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COVID-19: ‘dramatic’ surge in out-of-hospital cardiac arrests in NYC
The COVID-19 pandemic in New York City led to a surge in out-of-hospital cardiac arrests (OHCAs) that placed a huge burden on first responders, a new analysis shows.
During the height of the pandemic in New York, there was a “dramatic increase in cardiopulmonary arrests, nearly all presented in non-shockable cardiac rhythms (> 90% fatality rate) and vulnerable patient populations were most affected,” David J. Prezant, MD, chief medical officer, Fire Department of New York (FDNY), said in an interview.
In a news release, Dr. Prezant noted that “relatively few, if any, patients were tested to confirm the presence of COVID-19,” making it impossible to distinguish between cardiac arrests as a result of COVID-19 and those that may have resulted from other health conditions.
“We also can’t rule out the possibility that some people may have died from delays in seeking or receiving treatment for non–COVID-19-related conditions. However, the dramatic increase in cardiac arrests compared to the same period in 2019 strongly indicates that the pandemic was directly or indirectly responsible for that surge in cardiac arrests and deaths,” said Dr. Prezant.
The study was published online June 19 in JAMA Cardiology.
New York City has the largest and busiest EMS system in the United States, serving a population of more than 8.4 million people and responding to more than 1.5 million calls every year.
To gauge the impact of COVID-19 on first responders, Dr. Prezant and colleagues analyzed data for adults with OHCA who received EMS resuscitation from March 1, when the first case of COVID-19 was diagnosed in the city, through April 25, when EMS call volume had receded to pre-COVID-19 levels.
Compared with the same period in 2019, the COVID-19 period had an excess of 2,653 patients with OHCA who underwent EMS resuscitation attempts (3,989 in 2020 vs. 1,336 in 2019, P < .001), an incidence rate triple that of 2019 (47.5 vs. 15.9 per 100,000).
On the worst day – Monday, April 6 – OHCAs peaked at 305 cases, an increase of nearly 10-fold compared with the same day in 2019.
Despite the surge in cases, the median response time of available EMS units to OHCAs increased by about 1 minute over 2019, a nonsignificant difference. Although the average time varied, median response time during the COVID-19 period was less than 3 minutes.
A more vulnerable group
Compared with 2019, patients suffering OHCA during the pandemic period were older (mean age 72 vs. 68 years), less likely to be white (20% white vs. 33%) and more likely to have hypertension (54% vs. 46%), diabetes (36% vs. 26%), physical limitations (57% vs. 48%) and cardiac rhythms that don’t respond to defibrillator shocks (92% vs. 81%).
Compared with 2019, the COVID-19 period had substantial reductions in return of spontaneous circulation (ROSC) (18% vs. 35%; P < .001) and sustained ROSC (11% vs. 25%; P < .001). The case fatality rate was 90% in the COVID-19 period vs. 75% a year earlier.
“The tragedy of the COVID-19 pandemic is not just the number of patients infected, but the large increase in OHCAs and deaths,” Dr. Prezant and colleagues said.
Identifying patients with the greatest risk for OHCA and death during the COVID-19 pandemic “should allow for early, targeted interventions in the outpatient setting that could lead to reductions in out-of-hospital deaths,” they noted.
“Vulnerable patient populations need outreach, telephonic medicine, televideo medicine, home visits, not just temperature monitoring but home O2 saturation monitoring,” Dr. Prezant said in an interview. “Barriers need to be removed, not just for this pandemic but for the future – no matter what the trigger is.”
Unsung heroes
In an Editor’s Note in JAMA Cardiology, Robert O. Bonow, MD, Northwestern University, Chicago, and colleagues said the American people owe a debt of gratitude to first responders for their “heroic work” triaging, resuscitating, and transporting thousands of people affected by COVID-19.
“Although the typically bustling NYC streets remained eerily deserted, the characteristic cacophony of sounds of the ‘City that Never Sleeps’ was replaced by sirens wailing all hours of the night,” they wrote.
First responders to OHCAs in the COVID-19 era place themselves at extremely high risk, in some cases without optimal personal protective equipment, they pointed out. “Sadly,” many first responders have fallen ill to COVID-19 infection, they added.
As of June 1, 29 EMS workers and volunteers across the United States had died of COVID-19.
They are James Villecco, Gregory Hodge, Tony Thomas, Mike Field, John Redd, Idris Bey, Richard Seaberry, and Sal Mancuso of New York; Israel Tolentino, Reuven Maroth, Liana Sá, Kevin Leiva, Frank Molinari, Robert Weber, Robert Tarrant, Solomon Donald, Scott Geiger, John Farrarella, John Careccia, Bill Nauta, and David Pinto of New Jersey; Kevin Bundy, Robert Zerman, and Jeremy Emerich of Pennsylvania; Paul Cary of Colorado; Paul Novicki of Michigan; David Martin of Mississippi; Billy Birmingham of Missouri; and John “JP” Granger of South Carolina.
“We offer their families, friends, and colleagues our sincerest condolences and honor their memory with our highest respect and gratitude,” Dr. Bonow and colleagues wrote.
This study was supported by the City of New York and the Fire Department of the City of New York. The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
The COVID-19 pandemic in New York City led to a surge in out-of-hospital cardiac arrests (OHCAs) that placed a huge burden on first responders, a new analysis shows.
During the height of the pandemic in New York, there was a “dramatic increase in cardiopulmonary arrests, nearly all presented in non-shockable cardiac rhythms (> 90% fatality rate) and vulnerable patient populations were most affected,” David J. Prezant, MD, chief medical officer, Fire Department of New York (FDNY), said in an interview.
In a news release, Dr. Prezant noted that “relatively few, if any, patients were tested to confirm the presence of COVID-19,” making it impossible to distinguish between cardiac arrests as a result of COVID-19 and those that may have resulted from other health conditions.
“We also can’t rule out the possibility that some people may have died from delays in seeking or receiving treatment for non–COVID-19-related conditions. However, the dramatic increase in cardiac arrests compared to the same period in 2019 strongly indicates that the pandemic was directly or indirectly responsible for that surge in cardiac arrests and deaths,” said Dr. Prezant.
The study was published online June 19 in JAMA Cardiology.
New York City has the largest and busiest EMS system in the United States, serving a population of more than 8.4 million people and responding to more than 1.5 million calls every year.
To gauge the impact of COVID-19 on first responders, Dr. Prezant and colleagues analyzed data for adults with OHCA who received EMS resuscitation from March 1, when the first case of COVID-19 was diagnosed in the city, through April 25, when EMS call volume had receded to pre-COVID-19 levels.
Compared with the same period in 2019, the COVID-19 period had an excess of 2,653 patients with OHCA who underwent EMS resuscitation attempts (3,989 in 2020 vs. 1,336 in 2019, P < .001), an incidence rate triple that of 2019 (47.5 vs. 15.9 per 100,000).
On the worst day – Monday, April 6 – OHCAs peaked at 305 cases, an increase of nearly 10-fold compared with the same day in 2019.
Despite the surge in cases, the median response time of available EMS units to OHCAs increased by about 1 minute over 2019, a nonsignificant difference. Although the average time varied, median response time during the COVID-19 period was less than 3 minutes.
A more vulnerable group
Compared with 2019, patients suffering OHCA during the pandemic period were older (mean age 72 vs. 68 years), less likely to be white (20% white vs. 33%) and more likely to have hypertension (54% vs. 46%), diabetes (36% vs. 26%), physical limitations (57% vs. 48%) and cardiac rhythms that don’t respond to defibrillator shocks (92% vs. 81%).
Compared with 2019, the COVID-19 period had substantial reductions in return of spontaneous circulation (ROSC) (18% vs. 35%; P < .001) and sustained ROSC (11% vs. 25%; P < .001). The case fatality rate was 90% in the COVID-19 period vs. 75% a year earlier.
“The tragedy of the COVID-19 pandemic is not just the number of patients infected, but the large increase in OHCAs and deaths,” Dr. Prezant and colleagues said.
Identifying patients with the greatest risk for OHCA and death during the COVID-19 pandemic “should allow for early, targeted interventions in the outpatient setting that could lead to reductions in out-of-hospital deaths,” they noted.
“Vulnerable patient populations need outreach, telephonic medicine, televideo medicine, home visits, not just temperature monitoring but home O2 saturation monitoring,” Dr. Prezant said in an interview. “Barriers need to be removed, not just for this pandemic but for the future – no matter what the trigger is.”
Unsung heroes
In an Editor’s Note in JAMA Cardiology, Robert O. Bonow, MD, Northwestern University, Chicago, and colleagues said the American people owe a debt of gratitude to first responders for their “heroic work” triaging, resuscitating, and transporting thousands of people affected by COVID-19.
“Although the typically bustling NYC streets remained eerily deserted, the characteristic cacophony of sounds of the ‘City that Never Sleeps’ was replaced by sirens wailing all hours of the night,” they wrote.
First responders to OHCAs in the COVID-19 era place themselves at extremely high risk, in some cases without optimal personal protective equipment, they pointed out. “Sadly,” many first responders have fallen ill to COVID-19 infection, they added.
As of June 1, 29 EMS workers and volunteers across the United States had died of COVID-19.
They are James Villecco, Gregory Hodge, Tony Thomas, Mike Field, John Redd, Idris Bey, Richard Seaberry, and Sal Mancuso of New York; Israel Tolentino, Reuven Maroth, Liana Sá, Kevin Leiva, Frank Molinari, Robert Weber, Robert Tarrant, Solomon Donald, Scott Geiger, John Farrarella, John Careccia, Bill Nauta, and David Pinto of New Jersey; Kevin Bundy, Robert Zerman, and Jeremy Emerich of Pennsylvania; Paul Cary of Colorado; Paul Novicki of Michigan; David Martin of Mississippi; Billy Birmingham of Missouri; and John “JP” Granger of South Carolina.
“We offer their families, friends, and colleagues our sincerest condolences and honor their memory with our highest respect and gratitude,” Dr. Bonow and colleagues wrote.
This study was supported by the City of New York and the Fire Department of the City of New York. The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
The COVID-19 pandemic in New York City led to a surge in out-of-hospital cardiac arrests (OHCAs) that placed a huge burden on first responders, a new analysis shows.
During the height of the pandemic in New York, there was a “dramatic increase in cardiopulmonary arrests, nearly all presented in non-shockable cardiac rhythms (> 90% fatality rate) and vulnerable patient populations were most affected,” David J. Prezant, MD, chief medical officer, Fire Department of New York (FDNY), said in an interview.
In a news release, Dr. Prezant noted that “relatively few, if any, patients were tested to confirm the presence of COVID-19,” making it impossible to distinguish between cardiac arrests as a result of COVID-19 and those that may have resulted from other health conditions.
“We also can’t rule out the possibility that some people may have died from delays in seeking or receiving treatment for non–COVID-19-related conditions. However, the dramatic increase in cardiac arrests compared to the same period in 2019 strongly indicates that the pandemic was directly or indirectly responsible for that surge in cardiac arrests and deaths,” said Dr. Prezant.
The study was published online June 19 in JAMA Cardiology.
New York City has the largest and busiest EMS system in the United States, serving a population of more than 8.4 million people and responding to more than 1.5 million calls every year.
To gauge the impact of COVID-19 on first responders, Dr. Prezant and colleagues analyzed data for adults with OHCA who received EMS resuscitation from March 1, when the first case of COVID-19 was diagnosed in the city, through April 25, when EMS call volume had receded to pre-COVID-19 levels.
Compared with the same period in 2019, the COVID-19 period had an excess of 2,653 patients with OHCA who underwent EMS resuscitation attempts (3,989 in 2020 vs. 1,336 in 2019, P < .001), an incidence rate triple that of 2019 (47.5 vs. 15.9 per 100,000).
On the worst day – Monday, April 6 – OHCAs peaked at 305 cases, an increase of nearly 10-fold compared with the same day in 2019.
Despite the surge in cases, the median response time of available EMS units to OHCAs increased by about 1 minute over 2019, a nonsignificant difference. Although the average time varied, median response time during the COVID-19 period was less than 3 minutes.
A more vulnerable group
Compared with 2019, patients suffering OHCA during the pandemic period were older (mean age 72 vs. 68 years), less likely to be white (20% white vs. 33%) and more likely to have hypertension (54% vs. 46%), diabetes (36% vs. 26%), physical limitations (57% vs. 48%) and cardiac rhythms that don’t respond to defibrillator shocks (92% vs. 81%).
Compared with 2019, the COVID-19 period had substantial reductions in return of spontaneous circulation (ROSC) (18% vs. 35%; P < .001) and sustained ROSC (11% vs. 25%; P < .001). The case fatality rate was 90% in the COVID-19 period vs. 75% a year earlier.
“The tragedy of the COVID-19 pandemic is not just the number of patients infected, but the large increase in OHCAs and deaths,” Dr. Prezant and colleagues said.
Identifying patients with the greatest risk for OHCA and death during the COVID-19 pandemic “should allow for early, targeted interventions in the outpatient setting that could lead to reductions in out-of-hospital deaths,” they noted.
“Vulnerable patient populations need outreach, telephonic medicine, televideo medicine, home visits, not just temperature monitoring but home O2 saturation monitoring,” Dr. Prezant said in an interview. “Barriers need to be removed, not just for this pandemic but for the future – no matter what the trigger is.”
Unsung heroes
In an Editor’s Note in JAMA Cardiology, Robert O. Bonow, MD, Northwestern University, Chicago, and colleagues said the American people owe a debt of gratitude to first responders for their “heroic work” triaging, resuscitating, and transporting thousands of people affected by COVID-19.
“Although the typically bustling NYC streets remained eerily deserted, the characteristic cacophony of sounds of the ‘City that Never Sleeps’ was replaced by sirens wailing all hours of the night,” they wrote.
First responders to OHCAs in the COVID-19 era place themselves at extremely high risk, in some cases without optimal personal protective equipment, they pointed out. “Sadly,” many first responders have fallen ill to COVID-19 infection, they added.
As of June 1, 29 EMS workers and volunteers across the United States had died of COVID-19.
They are James Villecco, Gregory Hodge, Tony Thomas, Mike Field, John Redd, Idris Bey, Richard Seaberry, and Sal Mancuso of New York; Israel Tolentino, Reuven Maroth, Liana Sá, Kevin Leiva, Frank Molinari, Robert Weber, Robert Tarrant, Solomon Donald, Scott Geiger, John Farrarella, John Careccia, Bill Nauta, and David Pinto of New Jersey; Kevin Bundy, Robert Zerman, and Jeremy Emerich of Pennsylvania; Paul Cary of Colorado; Paul Novicki of Michigan; David Martin of Mississippi; Billy Birmingham of Missouri; and John “JP” Granger of South Carolina.
“We offer their families, friends, and colleagues our sincerest condolences and honor their memory with our highest respect and gratitude,” Dr. Bonow and colleagues wrote.
This study was supported by the City of New York and the Fire Department of the City of New York. The authors have disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
LAA Closure noninferior to DOACs to prevent AF-related events
Left atrial appendage closure was noninferior to use of direct oral anticoagulants for the prevention of atrial fibrillation (AFib)–related events in high-risk patients, based on data from 402 adults.
Given the limitations of vitamin K antagonists for preventing stroke in AFib, “a novel site-specific therapeutic alternative, mechanical left atrial appendage occlusion [LAAO], entered clinical practice,” but has not been compared with current safe and effective oral anticoagulants, wrote Pavel Osmancik, MD, of University Hospital Kralovske Vinohrady, Prague, and colleagues.
In a study published in the Journal of the American College of Cardiology, the researchers randomized 201 moderate- or high-risk adults with nonvalvular AFib to LAAO and another 201 to direct oral anticoagulants (DOAC).
Patients in the LAAO group underwent transesophageal echocardiography to exclude left atrial thrombi and underwent implantation with Boston Scientific’s Watchman, Watchman-FLX, or Abbott’s Amulet devices. Patients in the DOAC group received rivaroxaban, apixaban, or dabigatran at the manufacturer-recommended dose.
The primary outcome was a composite of complications related to procedures or devices, thromboembolic events (including stroke), and clinically significant bleeding. After an average of 20 months follow-up, 35 patients in the LAAO group and 41 in the DOAC group met the primary outcome (11% per 100 patient-years vs. 13% per 100 patient-years).
In addition, no differences appeared between the groups for the endpoint components of all-stroke/transient ischemic attack event (subdistribution hazard ratio, 1.00), clinically significantly bleeding (sHR, 0.81), or cardiovascular death (sHR, 0.75).
Nine patients experienced major complications related to LAAO, including clinically significant bleeding (sHR, 0.81; 95% CI, 0.44-1.52) and cardiovascular death (sHR, 0.75; 95% CI, 0.34-1.62). Major LAAO-related complications occurred in nine (4.5%) patients, with a short-term (up to 7 days or hospital discharge) complication rate of 2.1% and a 2.7% late complication rate. The late complications included three pericardial effusions, one of which resulted in death, the researchers wrote.
The study findings were limited by several factors, including the inability to assess the differences among the components of the composite primary endpoint. For example, “Regarding the primary endpoint, stroke reduction may be more important than bleeding reduction,” the investigators wrote.
The results were strengthened, however, by the enrollment of a high-risk AF population and is the first known randomized trial to compare percutaneous LAAO and DOACs for stroke prevention in this group. But the late complication rate of 2.7% is “suboptimal” and safety issues reinforce the need for refinement of operator technique and device technology with LAAO, they concluded.
‘Important step forward,’ with caveats
“How LAAO might stack up against DOAC therapy has remained an open question: Compared with warfarin, DOACs are easier to use and are associated with a reduction in mortality, driven by a substantially lower risk of intracranial hemorrhage and fatal bleeding,” wrote Matthew J. Price, MD, of the Scripps Clinic in La Jolla, Calif., and Jacqueline Saw, MD, of Vancouver General Hospital, in an accompanying editorial.
Previous studies of LAAO have shown a reduced risk of gastrointestinal bleeding, but procedure hazards interfered with long-term benefits, they said. The current study findings of similar rates of stroke and lower bleeding rates with LAAO, compared with DOAC, “are provocative given the clinical consensus that DOACs are safer, well tolerated, and generally better than warfarin, which was an easy target for transcatheter LAAO, given warfarin’s extensive limitations,” the editorialists wrote. Although the findings lend support to the use of LAAO, clinicians should consider several caveats such as the inclusion of patients who were “not optimal candidates for long-term OAC but were selected because they were at high risk for bleeding or because OAC treatment had already failed.”
However, “despite its imperfections, PRAGUE-17 is an important step forward and reinforces the role of transcatheter LAAO as a stroke-prevention strategy for patients with [AFib] at high risk of bleeding or medical treatment failure, even in the modern era of the DOACs,” they concluded. “Going forward, successful enrollment in ongoing and planned clinical trials while avoiding off-label procedures will be critical to define the appropriate use of transcatheter LAAO in expanded patient populations.”
The study was supported by the Ministry of Health of the Czech Republic. Dr. Osmancik disclosed speaking honoraria from Bayer and Abbot. Dr. Price’s financial disclosures included honoraria, speaker bureau fees, and/or research grants from Abbott Vascular, AstraZeneca, Boston Scientific, Chiesi USA, Daiichi Sankyo, and Medtronic. Dr. Saw disclosed receiving unrestricted research grant support several Canadian research institutes and fees and honoraria from AstraZeneca, Abbott Vascular, Boston Scientific, and Servier, among other drug companies.
SOURCES: Osmancik P et al. J Am Coll Cardiol. 2020;75:3122-35; Price MJ, Saw J. J Am Coll Cardiol. 2020;75:3136-9.
Left atrial appendage closure was noninferior to use of direct oral anticoagulants for the prevention of atrial fibrillation (AFib)–related events in high-risk patients, based on data from 402 adults.
Given the limitations of vitamin K antagonists for preventing stroke in AFib, “a novel site-specific therapeutic alternative, mechanical left atrial appendage occlusion [LAAO], entered clinical practice,” but has not been compared with current safe and effective oral anticoagulants, wrote Pavel Osmancik, MD, of University Hospital Kralovske Vinohrady, Prague, and colleagues.
In a study published in the Journal of the American College of Cardiology, the researchers randomized 201 moderate- or high-risk adults with nonvalvular AFib to LAAO and another 201 to direct oral anticoagulants (DOAC).
Patients in the LAAO group underwent transesophageal echocardiography to exclude left atrial thrombi and underwent implantation with Boston Scientific’s Watchman, Watchman-FLX, or Abbott’s Amulet devices. Patients in the DOAC group received rivaroxaban, apixaban, or dabigatran at the manufacturer-recommended dose.
The primary outcome was a composite of complications related to procedures or devices, thromboembolic events (including stroke), and clinically significant bleeding. After an average of 20 months follow-up, 35 patients in the LAAO group and 41 in the DOAC group met the primary outcome (11% per 100 patient-years vs. 13% per 100 patient-years).
In addition, no differences appeared between the groups for the endpoint components of all-stroke/transient ischemic attack event (subdistribution hazard ratio, 1.00), clinically significantly bleeding (sHR, 0.81), or cardiovascular death (sHR, 0.75).
Nine patients experienced major complications related to LAAO, including clinically significant bleeding (sHR, 0.81; 95% CI, 0.44-1.52) and cardiovascular death (sHR, 0.75; 95% CI, 0.34-1.62). Major LAAO-related complications occurred in nine (4.5%) patients, with a short-term (up to 7 days or hospital discharge) complication rate of 2.1% and a 2.7% late complication rate. The late complications included three pericardial effusions, one of which resulted in death, the researchers wrote.
The study findings were limited by several factors, including the inability to assess the differences among the components of the composite primary endpoint. For example, “Regarding the primary endpoint, stroke reduction may be more important than bleeding reduction,” the investigators wrote.
The results were strengthened, however, by the enrollment of a high-risk AF population and is the first known randomized trial to compare percutaneous LAAO and DOACs for stroke prevention in this group. But the late complication rate of 2.7% is “suboptimal” and safety issues reinforce the need for refinement of operator technique and device technology with LAAO, they concluded.
‘Important step forward,’ with caveats
“How LAAO might stack up against DOAC therapy has remained an open question: Compared with warfarin, DOACs are easier to use and are associated with a reduction in mortality, driven by a substantially lower risk of intracranial hemorrhage and fatal bleeding,” wrote Matthew J. Price, MD, of the Scripps Clinic in La Jolla, Calif., and Jacqueline Saw, MD, of Vancouver General Hospital, in an accompanying editorial.
Previous studies of LAAO have shown a reduced risk of gastrointestinal bleeding, but procedure hazards interfered with long-term benefits, they said. The current study findings of similar rates of stroke and lower bleeding rates with LAAO, compared with DOAC, “are provocative given the clinical consensus that DOACs are safer, well tolerated, and generally better than warfarin, which was an easy target for transcatheter LAAO, given warfarin’s extensive limitations,” the editorialists wrote. Although the findings lend support to the use of LAAO, clinicians should consider several caveats such as the inclusion of patients who were “not optimal candidates for long-term OAC but were selected because they were at high risk for bleeding or because OAC treatment had already failed.”
However, “despite its imperfections, PRAGUE-17 is an important step forward and reinforces the role of transcatheter LAAO as a stroke-prevention strategy for patients with [AFib] at high risk of bleeding or medical treatment failure, even in the modern era of the DOACs,” they concluded. “Going forward, successful enrollment in ongoing and planned clinical trials while avoiding off-label procedures will be critical to define the appropriate use of transcatheter LAAO in expanded patient populations.”
The study was supported by the Ministry of Health of the Czech Republic. Dr. Osmancik disclosed speaking honoraria from Bayer and Abbot. Dr. Price’s financial disclosures included honoraria, speaker bureau fees, and/or research grants from Abbott Vascular, AstraZeneca, Boston Scientific, Chiesi USA, Daiichi Sankyo, and Medtronic. Dr. Saw disclosed receiving unrestricted research grant support several Canadian research institutes and fees and honoraria from AstraZeneca, Abbott Vascular, Boston Scientific, and Servier, among other drug companies.
SOURCES: Osmancik P et al. J Am Coll Cardiol. 2020;75:3122-35; Price MJ, Saw J. J Am Coll Cardiol. 2020;75:3136-9.
Left atrial appendage closure was noninferior to use of direct oral anticoagulants for the prevention of atrial fibrillation (AFib)–related events in high-risk patients, based on data from 402 adults.
Given the limitations of vitamin K antagonists for preventing stroke in AFib, “a novel site-specific therapeutic alternative, mechanical left atrial appendage occlusion [LAAO], entered clinical practice,” but has not been compared with current safe and effective oral anticoagulants, wrote Pavel Osmancik, MD, of University Hospital Kralovske Vinohrady, Prague, and colleagues.
In a study published in the Journal of the American College of Cardiology, the researchers randomized 201 moderate- or high-risk adults with nonvalvular AFib to LAAO and another 201 to direct oral anticoagulants (DOAC).
Patients in the LAAO group underwent transesophageal echocardiography to exclude left atrial thrombi and underwent implantation with Boston Scientific’s Watchman, Watchman-FLX, or Abbott’s Amulet devices. Patients in the DOAC group received rivaroxaban, apixaban, or dabigatran at the manufacturer-recommended dose.
The primary outcome was a composite of complications related to procedures or devices, thromboembolic events (including stroke), and clinically significant bleeding. After an average of 20 months follow-up, 35 patients in the LAAO group and 41 in the DOAC group met the primary outcome (11% per 100 patient-years vs. 13% per 100 patient-years).
In addition, no differences appeared between the groups for the endpoint components of all-stroke/transient ischemic attack event (subdistribution hazard ratio, 1.00), clinically significantly bleeding (sHR, 0.81), or cardiovascular death (sHR, 0.75).
Nine patients experienced major complications related to LAAO, including clinically significant bleeding (sHR, 0.81; 95% CI, 0.44-1.52) and cardiovascular death (sHR, 0.75; 95% CI, 0.34-1.62). Major LAAO-related complications occurred in nine (4.5%) patients, with a short-term (up to 7 days or hospital discharge) complication rate of 2.1% and a 2.7% late complication rate. The late complications included three pericardial effusions, one of which resulted in death, the researchers wrote.
The study findings were limited by several factors, including the inability to assess the differences among the components of the composite primary endpoint. For example, “Regarding the primary endpoint, stroke reduction may be more important than bleeding reduction,” the investigators wrote.
The results were strengthened, however, by the enrollment of a high-risk AF population and is the first known randomized trial to compare percutaneous LAAO and DOACs for stroke prevention in this group. But the late complication rate of 2.7% is “suboptimal” and safety issues reinforce the need for refinement of operator technique and device technology with LAAO, they concluded.
‘Important step forward,’ with caveats
“How LAAO might stack up against DOAC therapy has remained an open question: Compared with warfarin, DOACs are easier to use and are associated with a reduction in mortality, driven by a substantially lower risk of intracranial hemorrhage and fatal bleeding,” wrote Matthew J. Price, MD, of the Scripps Clinic in La Jolla, Calif., and Jacqueline Saw, MD, of Vancouver General Hospital, in an accompanying editorial.
Previous studies of LAAO have shown a reduced risk of gastrointestinal bleeding, but procedure hazards interfered with long-term benefits, they said. The current study findings of similar rates of stroke and lower bleeding rates with LAAO, compared with DOAC, “are provocative given the clinical consensus that DOACs are safer, well tolerated, and generally better than warfarin, which was an easy target for transcatheter LAAO, given warfarin’s extensive limitations,” the editorialists wrote. Although the findings lend support to the use of LAAO, clinicians should consider several caveats such as the inclusion of patients who were “not optimal candidates for long-term OAC but were selected because they were at high risk for bleeding or because OAC treatment had already failed.”
However, “despite its imperfections, PRAGUE-17 is an important step forward and reinforces the role of transcatheter LAAO as a stroke-prevention strategy for patients with [AFib] at high risk of bleeding or medical treatment failure, even in the modern era of the DOACs,” they concluded. “Going forward, successful enrollment in ongoing and planned clinical trials while avoiding off-label procedures will be critical to define the appropriate use of transcatheter LAAO in expanded patient populations.”
The study was supported by the Ministry of Health of the Czech Republic. Dr. Osmancik disclosed speaking honoraria from Bayer and Abbot. Dr. Price’s financial disclosures included honoraria, speaker bureau fees, and/or research grants from Abbott Vascular, AstraZeneca, Boston Scientific, Chiesi USA, Daiichi Sankyo, and Medtronic. Dr. Saw disclosed receiving unrestricted research grant support several Canadian research institutes and fees and honoraria from AstraZeneca, Abbott Vascular, Boston Scientific, and Servier, among other drug companies.
SOURCES: Osmancik P et al. J Am Coll Cardiol. 2020;75:3122-35; Price MJ, Saw J. J Am Coll Cardiol. 2020;75:3136-9.
FROM THE JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
Key clinical point:
Major finding: A composite primary outcome including stroke and death was not significantly different in high-risk patients randomized to left atrial appendage occlusion or direct oral anticoagulants at roughly 20 months’ follow-up (11% vs. 13%, respectively).
Study details: The data come from the PRAGUE-17 study, a randomized trial of 402 adults at increased risk for atrial fibrillation.
Disclosures: The study was supported by the Ministry of Health of the Czech Republic. Dr. Osmancik disclosed speaking honoraria from Bayer and Abbot.
Sources: Osmancik P et al. J Am Coll Cardiol. 2020;75:3122-35; Price MJ, Saw J. J Am Coll Cardiol. 2020;75:3136-9.
Preventing arrhythmias and QTc prolongation in COVID-19 patients on psychotropics
Over the last few weeks, several conflicting reports about the efficacy of SARS-CoV-2 treatments have emerged, including high-profile papers that were placed in the limelight and groundbreaking retractions that were issued by the Lancet and New England Journal of Medicine, involving the potential dangers of COVID therapy with findings derived from the Surgisphere database. Hydroxychloroquine has garnered considerable media attention and was touted earlier by President Trump for its therapeutic effects.1 Naturally, there are political connotations associated with the agent, and it is unlikely that hydroxychloroquine will be supplanted in the near future as ongoing clinical trials have demonstrated mixed results amid the controversy.
As clinicians navigating unchartered territory within the hospital setting, we have to come to terms with these new challenges, tailoring treatment protocols accordingly with the best clinical practices in mind. Patients with preexisting mental health conditions and who are being treated for COVID-19 are particularly susceptible to clinical deterioration. Recent studies have indicated that psychiatric patients are more prone to feelings of isolation and/or estrangement as well as exacerbation of symptoms such as paranoia.2 Even more concerning is the medication regimen, namely, the novel combination therapies that arise when agents such as hydroxychloroquine are used in tandem with certain antipsychotics or antidepressants.
What’s at stake for COVID-19–positive mental health care patients?
Although the efficacy of hydroxychloroquine is currently being investigated,3 the antimalarial is usually prescribed in tandem with azithromycin for people with COVID-19. The National Institute of Allergy and Infectious Diseases has advised against that particular combination therapy because of ongoing concerns about toxicities.3,4
In another study, azithromycin was effectively substituted with doxycycline to help minimize systemic effects for patients with cardiac and/or pulmonary issues.5 Azithromycin is notorious in the literature for influencing the electrical activity of the heart with the potential for fatal arrhythmia and sudden cardiac death in individuals at risk for cardiovascular disease.5,6,7 It should be noted that both of these commonly prescribed COVID-19 medications (for example, hydroxychloroquine and azithromycin) could lead to QT interval prolongation especially within the context of combination therapy. This is largely concerning for psychiatrists and various other mental health practitioners for the following reasons: (1) higher rates of metabolic syndrome and cardiovascular diseases among psychiatric patients8 and/or (2) effects of certain antipsychotics (for example, IV haloperidol, thioridazine, and ziprasidone) and antidepressants (for example, citalopram and escitalopram) on the QT interval.9
SARS-CoV-2 and clinical judgment: Evaluating patients at higher risk
Although COVID-19 medication guidelines are still being actively developed, hydroxychloroquine appears to be commonly prescribed by physicians. The medication is known myriad untoward effects, including potential behavioral dysfunction (for example, irritability, agitation, suicidal ideation)10 as well as the aforementioned issues concerning arrhythmia (for example, torsades de pointes). Health care professionals might not have much control over the choice of COVID-19 agents because of a lack of available resources or limited options, but they can exercise clinical judgment with respect to selecting the appropriate psychotropic medications.
Treatment recommendations
1. Establish a baseline EKG
A baseline 12-lead EKG is the standard of care for patients currently being screened for COVID-19. It is necessary to rule out the presence of an underlying cardiovascular disease or a rhythm irregularity. A prolonged QTc interval is generally regarded as being around greater than 450-470 msecs with variations attributable to gender;11 numerous studies have affirmed that the risk of acquiring torsades de pointes is substantial when the QTc interval exceeds 500 msecs.12
2. Medical management and risk assessment
Commonly prescribed antipsychotics such as IV haloperidol and ziprasidone are known for exerting a negative effect on the interval and should readily be substituted with other agents in patients who are being treated for COVID-19; the combination of these antipsychotics alongside some COVID-19 medication regimens (for example, hydroxychloroquine/azithromycin) might prove to be fatal. The same logic applies to COVID-19 patients previously on antidepressant therapeutics such as citalopram and escitalopram.
3. Embrace an individually tailored approach to therapeutics
While American Psychiatric Association guidelines historically supported a cessation or reduction in the offending agent under normal circumstances,12 our team is recommending that the psychotropics associated with QTc interval prolongation are discontinued altogether (or substituted with a low-risk agent) in the event that a patient presents with suspected COVID-19. However, after the patients tests negative with COVID-19, they may resume therapy as indicated under the discretion of the mental health practitioner.
References
1. Offard C. “Lancet, NEJM Retract Surgisphere Studies on COVID-19 Patients.” The Scientist Magazine. 2020 Jun 4.
2. Shigemura J et al. Psychiatry Clin Neurosci. 2020 Apr;74(4):281-2.
3. Keshtkar-Jahromi M and Bavari S. Am J Trop Med Hyg. 2020 May;102(5):932-3.
4. Palca J. “NIH panel recommends against drug combination promoted by Trump for COVID-19.” NPR. 2020 Apr 21.
5. Mongelli L. “Long Island doctor tries new twist on hydroxychloroquine for elderly COVID-19 patients.” New York Post. 2020 Apr 4.
6. Hancox JC et al. Ther Adv Infect Dis. 2013 Oct;(5):155-65.
7. Giudicessi JR and Ackerman MJ. Cleve Clin J Med. 2013 Sep;80(9):539-44.
8. Casey DE. Am J Med. 2005 Apr 1;118(Suppl 2):15S-22S.
9. Beach SR et al. Psychosomatics. 2013 Jan 1;54(1):1-3.
10. Bogaczewicz A and Sobów T. Psychiatria i Psychologia Kliniczna. 2017;17(2):111-4.
11. Chohan PS et al. Pak J Med Sci. 2015 Sep-Oct;31(5):1269-71.
12. Lieberman JA et al. APA guidance on the use of antipsychotic drugs and cardiac sudden death. NYS Office of Mental Health. 2012.
Dr. Faisal A. Islam is medical adviser for the International Maternal and Child Health Foundation, Montreal, and is based in New York. He also is a postdoctoral fellow, psychopharmacologist, and a board-certified medical affairs specialist. Dr. Faisal Islam disclosed no relevant financial relationships.
Dr. Mohammed Islam is affiliated with the department of psychiatry at the Interfaith Medical Center, New York. He disclosed no relevant financial relationships.
Dr. Choudhry is the chief scientific officer and head of the department of mental health and clinical research at the International Maternal and Child Health Foundation. He disclosed no relevant financial relationships.
Over the last few weeks, several conflicting reports about the efficacy of SARS-CoV-2 treatments have emerged, including high-profile papers that were placed in the limelight and groundbreaking retractions that were issued by the Lancet and New England Journal of Medicine, involving the potential dangers of COVID therapy with findings derived from the Surgisphere database. Hydroxychloroquine has garnered considerable media attention and was touted earlier by President Trump for its therapeutic effects.1 Naturally, there are political connotations associated with the agent, and it is unlikely that hydroxychloroquine will be supplanted in the near future as ongoing clinical trials have demonstrated mixed results amid the controversy.
As clinicians navigating unchartered territory within the hospital setting, we have to come to terms with these new challenges, tailoring treatment protocols accordingly with the best clinical practices in mind. Patients with preexisting mental health conditions and who are being treated for COVID-19 are particularly susceptible to clinical deterioration. Recent studies have indicated that psychiatric patients are more prone to feelings of isolation and/or estrangement as well as exacerbation of symptoms such as paranoia.2 Even more concerning is the medication regimen, namely, the novel combination therapies that arise when agents such as hydroxychloroquine are used in tandem with certain antipsychotics or antidepressants.
What’s at stake for COVID-19–positive mental health care patients?
Although the efficacy of hydroxychloroquine is currently being investigated,3 the antimalarial is usually prescribed in tandem with azithromycin for people with COVID-19. The National Institute of Allergy and Infectious Diseases has advised against that particular combination therapy because of ongoing concerns about toxicities.3,4
In another study, azithromycin was effectively substituted with doxycycline to help minimize systemic effects for patients with cardiac and/or pulmonary issues.5 Azithromycin is notorious in the literature for influencing the electrical activity of the heart with the potential for fatal arrhythmia and sudden cardiac death in individuals at risk for cardiovascular disease.5,6,7 It should be noted that both of these commonly prescribed COVID-19 medications (for example, hydroxychloroquine and azithromycin) could lead to QT interval prolongation especially within the context of combination therapy. This is largely concerning for psychiatrists and various other mental health practitioners for the following reasons: (1) higher rates of metabolic syndrome and cardiovascular diseases among psychiatric patients8 and/or (2) effects of certain antipsychotics (for example, IV haloperidol, thioridazine, and ziprasidone) and antidepressants (for example, citalopram and escitalopram) on the QT interval.9
SARS-CoV-2 and clinical judgment: Evaluating patients at higher risk
Although COVID-19 medication guidelines are still being actively developed, hydroxychloroquine appears to be commonly prescribed by physicians. The medication is known myriad untoward effects, including potential behavioral dysfunction (for example, irritability, agitation, suicidal ideation)10 as well as the aforementioned issues concerning arrhythmia (for example, torsades de pointes). Health care professionals might not have much control over the choice of COVID-19 agents because of a lack of available resources or limited options, but they can exercise clinical judgment with respect to selecting the appropriate psychotropic medications.
Treatment recommendations
1. Establish a baseline EKG
A baseline 12-lead EKG is the standard of care for patients currently being screened for COVID-19. It is necessary to rule out the presence of an underlying cardiovascular disease or a rhythm irregularity. A prolonged QTc interval is generally regarded as being around greater than 450-470 msecs with variations attributable to gender;11 numerous studies have affirmed that the risk of acquiring torsades de pointes is substantial when the QTc interval exceeds 500 msecs.12
2. Medical management and risk assessment
Commonly prescribed antipsychotics such as IV haloperidol and ziprasidone are known for exerting a negative effect on the interval and should readily be substituted with other agents in patients who are being treated for COVID-19; the combination of these antipsychotics alongside some COVID-19 medication regimens (for example, hydroxychloroquine/azithromycin) might prove to be fatal. The same logic applies to COVID-19 patients previously on antidepressant therapeutics such as citalopram and escitalopram.
3. Embrace an individually tailored approach to therapeutics
While American Psychiatric Association guidelines historically supported a cessation or reduction in the offending agent under normal circumstances,12 our team is recommending that the psychotropics associated with QTc interval prolongation are discontinued altogether (or substituted with a low-risk agent) in the event that a patient presents with suspected COVID-19. However, after the patients tests negative with COVID-19, they may resume therapy as indicated under the discretion of the mental health practitioner.
References
1. Offard C. “Lancet, NEJM Retract Surgisphere Studies on COVID-19 Patients.” The Scientist Magazine. 2020 Jun 4.
2. Shigemura J et al. Psychiatry Clin Neurosci. 2020 Apr;74(4):281-2.
3. Keshtkar-Jahromi M and Bavari S. Am J Trop Med Hyg. 2020 May;102(5):932-3.
4. Palca J. “NIH panel recommends against drug combination promoted by Trump for COVID-19.” NPR. 2020 Apr 21.
5. Mongelli L. “Long Island doctor tries new twist on hydroxychloroquine for elderly COVID-19 patients.” New York Post. 2020 Apr 4.
6. Hancox JC et al. Ther Adv Infect Dis. 2013 Oct;(5):155-65.
7. Giudicessi JR and Ackerman MJ. Cleve Clin J Med. 2013 Sep;80(9):539-44.
8. Casey DE. Am J Med. 2005 Apr 1;118(Suppl 2):15S-22S.
9. Beach SR et al. Psychosomatics. 2013 Jan 1;54(1):1-3.
10. Bogaczewicz A and Sobów T. Psychiatria i Psychologia Kliniczna. 2017;17(2):111-4.
11. Chohan PS et al. Pak J Med Sci. 2015 Sep-Oct;31(5):1269-71.
12. Lieberman JA et al. APA guidance on the use of antipsychotic drugs and cardiac sudden death. NYS Office of Mental Health. 2012.
Dr. Faisal A. Islam is medical adviser for the International Maternal and Child Health Foundation, Montreal, and is based in New York. He also is a postdoctoral fellow, psychopharmacologist, and a board-certified medical affairs specialist. Dr. Faisal Islam disclosed no relevant financial relationships.
Dr. Mohammed Islam is affiliated with the department of psychiatry at the Interfaith Medical Center, New York. He disclosed no relevant financial relationships.
Dr. Choudhry is the chief scientific officer and head of the department of mental health and clinical research at the International Maternal and Child Health Foundation. He disclosed no relevant financial relationships.
Over the last few weeks, several conflicting reports about the efficacy of SARS-CoV-2 treatments have emerged, including high-profile papers that were placed in the limelight and groundbreaking retractions that were issued by the Lancet and New England Journal of Medicine, involving the potential dangers of COVID therapy with findings derived from the Surgisphere database. Hydroxychloroquine has garnered considerable media attention and was touted earlier by President Trump for its therapeutic effects.1 Naturally, there are political connotations associated with the agent, and it is unlikely that hydroxychloroquine will be supplanted in the near future as ongoing clinical trials have demonstrated mixed results amid the controversy.
As clinicians navigating unchartered territory within the hospital setting, we have to come to terms with these new challenges, tailoring treatment protocols accordingly with the best clinical practices in mind. Patients with preexisting mental health conditions and who are being treated for COVID-19 are particularly susceptible to clinical deterioration. Recent studies have indicated that psychiatric patients are more prone to feelings of isolation and/or estrangement as well as exacerbation of symptoms such as paranoia.2 Even more concerning is the medication regimen, namely, the novel combination therapies that arise when agents such as hydroxychloroquine are used in tandem with certain antipsychotics or antidepressants.
What’s at stake for COVID-19–positive mental health care patients?
Although the efficacy of hydroxychloroquine is currently being investigated,3 the antimalarial is usually prescribed in tandem with azithromycin for people with COVID-19. The National Institute of Allergy and Infectious Diseases has advised against that particular combination therapy because of ongoing concerns about toxicities.3,4
In another study, azithromycin was effectively substituted with doxycycline to help minimize systemic effects for patients with cardiac and/or pulmonary issues.5 Azithromycin is notorious in the literature for influencing the electrical activity of the heart with the potential for fatal arrhythmia and sudden cardiac death in individuals at risk for cardiovascular disease.5,6,7 It should be noted that both of these commonly prescribed COVID-19 medications (for example, hydroxychloroquine and azithromycin) could lead to QT interval prolongation especially within the context of combination therapy. This is largely concerning for psychiatrists and various other mental health practitioners for the following reasons: (1) higher rates of metabolic syndrome and cardiovascular diseases among psychiatric patients8 and/or (2) effects of certain antipsychotics (for example, IV haloperidol, thioridazine, and ziprasidone) and antidepressants (for example, citalopram and escitalopram) on the QT interval.9
SARS-CoV-2 and clinical judgment: Evaluating patients at higher risk
Although COVID-19 medication guidelines are still being actively developed, hydroxychloroquine appears to be commonly prescribed by physicians. The medication is known myriad untoward effects, including potential behavioral dysfunction (for example, irritability, agitation, suicidal ideation)10 as well as the aforementioned issues concerning arrhythmia (for example, torsades de pointes). Health care professionals might not have much control over the choice of COVID-19 agents because of a lack of available resources or limited options, but they can exercise clinical judgment with respect to selecting the appropriate psychotropic medications.
Treatment recommendations
1. Establish a baseline EKG
A baseline 12-lead EKG is the standard of care for patients currently being screened for COVID-19. It is necessary to rule out the presence of an underlying cardiovascular disease or a rhythm irregularity. A prolonged QTc interval is generally regarded as being around greater than 450-470 msecs with variations attributable to gender;11 numerous studies have affirmed that the risk of acquiring torsades de pointes is substantial when the QTc interval exceeds 500 msecs.12
2. Medical management and risk assessment
Commonly prescribed antipsychotics such as IV haloperidol and ziprasidone are known for exerting a negative effect on the interval and should readily be substituted with other agents in patients who are being treated for COVID-19; the combination of these antipsychotics alongside some COVID-19 medication regimens (for example, hydroxychloroquine/azithromycin) might prove to be fatal. The same logic applies to COVID-19 patients previously on antidepressant therapeutics such as citalopram and escitalopram.
3. Embrace an individually tailored approach to therapeutics
While American Psychiatric Association guidelines historically supported a cessation or reduction in the offending agent under normal circumstances,12 our team is recommending that the psychotropics associated with QTc interval prolongation are discontinued altogether (or substituted with a low-risk agent) in the event that a patient presents with suspected COVID-19. However, after the patients tests negative with COVID-19, they may resume therapy as indicated under the discretion of the mental health practitioner.
References
1. Offard C. “Lancet, NEJM Retract Surgisphere Studies on COVID-19 Patients.” The Scientist Magazine. 2020 Jun 4.
2. Shigemura J et al. Psychiatry Clin Neurosci. 2020 Apr;74(4):281-2.
3. Keshtkar-Jahromi M and Bavari S. Am J Trop Med Hyg. 2020 May;102(5):932-3.
4. Palca J. “NIH panel recommends against drug combination promoted by Trump for COVID-19.” NPR. 2020 Apr 21.
5. Mongelli L. “Long Island doctor tries new twist on hydroxychloroquine for elderly COVID-19 patients.” New York Post. 2020 Apr 4.
6. Hancox JC et al. Ther Adv Infect Dis. 2013 Oct;(5):155-65.
7. Giudicessi JR and Ackerman MJ. Cleve Clin J Med. 2013 Sep;80(9):539-44.
8. Casey DE. Am J Med. 2005 Apr 1;118(Suppl 2):15S-22S.
9. Beach SR et al. Psychosomatics. 2013 Jan 1;54(1):1-3.
10. Bogaczewicz A and Sobów T. Psychiatria i Psychologia Kliniczna. 2017;17(2):111-4.
11. Chohan PS et al. Pak J Med Sci. 2015 Sep-Oct;31(5):1269-71.
12. Lieberman JA et al. APA guidance on the use of antipsychotic drugs and cardiac sudden death. NYS Office of Mental Health. 2012.
Dr. Faisal A. Islam is medical adviser for the International Maternal and Child Health Foundation, Montreal, and is based in New York. He also is a postdoctoral fellow, psychopharmacologist, and a board-certified medical affairs specialist. Dr. Faisal Islam disclosed no relevant financial relationships.
Dr. Mohammed Islam is affiliated with the department of psychiatry at the Interfaith Medical Center, New York. He disclosed no relevant financial relationships.
Dr. Choudhry is the chief scientific officer and head of the department of mental health and clinical research at the International Maternal and Child Health Foundation. He disclosed no relevant financial relationships.
Smart phones boosted compliance for cardiac device data transmission
A phone, an app, and the next generation of implanted cardiac device data signaling produced an unprecedented level of data transmission compliance in a single-arm, multicenter, pilot study with 245 patients, adding momentum to the expanding penetration of personal smart devices into cardiac electrophysiology.
During 12-month follow-up, the 245 patients who received either a medically indicated pacemaker or cardiac resynchronization therapy (CRT)–pacemaker equipped with Bluetooth remote transmission capability had successful data transfer to their clinicians for 95% of their scheduled data uploads while using a personal phone or tablet as the link between their heart implant and the Internet. This rate significantly surpassed the transmission-success rates tallied by traditional, bedside transmitters in historical control groups, Khaldoun G. Tarakji, MD, said at the annual scientific sessions of the Heart Rhythm Society, held online because of COVID-19.
A related analysis by Dr. Tarakji and colleagues of 811 patients from real-world practice who received similar implanted cardiac devices with the same remote-transmission capability showed a 93% rate of successful data transfers via smart devices.
In contrast, historical performance showed a 77% success rate in matched patients drawn from a pool of more than 69,000 people in routine care who had received a pacemaker or CRT-pacemaker that automatically transmitted to a bedside monitor. Historical transmission success among matched patients from a pool of more than 128,000 routine-care patients with similar implants who used a wand to interrogate their implants before the attached monitor transmitted their data had a 56% rate of successful transmissions.
Cardiac device signals that flow directly into a patient’s phone or pad and then relay automatically via an app to the clinic “are clearly much easier,” than the methods now used, observed Dr. Tarakji, a cardiac electrophysiologist at the Cleveland Clinic. “It is truly as seamless as possible. Patients don’t really need to do anything,” he said during a press briefing. The key is that most patients tend to keep their smart devices, especially their phones, near them all the time, which minimizes the chance that the implanted cardiac device might try to file a report when the patient is not positioned near the device that’s facilitating transmission. When patients use conventional, bedside transmitters they can forget to bring them on trips, while many fewer fail to take their phone. Another advantage is that the link between a phone and a cardiac implant can be started in the clinic once the patient downloads an app. Bedside units need home setup, and “some patients never even get theirs out of the box,” Dr. Tarakji lamented.
Another feature of handheld device transmissions that run off an app is that the app can display clinical metrics, activity, device performance, and transmission history, as well as educational information. All of these features can enhance patient engagement with their implanted device, their arrhythmia, and their health status. Bedside units often give patients little feedback, and they don’t display clinical data. “The real challenge for clinicians is what data you let patients see. That’s complicated,” Dr. Tarakji said.
“This study was designed to see whether the technology works. The next step is to study how it affects risk-factor modification” or other outcomes. “There are many opportunities” to explore with this new data transmission and processing capability, he concluded.
The BlueSync Field Evaluation study enrolled patients at 20 centers in the United States, France, Italy, and the United Kingdom during 2018, and the 245 patients who received a BlueSync device and were included in the analysis sent at least one of their scheduled data transmissions during their 12 months of follow-up. Participants were eligible if they were willing to use their own smart phone or pad that could interact with their cardiac implant, and included both first-time implant recipients as well as some patients who received replacement units.
Personal device–based data transmission from cardiac implants “will no doubt change the way we manage patients,” commented Nassir F. Marrouche, MD, a cardiac electrophysiologist and professor of medicine at Tulane University in New Orleans, and a designated discussant for the report. “Every implanted cardiac device should be able to connect with a phone, which can improve adoption and adherence,” he said.
But the study has several limitations for interpreting the implications of the findings, starting with its limited size and single-arm design, noted a second discussant, Roderick Tung, MD, director of cardiac electrophysiology at the University of Chicago. Another issue is the generalizability of the findings, which are likely biased by involving only patients who own a smart phone or tablet and may be more likely to transmit their data regardless of the means. And comparing transmission success in a prospective study with rates that occurred during real-world, routine practice could have a Hawthorne effect bias, where people under study behave differently than they do in everyday life. But that effect may be mitigated by confirmatory findings from a real-world group that also used smart-device transmission included in the report. Despite these caveats, it’s valuable to develop new ways of improving data collection from cardiac devices, Dr. Tung said.
The BlueSync Field Evaluation study was sponsored by Medtronic, the company that markets Bluetooth-enabled cardiac devices. Dr. Tarakji has been a consultant to Medtronic, and also to AliveCor, Boston Scientific, and Johnson & Johnson. Dr. Marrouche has been a consultant to Medtronic as well as to Biosense Webster, Biotronik, Cardiac Design, and Preventice, and he has received research funding from Abbott, Biosense Webster, Boston Scientific, and GE Healthcare. Dr. Tung has been a speaker on behalf of Abbott, Boston Scientific, and Biosense Webster.
SOURCE: Tarakji KG. Heart Rhythm 2020, Abstract D-LBCT04-01.
A phone, an app, and the next generation of implanted cardiac device data signaling produced an unprecedented level of data transmission compliance in a single-arm, multicenter, pilot study with 245 patients, adding momentum to the expanding penetration of personal smart devices into cardiac electrophysiology.
During 12-month follow-up, the 245 patients who received either a medically indicated pacemaker or cardiac resynchronization therapy (CRT)–pacemaker equipped with Bluetooth remote transmission capability had successful data transfer to their clinicians for 95% of their scheduled data uploads while using a personal phone or tablet as the link between their heart implant and the Internet. This rate significantly surpassed the transmission-success rates tallied by traditional, bedside transmitters in historical control groups, Khaldoun G. Tarakji, MD, said at the annual scientific sessions of the Heart Rhythm Society, held online because of COVID-19.
A related analysis by Dr. Tarakji and colleagues of 811 patients from real-world practice who received similar implanted cardiac devices with the same remote-transmission capability showed a 93% rate of successful data transfers via smart devices.
In contrast, historical performance showed a 77% success rate in matched patients drawn from a pool of more than 69,000 people in routine care who had received a pacemaker or CRT-pacemaker that automatically transmitted to a bedside monitor. Historical transmission success among matched patients from a pool of more than 128,000 routine-care patients with similar implants who used a wand to interrogate their implants before the attached monitor transmitted their data had a 56% rate of successful transmissions.
Cardiac device signals that flow directly into a patient’s phone or pad and then relay automatically via an app to the clinic “are clearly much easier,” than the methods now used, observed Dr. Tarakji, a cardiac electrophysiologist at the Cleveland Clinic. “It is truly as seamless as possible. Patients don’t really need to do anything,” he said during a press briefing. The key is that most patients tend to keep their smart devices, especially their phones, near them all the time, which minimizes the chance that the implanted cardiac device might try to file a report when the patient is not positioned near the device that’s facilitating transmission. When patients use conventional, bedside transmitters they can forget to bring them on trips, while many fewer fail to take their phone. Another advantage is that the link between a phone and a cardiac implant can be started in the clinic once the patient downloads an app. Bedside units need home setup, and “some patients never even get theirs out of the box,” Dr. Tarakji lamented.
Another feature of handheld device transmissions that run off an app is that the app can display clinical metrics, activity, device performance, and transmission history, as well as educational information. All of these features can enhance patient engagement with their implanted device, their arrhythmia, and their health status. Bedside units often give patients little feedback, and they don’t display clinical data. “The real challenge for clinicians is what data you let patients see. That’s complicated,” Dr. Tarakji said.
“This study was designed to see whether the technology works. The next step is to study how it affects risk-factor modification” or other outcomes. “There are many opportunities” to explore with this new data transmission and processing capability, he concluded.
The BlueSync Field Evaluation study enrolled patients at 20 centers in the United States, France, Italy, and the United Kingdom during 2018, and the 245 patients who received a BlueSync device and were included in the analysis sent at least one of their scheduled data transmissions during their 12 months of follow-up. Participants were eligible if they were willing to use their own smart phone or pad that could interact with their cardiac implant, and included both first-time implant recipients as well as some patients who received replacement units.
Personal device–based data transmission from cardiac implants “will no doubt change the way we manage patients,” commented Nassir F. Marrouche, MD, a cardiac electrophysiologist and professor of medicine at Tulane University in New Orleans, and a designated discussant for the report. “Every implanted cardiac device should be able to connect with a phone, which can improve adoption and adherence,” he said.
But the study has several limitations for interpreting the implications of the findings, starting with its limited size and single-arm design, noted a second discussant, Roderick Tung, MD, director of cardiac electrophysiology at the University of Chicago. Another issue is the generalizability of the findings, which are likely biased by involving only patients who own a smart phone or tablet and may be more likely to transmit their data regardless of the means. And comparing transmission success in a prospective study with rates that occurred during real-world, routine practice could have a Hawthorne effect bias, where people under study behave differently than they do in everyday life. But that effect may be mitigated by confirmatory findings from a real-world group that also used smart-device transmission included in the report. Despite these caveats, it’s valuable to develop new ways of improving data collection from cardiac devices, Dr. Tung said.
The BlueSync Field Evaluation study was sponsored by Medtronic, the company that markets Bluetooth-enabled cardiac devices. Dr. Tarakji has been a consultant to Medtronic, and also to AliveCor, Boston Scientific, and Johnson & Johnson. Dr. Marrouche has been a consultant to Medtronic as well as to Biosense Webster, Biotronik, Cardiac Design, and Preventice, and he has received research funding from Abbott, Biosense Webster, Boston Scientific, and GE Healthcare. Dr. Tung has been a speaker on behalf of Abbott, Boston Scientific, and Biosense Webster.
SOURCE: Tarakji KG. Heart Rhythm 2020, Abstract D-LBCT04-01.
A phone, an app, and the next generation of implanted cardiac device data signaling produced an unprecedented level of data transmission compliance in a single-arm, multicenter, pilot study with 245 patients, adding momentum to the expanding penetration of personal smart devices into cardiac electrophysiology.
During 12-month follow-up, the 245 patients who received either a medically indicated pacemaker or cardiac resynchronization therapy (CRT)–pacemaker equipped with Bluetooth remote transmission capability had successful data transfer to their clinicians for 95% of their scheduled data uploads while using a personal phone or tablet as the link between their heart implant and the Internet. This rate significantly surpassed the transmission-success rates tallied by traditional, bedside transmitters in historical control groups, Khaldoun G. Tarakji, MD, said at the annual scientific sessions of the Heart Rhythm Society, held online because of COVID-19.
A related analysis by Dr. Tarakji and colleagues of 811 patients from real-world practice who received similar implanted cardiac devices with the same remote-transmission capability showed a 93% rate of successful data transfers via smart devices.
In contrast, historical performance showed a 77% success rate in matched patients drawn from a pool of more than 69,000 people in routine care who had received a pacemaker or CRT-pacemaker that automatically transmitted to a bedside monitor. Historical transmission success among matched patients from a pool of more than 128,000 routine-care patients with similar implants who used a wand to interrogate their implants before the attached monitor transmitted their data had a 56% rate of successful transmissions.
Cardiac device signals that flow directly into a patient’s phone or pad and then relay automatically via an app to the clinic “are clearly much easier,” than the methods now used, observed Dr. Tarakji, a cardiac electrophysiologist at the Cleveland Clinic. “It is truly as seamless as possible. Patients don’t really need to do anything,” he said during a press briefing. The key is that most patients tend to keep their smart devices, especially their phones, near them all the time, which minimizes the chance that the implanted cardiac device might try to file a report when the patient is not positioned near the device that’s facilitating transmission. When patients use conventional, bedside transmitters they can forget to bring them on trips, while many fewer fail to take their phone. Another advantage is that the link between a phone and a cardiac implant can be started in the clinic once the patient downloads an app. Bedside units need home setup, and “some patients never even get theirs out of the box,” Dr. Tarakji lamented.
Another feature of handheld device transmissions that run off an app is that the app can display clinical metrics, activity, device performance, and transmission history, as well as educational information. All of these features can enhance patient engagement with their implanted device, their arrhythmia, and their health status. Bedside units often give patients little feedback, and they don’t display clinical data. “The real challenge for clinicians is what data you let patients see. That’s complicated,” Dr. Tarakji said.
“This study was designed to see whether the technology works. The next step is to study how it affects risk-factor modification” or other outcomes. “There are many opportunities” to explore with this new data transmission and processing capability, he concluded.
The BlueSync Field Evaluation study enrolled patients at 20 centers in the United States, France, Italy, and the United Kingdom during 2018, and the 245 patients who received a BlueSync device and were included in the analysis sent at least one of their scheduled data transmissions during their 12 months of follow-up. Participants were eligible if they were willing to use their own smart phone or pad that could interact with their cardiac implant, and included both first-time implant recipients as well as some patients who received replacement units.
Personal device–based data transmission from cardiac implants “will no doubt change the way we manage patients,” commented Nassir F. Marrouche, MD, a cardiac electrophysiologist and professor of medicine at Tulane University in New Orleans, and a designated discussant for the report. “Every implanted cardiac device should be able to connect with a phone, which can improve adoption and adherence,” he said.
But the study has several limitations for interpreting the implications of the findings, starting with its limited size and single-arm design, noted a second discussant, Roderick Tung, MD, director of cardiac electrophysiology at the University of Chicago. Another issue is the generalizability of the findings, which are likely biased by involving only patients who own a smart phone or tablet and may be more likely to transmit their data regardless of the means. And comparing transmission success in a prospective study with rates that occurred during real-world, routine practice could have a Hawthorne effect bias, where people under study behave differently than they do in everyday life. But that effect may be mitigated by confirmatory findings from a real-world group that also used smart-device transmission included in the report. Despite these caveats, it’s valuable to develop new ways of improving data collection from cardiac devices, Dr. Tung said.
The BlueSync Field Evaluation study was sponsored by Medtronic, the company that markets Bluetooth-enabled cardiac devices. Dr. Tarakji has been a consultant to Medtronic, and also to AliveCor, Boston Scientific, and Johnson & Johnson. Dr. Marrouche has been a consultant to Medtronic as well as to Biosense Webster, Biotronik, Cardiac Design, and Preventice, and he has received research funding from Abbott, Biosense Webster, Boston Scientific, and GE Healthcare. Dr. Tung has been a speaker on behalf of Abbott, Boston Scientific, and Biosense Webster.
SOURCE: Tarakji KG. Heart Rhythm 2020, Abstract D-LBCT04-01.
FROM HEART RHYTHM 2020
Ventricular tachycardia storm responds to magnetic stimulation
In a pilot study of five patients with ventricular tachycardia (VT) storm that was refractory to antiarrhythmic drug therapy, treatment with noninvasive transcutaneous magnetic stimulation (TCMS) was associated with a lower arrhythmia burden.
The five patients were men aged 40 to 68 years with VT storm, defined as at least three episodes of sustained VT in the preceding 24 hours. The patients experienced a drop in both sustained and nonsustained VT with TCMS.
The study “aimed at developing a novel system for noninvasively and nondestructively interrupting the sympathetic tone,” corresponding author Timothy M. Markman, MD, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, told theheart.org | Medscape Cardiology. “We demonstrated that the technique was safe and that there was a strong signal of efficacy,” he added.
“We know that interrupting the sympathetic tone in these patients is beneficial,” said Markman, “but our strategies for doing so are mostly invasive and associated with a significant risk profile.”
The research letter was published online May 5 in the Journal of the American Medical Association. It was also presented during the virtual Heart Rhythm Society 2020 conference.
Growing body of evidence
Numerous studies have linked autonomic neuromodulation, including local blockade of the left stellate ganglion, with a reduction of cardiac sympathetic input in patients with VT storm, the authors write.
“This adds to a growing body of literature that autonomic neuromodulation is a valuable tool in the management of arrhythmias,” said Markman.
The use of magnetic stimulation to treat arrhythmias by targeting cardiac sympathetic innervation has been demonstrated in animal studies. The authors note that, to their knowledge, this is the first study involving humans.
Evidence suggests that TCMS may serve as a bridge for patients with difficult-to- treat VT to reduce VT and eliminate antiarrhythmic drug therapies and the associated risks, the authors say.
A lower VT burden
Five participants were included in the study. The patients were followed from March 2019 to June 2019. All had experienced at least three episodes of sustained VT (>30 sec) in the 24 hours preceding treatment. Patients with implantable cardiac devices were excluded.
The investigators used a figure 8 TCMS coil that was attached to a magnetic stimulation system positioned lateral to the C7 spinous process in approximation of the left stellate ganglion. TCMS was delivered at 80% of the left trapezius motor threshold at a frequency of 0.9 Hz for 60 minutes, the authors write. For one patient (patient no. 4), TCMS was shut off after 17 minutes, owing to the coil’s overheating. That resulted in the patient’s not being able to complete the protocol, they note.
Patients were monitored during and immediately after treatment for adverse events, including hemodynamic compromise, local discomfort, and skin irritation.
Results showed that compared to the 24-hour baseline period, sustained VT was reduced from 99 to five episodes, and nonsustained VT was reduced from 150 to 58 episodes in the 48 hours following TCMS.
In addition, 41 total external shocks were performed at the 24-hour baseline before TCMS. No external shocks were performed 48 hours after TCMS treatment.
Of the three patients who were not under sedation, none reported discomfort from TCMS.
Before TCMS treatment began, VT was refractory to a mean (SD) of 2.5 (2.1) antiarrhythmic drugs per patient. Within the 48-hour follow-up, patients received a mean of 1.2 (0.7) antiarrhythmic drugs. No additional antiarrhythmic drug was added, the authors note. Only patient no. 4, who did not complete the protocol, underwent ablation 36 hours post enrollment, they add.
The authors note some limitations, such as small case number. Markman told theheart.org | Medscape Cardiology that enrollment of patients in a randomized, sham-controlled trial to demonstrate efficacy is underway.
Physiology studies to evaluate the effects of this therapy while optimizing the technical aspects of the delivery of transcutaneous magnetic stimulation are also being conducted, he adds. Other limitations include the absence of control measures and exclusion of patients with implantable cardiac devices.
A potential addition to treatment
Gordon F. Tomaselli, MD, past president of the American Heart Association and current dean of the Albert Einstein College of Medicine, New York City, who was not involved in the research, told theheart.org | Medscape Cardiology that “the results are kind of interesting; it actually changes the function in the ganglion in the neck that actually innervates the heart, excites the heart, if you will.
“Clearly it wasn’t something that was just happening while this therapy was applied, but instead there’s some changes made when the sympathetic ganglion is targeted,” Tomaselli said. “They’re changing it functionally somehow, reducing the stimulating input to the heart, and in doing so, reducing the frequency of arrhythmias.”
Tomaselli suggested TCMS might be helpful in choosing among alternative treatments, such as sympathetic denervation. “It might also be a way to decide whether or not somebody might benefit, for example, from permanent dissection,” he said. “If you do this therapy, if it quiets things down but then it comes back after a while, you may consider denervation of that ganglion.”
Tomaselli adds that this treatment might be applied in different ways. “In some future iteration, it could even be implantable, could be patient activated or automatically activated ― for example, if a rapid heart rate is detected, that kind of thing.”
He noted that “there may be applications of this ultra-low frequency to other arrythmias, more common arrythmias, less life-threatening arrythmias, like atrial fibrillation; so there are a number of ways you might consider using this to treat cardiac rhythm disturbances by targeting the nervous system.”
Nazarian has consulted for Siemens, CardioSolv, and Circle Software and is a principle investigator for research funding to the University of Pennsylvania from Biosense-Webster, Siemens, ImriCor, and the National Institutes of Health. No other relevant financial relationships have been disclosed.
This story first appeared on Medscape.com.
In a pilot study of five patients with ventricular tachycardia (VT) storm that was refractory to antiarrhythmic drug therapy, treatment with noninvasive transcutaneous magnetic stimulation (TCMS) was associated with a lower arrhythmia burden.
The five patients were men aged 40 to 68 years with VT storm, defined as at least three episodes of sustained VT in the preceding 24 hours. The patients experienced a drop in both sustained and nonsustained VT with TCMS.
The study “aimed at developing a novel system for noninvasively and nondestructively interrupting the sympathetic tone,” corresponding author Timothy M. Markman, MD, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, told theheart.org | Medscape Cardiology. “We demonstrated that the technique was safe and that there was a strong signal of efficacy,” he added.
“We know that interrupting the sympathetic tone in these patients is beneficial,” said Markman, “but our strategies for doing so are mostly invasive and associated with a significant risk profile.”
The research letter was published online May 5 in the Journal of the American Medical Association. It was also presented during the virtual Heart Rhythm Society 2020 conference.
Growing body of evidence
Numerous studies have linked autonomic neuromodulation, including local blockade of the left stellate ganglion, with a reduction of cardiac sympathetic input in patients with VT storm, the authors write.
“This adds to a growing body of literature that autonomic neuromodulation is a valuable tool in the management of arrhythmias,” said Markman.
The use of magnetic stimulation to treat arrhythmias by targeting cardiac sympathetic innervation has been demonstrated in animal studies. The authors note that, to their knowledge, this is the first study involving humans.
Evidence suggests that TCMS may serve as a bridge for patients with difficult-to- treat VT to reduce VT and eliminate antiarrhythmic drug therapies and the associated risks, the authors say.
A lower VT burden
Five participants were included in the study. The patients were followed from March 2019 to June 2019. All had experienced at least three episodes of sustained VT (>30 sec) in the 24 hours preceding treatment. Patients with implantable cardiac devices were excluded.
The investigators used a figure 8 TCMS coil that was attached to a magnetic stimulation system positioned lateral to the C7 spinous process in approximation of the left stellate ganglion. TCMS was delivered at 80% of the left trapezius motor threshold at a frequency of 0.9 Hz for 60 minutes, the authors write. For one patient (patient no. 4), TCMS was shut off after 17 minutes, owing to the coil’s overheating. That resulted in the patient’s not being able to complete the protocol, they note.
Patients were monitored during and immediately after treatment for adverse events, including hemodynamic compromise, local discomfort, and skin irritation.
Results showed that compared to the 24-hour baseline period, sustained VT was reduced from 99 to five episodes, and nonsustained VT was reduced from 150 to 58 episodes in the 48 hours following TCMS.
In addition, 41 total external shocks were performed at the 24-hour baseline before TCMS. No external shocks were performed 48 hours after TCMS treatment.
Of the three patients who were not under sedation, none reported discomfort from TCMS.
Before TCMS treatment began, VT was refractory to a mean (SD) of 2.5 (2.1) antiarrhythmic drugs per patient. Within the 48-hour follow-up, patients received a mean of 1.2 (0.7) antiarrhythmic drugs. No additional antiarrhythmic drug was added, the authors note. Only patient no. 4, who did not complete the protocol, underwent ablation 36 hours post enrollment, they add.
The authors note some limitations, such as small case number. Markman told theheart.org | Medscape Cardiology that enrollment of patients in a randomized, sham-controlled trial to demonstrate efficacy is underway.
Physiology studies to evaluate the effects of this therapy while optimizing the technical aspects of the delivery of transcutaneous magnetic stimulation are also being conducted, he adds. Other limitations include the absence of control measures and exclusion of patients with implantable cardiac devices.
A potential addition to treatment
Gordon F. Tomaselli, MD, past president of the American Heart Association and current dean of the Albert Einstein College of Medicine, New York City, who was not involved in the research, told theheart.org | Medscape Cardiology that “the results are kind of interesting; it actually changes the function in the ganglion in the neck that actually innervates the heart, excites the heart, if you will.
“Clearly it wasn’t something that was just happening while this therapy was applied, but instead there’s some changes made when the sympathetic ganglion is targeted,” Tomaselli said. “They’re changing it functionally somehow, reducing the stimulating input to the heart, and in doing so, reducing the frequency of arrhythmias.”
Tomaselli suggested TCMS might be helpful in choosing among alternative treatments, such as sympathetic denervation. “It might also be a way to decide whether or not somebody might benefit, for example, from permanent dissection,” he said. “If you do this therapy, if it quiets things down but then it comes back after a while, you may consider denervation of that ganglion.”
Tomaselli adds that this treatment might be applied in different ways. “In some future iteration, it could even be implantable, could be patient activated or automatically activated ― for example, if a rapid heart rate is detected, that kind of thing.”
He noted that “there may be applications of this ultra-low frequency to other arrythmias, more common arrythmias, less life-threatening arrythmias, like atrial fibrillation; so there are a number of ways you might consider using this to treat cardiac rhythm disturbances by targeting the nervous system.”
Nazarian has consulted for Siemens, CardioSolv, and Circle Software and is a principle investigator for research funding to the University of Pennsylvania from Biosense-Webster, Siemens, ImriCor, and the National Institutes of Health. No other relevant financial relationships have been disclosed.
This story first appeared on Medscape.com.
In a pilot study of five patients with ventricular tachycardia (VT) storm that was refractory to antiarrhythmic drug therapy, treatment with noninvasive transcutaneous magnetic stimulation (TCMS) was associated with a lower arrhythmia burden.
The five patients were men aged 40 to 68 years with VT storm, defined as at least three episodes of sustained VT in the preceding 24 hours. The patients experienced a drop in both sustained and nonsustained VT with TCMS.
The study “aimed at developing a novel system for noninvasively and nondestructively interrupting the sympathetic tone,” corresponding author Timothy M. Markman, MD, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, told theheart.org | Medscape Cardiology. “We demonstrated that the technique was safe and that there was a strong signal of efficacy,” he added.
“We know that interrupting the sympathetic tone in these patients is beneficial,” said Markman, “but our strategies for doing so are mostly invasive and associated with a significant risk profile.”
The research letter was published online May 5 in the Journal of the American Medical Association. It was also presented during the virtual Heart Rhythm Society 2020 conference.
Growing body of evidence
Numerous studies have linked autonomic neuromodulation, including local blockade of the left stellate ganglion, with a reduction of cardiac sympathetic input in patients with VT storm, the authors write.
“This adds to a growing body of literature that autonomic neuromodulation is a valuable tool in the management of arrhythmias,” said Markman.
The use of magnetic stimulation to treat arrhythmias by targeting cardiac sympathetic innervation has been demonstrated in animal studies. The authors note that, to their knowledge, this is the first study involving humans.
Evidence suggests that TCMS may serve as a bridge for patients with difficult-to- treat VT to reduce VT and eliminate antiarrhythmic drug therapies and the associated risks, the authors say.
A lower VT burden
Five participants were included in the study. The patients were followed from March 2019 to June 2019. All had experienced at least three episodes of sustained VT (>30 sec) in the 24 hours preceding treatment. Patients with implantable cardiac devices were excluded.
The investigators used a figure 8 TCMS coil that was attached to a magnetic stimulation system positioned lateral to the C7 spinous process in approximation of the left stellate ganglion. TCMS was delivered at 80% of the left trapezius motor threshold at a frequency of 0.9 Hz for 60 minutes, the authors write. For one patient (patient no. 4), TCMS was shut off after 17 minutes, owing to the coil’s overheating. That resulted in the patient’s not being able to complete the protocol, they note.
Patients were monitored during and immediately after treatment for adverse events, including hemodynamic compromise, local discomfort, and skin irritation.
Results showed that compared to the 24-hour baseline period, sustained VT was reduced from 99 to five episodes, and nonsustained VT was reduced from 150 to 58 episodes in the 48 hours following TCMS.
In addition, 41 total external shocks were performed at the 24-hour baseline before TCMS. No external shocks were performed 48 hours after TCMS treatment.
Of the three patients who were not under sedation, none reported discomfort from TCMS.
Before TCMS treatment began, VT was refractory to a mean (SD) of 2.5 (2.1) antiarrhythmic drugs per patient. Within the 48-hour follow-up, patients received a mean of 1.2 (0.7) antiarrhythmic drugs. No additional antiarrhythmic drug was added, the authors note. Only patient no. 4, who did not complete the protocol, underwent ablation 36 hours post enrollment, they add.
The authors note some limitations, such as small case number. Markman told theheart.org | Medscape Cardiology that enrollment of patients in a randomized, sham-controlled trial to demonstrate efficacy is underway.
Physiology studies to evaluate the effects of this therapy while optimizing the technical aspects of the delivery of transcutaneous magnetic stimulation are also being conducted, he adds. Other limitations include the absence of control measures and exclusion of patients with implantable cardiac devices.
A potential addition to treatment
Gordon F. Tomaselli, MD, past president of the American Heart Association and current dean of the Albert Einstein College of Medicine, New York City, who was not involved in the research, told theheart.org | Medscape Cardiology that “the results are kind of interesting; it actually changes the function in the ganglion in the neck that actually innervates the heart, excites the heart, if you will.
“Clearly it wasn’t something that was just happening while this therapy was applied, but instead there’s some changes made when the sympathetic ganglion is targeted,” Tomaselli said. “They’re changing it functionally somehow, reducing the stimulating input to the heart, and in doing so, reducing the frequency of arrhythmias.”
Tomaselli suggested TCMS might be helpful in choosing among alternative treatments, such as sympathetic denervation. “It might also be a way to decide whether or not somebody might benefit, for example, from permanent dissection,” he said. “If you do this therapy, if it quiets things down but then it comes back after a while, you may consider denervation of that ganglion.”
Tomaselli adds that this treatment might be applied in different ways. “In some future iteration, it could even be implantable, could be patient activated or automatically activated ― for example, if a rapid heart rate is detected, that kind of thing.”
He noted that “there may be applications of this ultra-low frequency to other arrythmias, more common arrythmias, less life-threatening arrythmias, like atrial fibrillation; so there are a number of ways you might consider using this to treat cardiac rhythm disturbances by targeting the nervous system.”
Nazarian has consulted for Siemens, CardioSolv, and Circle Software and is a principle investigator for research funding to the University of Pennsylvania from Biosense-Webster, Siemens, ImriCor, and the National Institutes of Health. No other relevant financial relationships have been disclosed.
This story first appeared on Medscape.com.
Lancet, NEJM retract studies on hydroxychloroquine for COVID-19
The Lancet announced today that it has retracted a highly cited study that suggested hydroxychloroquine may cause more harm than benefit in patients with COVID-19. Hours later, the New England Journal of Medicine announced that it had retracted a second article by some of the same authors, also on heart disease and COVID-19.
The Lancet article, titled “Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: A multinational registry analysis” was originally published online May 22. The NEJM article, “Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19” was initially published May 1.
Three authors of the Lancet article, Mandeep R. Mehra, MD, Frank Ruschitzka, MD, and Amit N. Patel, MD, wrote in a letter that the action came after concerns were raised about the integrity of the data, and about how the analysis was conducted by Chicago-based Surgisphere Corp and study coauthor Sapan Desai, MD, Surgisphere’s founder and CEO.
The authors asked for an independent third-party review of Surgisphere to evaluate the integrity of the trial elements and to replicate the analyses in the article.
“Our independent peer reviewers informed us that Surgisphere would not transfer the full dataset, client contracts, and the full ISO audit report to their servers for analysis, as such transfer would violate client agreements and confidentiality requirements,” the authors wrote.
Therefore, reviewers were not able to conduct the review and notified the authors they would withdraw from the peer-review process.
The Lancet said in a statement: “The Lancet takes issues of scientific integrity extremely seriously, and there are many outstanding questions about Surgisphere and the data that were allegedly included in this study. Following guidelines from the Committee on Publication Ethics and International Committee of Medical Journal Editors, institutional reviews of Surgisphere’s research collaborations are urgently needed.”
The authors wrote, “We can never forget the responsibility we have as researchers to scrupulously ensure that we rely on data sources that adhere to our high standards. Based on this development, we can no longer vouch for the veracity of the primary data sources. Due to this unfortunate development, the authors request that the paper be retracted.
“We all entered this collaboration to contribute in good faith and at a time of great need during the COVID-19 pandemic. We deeply apologize to you, the editors, and the journal readership for any embarrassment or inconvenience that this may have caused.”
In a similar, if briefer, note, the authors requested that the New England Journal of Medicine retract the earlier article as well. The retraction notice on the website reads: “Because all the authors were not granted access to the raw data and the raw data could not be made available to a third-party auditor, we are unable to validate the primary data sources underlying our article, ‘Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19.’ We therefore request that the article be retracted. We apologize to the editors and to readers of the Journal for the difficulties that this has caused.”
Both journals had already published “Expression of Concern” notices about the articles. The expression of concern followed an open letter, endorsed by more than 200 scientists, ethicists, and clinicians and posted on May 28, questioning the data and ethics of the study.
A version of this article originally appeared on Medscape.com.
The Lancet announced today that it has retracted a highly cited study that suggested hydroxychloroquine may cause more harm than benefit in patients with COVID-19. Hours later, the New England Journal of Medicine announced that it had retracted a second article by some of the same authors, also on heart disease and COVID-19.
The Lancet article, titled “Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: A multinational registry analysis” was originally published online May 22. The NEJM article, “Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19” was initially published May 1.
Three authors of the Lancet article, Mandeep R. Mehra, MD, Frank Ruschitzka, MD, and Amit N. Patel, MD, wrote in a letter that the action came after concerns were raised about the integrity of the data, and about how the analysis was conducted by Chicago-based Surgisphere Corp and study coauthor Sapan Desai, MD, Surgisphere’s founder and CEO.
The authors asked for an independent third-party review of Surgisphere to evaluate the integrity of the trial elements and to replicate the analyses in the article.
“Our independent peer reviewers informed us that Surgisphere would not transfer the full dataset, client contracts, and the full ISO audit report to their servers for analysis, as such transfer would violate client agreements and confidentiality requirements,” the authors wrote.
Therefore, reviewers were not able to conduct the review and notified the authors they would withdraw from the peer-review process.
The Lancet said in a statement: “The Lancet takes issues of scientific integrity extremely seriously, and there are many outstanding questions about Surgisphere and the data that were allegedly included in this study. Following guidelines from the Committee on Publication Ethics and International Committee of Medical Journal Editors, institutional reviews of Surgisphere’s research collaborations are urgently needed.”
The authors wrote, “We can never forget the responsibility we have as researchers to scrupulously ensure that we rely on data sources that adhere to our high standards. Based on this development, we can no longer vouch for the veracity of the primary data sources. Due to this unfortunate development, the authors request that the paper be retracted.
“We all entered this collaboration to contribute in good faith and at a time of great need during the COVID-19 pandemic. We deeply apologize to you, the editors, and the journal readership for any embarrassment or inconvenience that this may have caused.”
In a similar, if briefer, note, the authors requested that the New England Journal of Medicine retract the earlier article as well. The retraction notice on the website reads: “Because all the authors were not granted access to the raw data and the raw data could not be made available to a third-party auditor, we are unable to validate the primary data sources underlying our article, ‘Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19.’ We therefore request that the article be retracted. We apologize to the editors and to readers of the Journal for the difficulties that this has caused.”
Both journals had already published “Expression of Concern” notices about the articles. The expression of concern followed an open letter, endorsed by more than 200 scientists, ethicists, and clinicians and posted on May 28, questioning the data and ethics of the study.
A version of this article originally appeared on Medscape.com.
The Lancet announced today that it has retracted a highly cited study that suggested hydroxychloroquine may cause more harm than benefit in patients with COVID-19. Hours later, the New England Journal of Medicine announced that it had retracted a second article by some of the same authors, also on heart disease and COVID-19.
The Lancet article, titled “Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: A multinational registry analysis” was originally published online May 22. The NEJM article, “Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19” was initially published May 1.
Three authors of the Lancet article, Mandeep R. Mehra, MD, Frank Ruschitzka, MD, and Amit N. Patel, MD, wrote in a letter that the action came after concerns were raised about the integrity of the data, and about how the analysis was conducted by Chicago-based Surgisphere Corp and study coauthor Sapan Desai, MD, Surgisphere’s founder and CEO.
The authors asked for an independent third-party review of Surgisphere to evaluate the integrity of the trial elements and to replicate the analyses in the article.
“Our independent peer reviewers informed us that Surgisphere would not transfer the full dataset, client contracts, and the full ISO audit report to their servers for analysis, as such transfer would violate client agreements and confidentiality requirements,” the authors wrote.
Therefore, reviewers were not able to conduct the review and notified the authors they would withdraw from the peer-review process.
The Lancet said in a statement: “The Lancet takes issues of scientific integrity extremely seriously, and there are many outstanding questions about Surgisphere and the data that were allegedly included in this study. Following guidelines from the Committee on Publication Ethics and International Committee of Medical Journal Editors, institutional reviews of Surgisphere’s research collaborations are urgently needed.”
The authors wrote, “We can never forget the responsibility we have as researchers to scrupulously ensure that we rely on data sources that adhere to our high standards. Based on this development, we can no longer vouch for the veracity of the primary data sources. Due to this unfortunate development, the authors request that the paper be retracted.
“We all entered this collaboration to contribute in good faith and at a time of great need during the COVID-19 pandemic. We deeply apologize to you, the editors, and the journal readership for any embarrassment or inconvenience that this may have caused.”
In a similar, if briefer, note, the authors requested that the New England Journal of Medicine retract the earlier article as well. The retraction notice on the website reads: “Because all the authors were not granted access to the raw data and the raw data could not be made available to a third-party auditor, we are unable to validate the primary data sources underlying our article, ‘Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19.’ We therefore request that the article be retracted. We apologize to the editors and to readers of the Journal for the difficulties that this has caused.”
Both journals had already published “Expression of Concern” notices about the articles. The expression of concern followed an open letter, endorsed by more than 200 scientists, ethicists, and clinicians and posted on May 28, questioning the data and ethics of the study.
A version of this article originally appeared on Medscape.com.
More evidence hydroxychloroquine is ineffective, harmful in COVID-19
Hydroxychloroquine and chloroquine, with or without azithromycin or clarithromycin, offer no benefit in treating patients with COVID-19 and, instead, are associated with ventricular arrhythmias and higher rates of mortality, according to a major new international study.
In the largest observational study of its kind, including close to 100,000 people in 671 hospitals on six continents, investigators compared outcomes in 15,000 patients with COVID-19 treated with hydroxychloroquine and chloroquine alone or in combination with a macrolide with 80,000 control patients with COVID-19 not receiving these agents.
Treatment with any of these medications, either alone or in combination, was associated with increased death during hospitalization; compared with about 10% in control group patients, mortality rates ranged from more than 16% to almost 24% in the treated groups.
Patients treated with hydroxychloroquine plus a macrolide showed the highest rates of serious cardiac arrhythmias, and, even after accounting for demographic factors and comorbidities, this combination was found to be associated with a more than 5-fold increase in the risk of developing a serious arrhythmia while in the hospital.
“In this real-world study, the biggest yet, we looked at 100,000 patients [with COVID-19] across six continents and found not the slightest hint of benefits and only risks, and the data is pretty straightforward,” study coauthor Frank Ruschitzka, MD, director of the Heart Center at University Hospital, Zürich, said in an interview. The study was published online May 22 in The Lancet.
‘Inconclusive’ evidence
The absence of an effective treatment for COVID-19 has led to the “repurposing” of the antimalarial drug chloroquine and its analogue hydroxychloroquine, which is used for treating autoimmune disease, but this approach is based on anecdotal evidence or open-label randomized trials that have been “largely inconclusive,” the authors wrote.
Additional agents used to treat COVID-19 are second-generation macrolides (azithromycin or clarithromycin), in combination with chloroquine or hydroxychloroquine, “despite limited evidence” and the risk for ventricular arrhythmias, the authors noted.
“Our primary question was whether there was any associated benefits of the use of hydroxychloroquine, chloroquine, or a combined regimen with macrolides in treating COVID-19, and — if there was no benefit — would there be harm?” lead author Mandeep R. Mehra, MD, MSc, William Harvey Distinguished Chair in Advanced Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, said in an interview.
The investigators used data from a multinational registry comprising 671 hospitals that included patients (n = 96,032; mean age 53.8 years; 46.3% female) who had been hospitalized between Dec. 20, 2019, and April 14, 2020, with confirmed COVID-19 infection.
They also collected data about demographics, underlying comorbidities, and medical history, and medications that patients were taking at baseline.
Patients receiving treatment (n = 14,888) were divided into four groups: those receiving chloroquine alone (n = 1,868), those receiving chloroquine with a macrolide (n = 3,783), those receiving hydroxychloroquine alone (n = 3,016) and those receiving hydroxychloroquine with a macrolide (n = 6,221).
The remaining patients not treated with these regimens (n = 81,144) were regarded as the control group.
Most patients (65.9%) came from North America, followed by Europe (17.39%), Asia (7.9%), Africa (4.6%), South America (3.7%), and Australia (0.6%). Most (66.9%) were white, followed by patients of Asian origin (14.1%), black patients (9.4%), and Hispanic patients (6.2%).
Comorbidities and underlying conditions included obesity, hyperlipidemia, and hypertension in about 30%.
Comorbidities and underlying conditions
The investigators conducted multiple analyses to control for confounding variables, including Cox proportional hazards regression and propensity score matching analyses.
“In an observational study, there is always a chance of residual confounding, which is why we did propensity score based matched analyses,” Dr. Ruschitzka explained.
No significant differences were found in distribution of demographics and comorbidities between the groups.
As good as it gets
“We found no benefit in any of the four treatment regimens for hospitalized patients with COVID-19, but we did notice higher rates of death and serious ventricular arrhythmias in these patients, compared to the controls,” Dr. Mehra reported.
Of the patients in the control group, roughly 9.3% died during their hospitalization, compared with 16.4% of patients treated with chloroquine alone, 18.0% of those treated with hydroxychloroquine alone, 22.2% of those treated with chloroquine and a macrolide, and 23.8% of those treated with hydroxychloroquine and a macrolide.
After accounting for confounding variables, the researchers estimated that the excess mortality risk attributable to use of the drug regimen ranged from 34% to 45%.
Patients treated with any of the four regimens sustained more serious arrhythmias, compared with those in the control group (0.35), with the biggest increase seen in the group treated with the combination of hydroxychloroquine plus a macrolide (8.1%), followed by chloroquine with a macrolide (6.5%), hydroxychloroquine alone (6.1%), and chloroquine alone (4.3%).
“We were fairly reassured that, although the study was observational, the signals were robust and consistent across all regions of the world in diverse populations, and we did not see any muting of that signal, depending on region,” Dr. Mehra said.
“Two months ago, we were all scratching our heads about how to treat patients with COVID-19, and then came a drug [hydroxychloroquine] with some anecdotal evidence, but now we have 2 months more experience, and we looked to science to provide some answer,” Dr. Ruschitzka said.
“Although this was not a randomized, controlled trial, so we do not have a definite answer, the data provided in this [large, multinational] real-world study is as good as it gets and the best data we have,” he concluded.
“Let the science speak for itself”
Commenting on the study in an interview, Christian Funck-Brentano, MD, from the Hospital Pitié-Salpêtrière and Sorbonne University, both in Paris, said that, although the study is observational and therefore not as reliable as a randomized controlled trial, it is “nevertheless well-documented, studied a huge amount of people, and utilized several sensitivity methods, all of which showed the same results.”
Dr. Funck-Brentano, who is the coauthor of an accompanying editorial in The Lancet and was not involved with the study, said that “we now have no evidence that hydroxychloroquine and chloroquine alone or in combination with a macrolide do any good and we have potential evidence that they do harm and kill people.”
Also commenting on the study in an interview, David Holtgrave, PhD, dean of the School of Public Health at the State University of New York at Albany, said that, “while no one observational study alone would lead to a firm clinical recommendation, I think it is helpful for physicians and public health officials to be aware of the findings of the peer-reviewed observational studies to date and the National Institutes of Health COVID-19 treatment guidelines and the Food and Drug Administration’s statement of drug safety concern about hydroxychloroquine to inform their decision-making as we await the results of randomized clinical trials of these drugs for the treatment of COVID-19,” said Dr. Holtgrave, who was not involved with the study.
He added that, to his knowledge, there are “still no published studies of prophylactic use of these drugs to prevent COVID-19.”
Dr. Mehra emphasized that a cardinal principle of practicing medicine is “first do no harm” and “even in situations where you believe a desperate disease calls for desperate measures, responsible physicians should take a step back and ask if we are doing harm, and until we can say we aren’t, I don’t think it’s wise to push something like this in the absence of good efficacy data.”
Dr. Ruschitzka added that those who are encouraging the use of these agents “should review their decision based on today’s data and let the science speak for itself.”
The study was supported by the William Harvey Distinguished Chair in Advanced Cardiovascular Medicine at Brigham and Women’s Hospital, Boston. Dr. Mehra reported personal fees from Abbott, Medtronic, Janssen, Mesoblast, Portola, Bayer, Baim Institute for Clinical Research, NuPulseCV, FineHeart, Leviticus, Roivant, and Triple Gene. Dr. Ruschitzka was paid for time spent as a committee member for clinical trials, advisory boards, other forms of consulting, and lectures or presentations; these payments were made directly to the University of Zürich and no personal payments were received in relation to these trials or other activities. Dr. Funck-Brentano, his coauthor, and Dr. Holtgrave declared no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
Hydroxychloroquine and chloroquine, with or without azithromycin or clarithromycin, offer no benefit in treating patients with COVID-19 and, instead, are associated with ventricular arrhythmias and higher rates of mortality, according to a major new international study.
In the largest observational study of its kind, including close to 100,000 people in 671 hospitals on six continents, investigators compared outcomes in 15,000 patients with COVID-19 treated with hydroxychloroquine and chloroquine alone or in combination with a macrolide with 80,000 control patients with COVID-19 not receiving these agents.
Treatment with any of these medications, either alone or in combination, was associated with increased death during hospitalization; compared with about 10% in control group patients, mortality rates ranged from more than 16% to almost 24% in the treated groups.
Patients treated with hydroxychloroquine plus a macrolide showed the highest rates of serious cardiac arrhythmias, and, even after accounting for demographic factors and comorbidities, this combination was found to be associated with a more than 5-fold increase in the risk of developing a serious arrhythmia while in the hospital.
“In this real-world study, the biggest yet, we looked at 100,000 patients [with COVID-19] across six continents and found not the slightest hint of benefits and only risks, and the data is pretty straightforward,” study coauthor Frank Ruschitzka, MD, director of the Heart Center at University Hospital, Zürich, said in an interview. The study was published online May 22 in The Lancet.
‘Inconclusive’ evidence
The absence of an effective treatment for COVID-19 has led to the “repurposing” of the antimalarial drug chloroquine and its analogue hydroxychloroquine, which is used for treating autoimmune disease, but this approach is based on anecdotal evidence or open-label randomized trials that have been “largely inconclusive,” the authors wrote.
Additional agents used to treat COVID-19 are second-generation macrolides (azithromycin or clarithromycin), in combination with chloroquine or hydroxychloroquine, “despite limited evidence” and the risk for ventricular arrhythmias, the authors noted.
“Our primary question was whether there was any associated benefits of the use of hydroxychloroquine, chloroquine, or a combined regimen with macrolides in treating COVID-19, and — if there was no benefit — would there be harm?” lead author Mandeep R. Mehra, MD, MSc, William Harvey Distinguished Chair in Advanced Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, said in an interview.
The investigators used data from a multinational registry comprising 671 hospitals that included patients (n = 96,032; mean age 53.8 years; 46.3% female) who had been hospitalized between Dec. 20, 2019, and April 14, 2020, with confirmed COVID-19 infection.
They also collected data about demographics, underlying comorbidities, and medical history, and medications that patients were taking at baseline.
Patients receiving treatment (n = 14,888) were divided into four groups: those receiving chloroquine alone (n = 1,868), those receiving chloroquine with a macrolide (n = 3,783), those receiving hydroxychloroquine alone (n = 3,016) and those receiving hydroxychloroquine with a macrolide (n = 6,221).
The remaining patients not treated with these regimens (n = 81,144) were regarded as the control group.
Most patients (65.9%) came from North America, followed by Europe (17.39%), Asia (7.9%), Africa (4.6%), South America (3.7%), and Australia (0.6%). Most (66.9%) were white, followed by patients of Asian origin (14.1%), black patients (9.4%), and Hispanic patients (6.2%).
Comorbidities and underlying conditions included obesity, hyperlipidemia, and hypertension in about 30%.
Comorbidities and underlying conditions
The investigators conducted multiple analyses to control for confounding variables, including Cox proportional hazards regression and propensity score matching analyses.
“In an observational study, there is always a chance of residual confounding, which is why we did propensity score based matched analyses,” Dr. Ruschitzka explained.
No significant differences were found in distribution of demographics and comorbidities between the groups.
As good as it gets
“We found no benefit in any of the four treatment regimens for hospitalized patients with COVID-19, but we did notice higher rates of death and serious ventricular arrhythmias in these patients, compared to the controls,” Dr. Mehra reported.
Of the patients in the control group, roughly 9.3% died during their hospitalization, compared with 16.4% of patients treated with chloroquine alone, 18.0% of those treated with hydroxychloroquine alone, 22.2% of those treated with chloroquine and a macrolide, and 23.8% of those treated with hydroxychloroquine and a macrolide.
After accounting for confounding variables, the researchers estimated that the excess mortality risk attributable to use of the drug regimen ranged from 34% to 45%.
Patients treated with any of the four regimens sustained more serious arrhythmias, compared with those in the control group (0.35), with the biggest increase seen in the group treated with the combination of hydroxychloroquine plus a macrolide (8.1%), followed by chloroquine with a macrolide (6.5%), hydroxychloroquine alone (6.1%), and chloroquine alone (4.3%).
“We were fairly reassured that, although the study was observational, the signals were robust and consistent across all regions of the world in diverse populations, and we did not see any muting of that signal, depending on region,” Dr. Mehra said.
“Two months ago, we were all scratching our heads about how to treat patients with COVID-19, and then came a drug [hydroxychloroquine] with some anecdotal evidence, but now we have 2 months more experience, and we looked to science to provide some answer,” Dr. Ruschitzka said.
“Although this was not a randomized, controlled trial, so we do not have a definite answer, the data provided in this [large, multinational] real-world study is as good as it gets and the best data we have,” he concluded.
“Let the science speak for itself”
Commenting on the study in an interview, Christian Funck-Brentano, MD, from the Hospital Pitié-Salpêtrière and Sorbonne University, both in Paris, said that, although the study is observational and therefore not as reliable as a randomized controlled trial, it is “nevertheless well-documented, studied a huge amount of people, and utilized several sensitivity methods, all of which showed the same results.”
Dr. Funck-Brentano, who is the coauthor of an accompanying editorial in The Lancet and was not involved with the study, said that “we now have no evidence that hydroxychloroquine and chloroquine alone or in combination with a macrolide do any good and we have potential evidence that they do harm and kill people.”
Also commenting on the study in an interview, David Holtgrave, PhD, dean of the School of Public Health at the State University of New York at Albany, said that, “while no one observational study alone would lead to a firm clinical recommendation, I think it is helpful for physicians and public health officials to be aware of the findings of the peer-reviewed observational studies to date and the National Institutes of Health COVID-19 treatment guidelines and the Food and Drug Administration’s statement of drug safety concern about hydroxychloroquine to inform their decision-making as we await the results of randomized clinical trials of these drugs for the treatment of COVID-19,” said Dr. Holtgrave, who was not involved with the study.
He added that, to his knowledge, there are “still no published studies of prophylactic use of these drugs to prevent COVID-19.”
Dr. Mehra emphasized that a cardinal principle of practicing medicine is “first do no harm” and “even in situations where you believe a desperate disease calls for desperate measures, responsible physicians should take a step back and ask if we are doing harm, and until we can say we aren’t, I don’t think it’s wise to push something like this in the absence of good efficacy data.”
Dr. Ruschitzka added that those who are encouraging the use of these agents “should review their decision based on today’s data and let the science speak for itself.”
The study was supported by the William Harvey Distinguished Chair in Advanced Cardiovascular Medicine at Brigham and Women’s Hospital, Boston. Dr. Mehra reported personal fees from Abbott, Medtronic, Janssen, Mesoblast, Portola, Bayer, Baim Institute for Clinical Research, NuPulseCV, FineHeart, Leviticus, Roivant, and Triple Gene. Dr. Ruschitzka was paid for time spent as a committee member for clinical trials, advisory boards, other forms of consulting, and lectures or presentations; these payments were made directly to the University of Zürich and no personal payments were received in relation to these trials or other activities. Dr. Funck-Brentano, his coauthor, and Dr. Holtgrave declared no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
Hydroxychloroquine and chloroquine, with or without azithromycin or clarithromycin, offer no benefit in treating patients with COVID-19 and, instead, are associated with ventricular arrhythmias and higher rates of mortality, according to a major new international study.
In the largest observational study of its kind, including close to 100,000 people in 671 hospitals on six continents, investigators compared outcomes in 15,000 patients with COVID-19 treated with hydroxychloroquine and chloroquine alone or in combination with a macrolide with 80,000 control patients with COVID-19 not receiving these agents.
Treatment with any of these medications, either alone or in combination, was associated with increased death during hospitalization; compared with about 10% in control group patients, mortality rates ranged from more than 16% to almost 24% in the treated groups.
Patients treated with hydroxychloroquine plus a macrolide showed the highest rates of serious cardiac arrhythmias, and, even after accounting for demographic factors and comorbidities, this combination was found to be associated with a more than 5-fold increase in the risk of developing a serious arrhythmia while in the hospital.
“In this real-world study, the biggest yet, we looked at 100,000 patients [with COVID-19] across six continents and found not the slightest hint of benefits and only risks, and the data is pretty straightforward,” study coauthor Frank Ruschitzka, MD, director of the Heart Center at University Hospital, Zürich, said in an interview. The study was published online May 22 in The Lancet.
‘Inconclusive’ evidence
The absence of an effective treatment for COVID-19 has led to the “repurposing” of the antimalarial drug chloroquine and its analogue hydroxychloroquine, which is used for treating autoimmune disease, but this approach is based on anecdotal evidence or open-label randomized trials that have been “largely inconclusive,” the authors wrote.
Additional agents used to treat COVID-19 are second-generation macrolides (azithromycin or clarithromycin), in combination with chloroquine or hydroxychloroquine, “despite limited evidence” and the risk for ventricular arrhythmias, the authors noted.
“Our primary question was whether there was any associated benefits of the use of hydroxychloroquine, chloroquine, or a combined regimen with macrolides in treating COVID-19, and — if there was no benefit — would there be harm?” lead author Mandeep R. Mehra, MD, MSc, William Harvey Distinguished Chair in Advanced Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, said in an interview.
The investigators used data from a multinational registry comprising 671 hospitals that included patients (n = 96,032; mean age 53.8 years; 46.3% female) who had been hospitalized between Dec. 20, 2019, and April 14, 2020, with confirmed COVID-19 infection.
They also collected data about demographics, underlying comorbidities, and medical history, and medications that patients were taking at baseline.
Patients receiving treatment (n = 14,888) were divided into four groups: those receiving chloroquine alone (n = 1,868), those receiving chloroquine with a macrolide (n = 3,783), those receiving hydroxychloroquine alone (n = 3,016) and those receiving hydroxychloroquine with a macrolide (n = 6,221).
The remaining patients not treated with these regimens (n = 81,144) were regarded as the control group.
Most patients (65.9%) came from North America, followed by Europe (17.39%), Asia (7.9%), Africa (4.6%), South America (3.7%), and Australia (0.6%). Most (66.9%) were white, followed by patients of Asian origin (14.1%), black patients (9.4%), and Hispanic patients (6.2%).
Comorbidities and underlying conditions included obesity, hyperlipidemia, and hypertension in about 30%.
Comorbidities and underlying conditions
The investigators conducted multiple analyses to control for confounding variables, including Cox proportional hazards regression and propensity score matching analyses.
“In an observational study, there is always a chance of residual confounding, which is why we did propensity score based matched analyses,” Dr. Ruschitzka explained.
No significant differences were found in distribution of demographics and comorbidities between the groups.
As good as it gets
“We found no benefit in any of the four treatment regimens for hospitalized patients with COVID-19, but we did notice higher rates of death and serious ventricular arrhythmias in these patients, compared to the controls,” Dr. Mehra reported.
Of the patients in the control group, roughly 9.3% died during their hospitalization, compared with 16.4% of patients treated with chloroquine alone, 18.0% of those treated with hydroxychloroquine alone, 22.2% of those treated with chloroquine and a macrolide, and 23.8% of those treated with hydroxychloroquine and a macrolide.
After accounting for confounding variables, the researchers estimated that the excess mortality risk attributable to use of the drug regimen ranged from 34% to 45%.
Patients treated with any of the four regimens sustained more serious arrhythmias, compared with those in the control group (0.35), with the biggest increase seen in the group treated with the combination of hydroxychloroquine plus a macrolide (8.1%), followed by chloroquine with a macrolide (6.5%), hydroxychloroquine alone (6.1%), and chloroquine alone (4.3%).
“We were fairly reassured that, although the study was observational, the signals were robust and consistent across all regions of the world in diverse populations, and we did not see any muting of that signal, depending on region,” Dr. Mehra said.
“Two months ago, we were all scratching our heads about how to treat patients with COVID-19, and then came a drug [hydroxychloroquine] with some anecdotal evidence, but now we have 2 months more experience, and we looked to science to provide some answer,” Dr. Ruschitzka said.
“Although this was not a randomized, controlled trial, so we do not have a definite answer, the data provided in this [large, multinational] real-world study is as good as it gets and the best data we have,” he concluded.
“Let the science speak for itself”
Commenting on the study in an interview, Christian Funck-Brentano, MD, from the Hospital Pitié-Salpêtrière and Sorbonne University, both in Paris, said that, although the study is observational and therefore not as reliable as a randomized controlled trial, it is “nevertheless well-documented, studied a huge amount of people, and utilized several sensitivity methods, all of which showed the same results.”
Dr. Funck-Brentano, who is the coauthor of an accompanying editorial in The Lancet and was not involved with the study, said that “we now have no evidence that hydroxychloroquine and chloroquine alone or in combination with a macrolide do any good and we have potential evidence that they do harm and kill people.”
Also commenting on the study in an interview, David Holtgrave, PhD, dean of the School of Public Health at the State University of New York at Albany, said that, “while no one observational study alone would lead to a firm clinical recommendation, I think it is helpful for physicians and public health officials to be aware of the findings of the peer-reviewed observational studies to date and the National Institutes of Health COVID-19 treatment guidelines and the Food and Drug Administration’s statement of drug safety concern about hydroxychloroquine to inform their decision-making as we await the results of randomized clinical trials of these drugs for the treatment of COVID-19,” said Dr. Holtgrave, who was not involved with the study.
He added that, to his knowledge, there are “still no published studies of prophylactic use of these drugs to prevent COVID-19.”
Dr. Mehra emphasized that a cardinal principle of practicing medicine is “first do no harm” and “even in situations where you believe a desperate disease calls for desperate measures, responsible physicians should take a step back and ask if we are doing harm, and until we can say we aren’t, I don’t think it’s wise to push something like this in the absence of good efficacy data.”
Dr. Ruschitzka added that those who are encouraging the use of these agents “should review their decision based on today’s data and let the science speak for itself.”
The study was supported by the William Harvey Distinguished Chair in Advanced Cardiovascular Medicine at Brigham and Women’s Hospital, Boston. Dr. Mehra reported personal fees from Abbott, Medtronic, Janssen, Mesoblast, Portola, Bayer, Baim Institute for Clinical Research, NuPulseCV, FineHeart, Leviticus, Roivant, and Triple Gene. Dr. Ruschitzka was paid for time spent as a committee member for clinical trials, advisory boards, other forms of consulting, and lectures or presentations; these payments were made directly to the University of Zürich and no personal payments were received in relation to these trials or other activities. Dr. Funck-Brentano, his coauthor, and Dr. Holtgrave declared no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
Newer anticoagulants linked to lower fracture risk in AFib
The direct oral anticoagulant (DOAC) drugs apixaban, dabigatran, and rivaroxaban are associated with a lower risk of osteoporotic fracture than is warfarin in patients with atrial fibrillation (AFib), according to a new retrospective analysis.
There was no difference in risk between individual DOAC medications.
The study drew from an EHR database of the Hong Kong Hospital Authority. It was led by Wallis C.Y. Lau, PhD, of the University of Hong Kong and appeared online May 19 in Annals of Internal Medicine.
Warfarin is suspected to contribute to osteoporotic fracturing in AFib patients, but previous studies returned mixed results. The more recently introduced DOACs were not tested for fracture risks, and it hasn’t been determined if individual DOACs have different risks. The question is even more important in AFib, in which patients are older and often have comorbidities that could predispose them to fractures.
The study included 23,515 patients with AFib who used anticoagulants. 3,241 used apixaban, 6,867 dabigatran, 3,866 rivaroxaban, and 9,541 used warfarin. The median follow-up was 423 days.
According to Cox proportional hazards model analyses, DOAC use was associated with fewer fractures than was warfarin (hazard ratio for apixaban vs. warfarin, 0.62; 95% confidence interval, 0.41-0.94; HR for dabigatran, 0.65; 95% CI, 0.49-0.86; HR for rivaroxaban, 0.52; 95% CI, 0.37-0.73). Subanalyses in men and women showed similar results (P for interaction >.05).
Head-to-head comparisons between individual DOACs yielded no statistically significant differences in osteoporotic fracture risk.
Although the findings couldn’t absolutely rule out a difference in osteoporotic fracture risk between different DOACs, the authors argue that any clinical significance would likely be small.
“Given the supportive evidence from experimental settings, findings from our study using clinical data, and the indirect evidence provided by the previous meta-analysis of randomized, controlled trials, there exists a compelling case for evaluating whether the risk for osteoporotic fractures should be considered at the point of prescribing an oral anticoagulant to minimize fracture risk,” the authors wrote.
The study is limited by the potential for residual confounding, the investigators noted.
The study was funded by the University of Hong Kong and University College London Strategic Partnership Fund.
SOURCE: Lau WCY et al. Ann Intern Med. 2020 May 19. doi: 10.7326/M19-3671.
The direct oral anticoagulant (DOAC) drugs apixaban, dabigatran, and rivaroxaban are associated with a lower risk of osteoporotic fracture than is warfarin in patients with atrial fibrillation (AFib), according to a new retrospective analysis.
There was no difference in risk between individual DOAC medications.
The study drew from an EHR database of the Hong Kong Hospital Authority. It was led by Wallis C.Y. Lau, PhD, of the University of Hong Kong and appeared online May 19 in Annals of Internal Medicine.
Warfarin is suspected to contribute to osteoporotic fracturing in AFib patients, but previous studies returned mixed results. The more recently introduced DOACs were not tested for fracture risks, and it hasn’t been determined if individual DOACs have different risks. The question is even more important in AFib, in which patients are older and often have comorbidities that could predispose them to fractures.
The study included 23,515 patients with AFib who used anticoagulants. 3,241 used apixaban, 6,867 dabigatran, 3,866 rivaroxaban, and 9,541 used warfarin. The median follow-up was 423 days.
According to Cox proportional hazards model analyses, DOAC use was associated with fewer fractures than was warfarin (hazard ratio for apixaban vs. warfarin, 0.62; 95% confidence interval, 0.41-0.94; HR for dabigatran, 0.65; 95% CI, 0.49-0.86; HR for rivaroxaban, 0.52; 95% CI, 0.37-0.73). Subanalyses in men and women showed similar results (P for interaction >.05).
Head-to-head comparisons between individual DOACs yielded no statistically significant differences in osteoporotic fracture risk.
Although the findings couldn’t absolutely rule out a difference in osteoporotic fracture risk between different DOACs, the authors argue that any clinical significance would likely be small.
“Given the supportive evidence from experimental settings, findings from our study using clinical data, and the indirect evidence provided by the previous meta-analysis of randomized, controlled trials, there exists a compelling case for evaluating whether the risk for osteoporotic fractures should be considered at the point of prescribing an oral anticoagulant to minimize fracture risk,” the authors wrote.
The study is limited by the potential for residual confounding, the investigators noted.
The study was funded by the University of Hong Kong and University College London Strategic Partnership Fund.
SOURCE: Lau WCY et al. Ann Intern Med. 2020 May 19. doi: 10.7326/M19-3671.
The direct oral anticoagulant (DOAC) drugs apixaban, dabigatran, and rivaroxaban are associated with a lower risk of osteoporotic fracture than is warfarin in patients with atrial fibrillation (AFib), according to a new retrospective analysis.
There was no difference in risk between individual DOAC medications.
The study drew from an EHR database of the Hong Kong Hospital Authority. It was led by Wallis C.Y. Lau, PhD, of the University of Hong Kong and appeared online May 19 in Annals of Internal Medicine.
Warfarin is suspected to contribute to osteoporotic fracturing in AFib patients, but previous studies returned mixed results. The more recently introduced DOACs were not tested for fracture risks, and it hasn’t been determined if individual DOACs have different risks. The question is even more important in AFib, in which patients are older and often have comorbidities that could predispose them to fractures.
The study included 23,515 patients with AFib who used anticoagulants. 3,241 used apixaban, 6,867 dabigatran, 3,866 rivaroxaban, and 9,541 used warfarin. The median follow-up was 423 days.
According to Cox proportional hazards model analyses, DOAC use was associated with fewer fractures than was warfarin (hazard ratio for apixaban vs. warfarin, 0.62; 95% confidence interval, 0.41-0.94; HR for dabigatran, 0.65; 95% CI, 0.49-0.86; HR for rivaroxaban, 0.52; 95% CI, 0.37-0.73). Subanalyses in men and women showed similar results (P for interaction >.05).
Head-to-head comparisons between individual DOACs yielded no statistically significant differences in osteoporotic fracture risk.
Although the findings couldn’t absolutely rule out a difference in osteoporotic fracture risk between different DOACs, the authors argue that any clinical significance would likely be small.
“Given the supportive evidence from experimental settings, findings from our study using clinical data, and the indirect evidence provided by the previous meta-analysis of randomized, controlled trials, there exists a compelling case for evaluating whether the risk for osteoporotic fractures should be considered at the point of prescribing an oral anticoagulant to minimize fracture risk,” the authors wrote.
The study is limited by the potential for residual confounding, the investigators noted.
The study was funded by the University of Hong Kong and University College London Strategic Partnership Fund.
SOURCE: Lau WCY et al. Ann Intern Med. 2020 May 19. doi: 10.7326/M19-3671.
FROM ANNALS OF INTERNAL MEDICINE
DOACs linked to lower fracture risk versus warfarin in AFib patients
results of a recent population-based cohort study show.
The choice of direct oral anticoagulant (DOAC) didn’t appear to have an impact, as each individual agent yielded a substantially lower risk of fracture versus the vitamin K antagonist, with risk reductions ranging from 38% to 48%, according to the study authors.
This is one of the latest reports to suggest DOACs could have an edge over warfarin for preventing fractures, providing new evidence that “may help inform the benefit risk assessment” when it comes to choosing an anticoagulant for a patient with atrial fibrillation (AFib) in the clinic, wrote the authors, led by Wallis C.Y. Lau, PhD, with the University College London.
“There exists a compelling case for evaluating whether the risk for osteoporotic fractures should be considered at the point of prescribing an oral anticoagulant to minimize fracture risk,” Dr. Lau and coauthors wrote in a report on the study that appears in Annals of Internal Medicine.
The case is especially compelling since fracture risk is “often neglected” when choosing an anticoagulant, the authors wrote. Surgeries to treat fracture are difficult because of the need for perioperative management of anticoagulation as “a balance between the risk for stroke and excessive bleeding must be achieved,” they added.
Based on these data, physicians should strongly consider DOACs as an alternative to vitamin K antagonists to reduce the risk of osteoporosis over the long term in patients with AFib, according to Victor Lawrence Roberts, MD, a Florida endocrinologist.
“Osteoporosis takes years, sometimes decades to develop, and if you then overlay warfarin on top of a readily evolving metabolic bone disease, you probably accelerate that process, said Dr. Roberts, professor of internal medicine at the University of Central Florida, Orlando, and editorial advisory board member of Internal Medicine News.
There’s a considerable amount of concerning preclinical data that warfarin could increase osteoporotic fracture risk. Of note, vitamin K antagonists modulate osteocalcin, a calcium-binding bone matrix protein, Dr. Roberts said.
“Osteocalcin is important for bone metabolism and health, and inhibiting osteocalcin will inhibit the ability to have a healthy bone matrix,” he explained.
The impact of anticoagulants on fracture risk is particularly relevant to patients with AFib, according to Dr. Lau and colleagues, who referenced one 2017 report showing a higher incidence of hip fracture among AFib patients versus those without AFib.
In their more recent study, Dr. Lau and colleagues reviewed electronic health records in a Hong Kong database for 23,515 older adults with a new diagnosis of AFib who received a new prescription of warfarin or DOACs including apixaban, dabigatran, or rivaroxaban.
DOAC use was consistently associated with a lower risk of osteoporotic fractures versus warfarin, regardless of the DOAC considered. The hazard ratios were 0.62 (95% confidence interval, 0.41-0.94) for apixaban, 0.65 (95% CI, 0.49-0.86) for dabigatran, and 0.52 (95% CI, 0.37-0.73) for rivaroxaban versus warfarin, the report showed.
Head-to-head comparisons between DOACS didn’t yield any statistically significant differences, though the analyses were underpowered in this respect, according to the investigators.
“This study can only rule out more than a twofold higher or a 50% lower relative risk for osteoporotic fractures between individual DOACs,” they wrote. “However, any absolute risk differences were small and would likely be of minor clinical significance.”
The reduced risk of fracture for DOACs versus warfarin was consistent in men and women with AFib, suggesting that women may particularly benefit from DOACs, given that they have a higher risk of fracture than men, the investigators added.
The results of this study suggest yet another benefit of DOACs over warfarin in patients with AFib, according to internist Noel Deep, MD, who is the chief medical officer of Aspirus Langlade Hospital in Antigo, Wisconsin.
“The lower risk of osteoporotic fractures with DOACS, in addition to other advantages such as lower risk of intracranial bleeding, once- or twice-daily consistent dosing, no dietary restrictions, and no blood tests to regulate the dose might be another reason that physicians may favor them over warfarin in older individuals requiring anticoagulation,” Dr. Deep said in an interview.
Results of this and several other recent studies may help in recommending DOACs to internal medicine patients who have a diagnosis of AFib requiring anticoagulation, according to Dr. Deep, who is also a physician at Aspirus Antigo Clinic and a member of Internal Medicine News’ editorial advisory board. These include a 2019 U.S.-based study of more than 167,000 patients with AFib (JAMA Intern Med. 2019;180[2]:245‐253) showing that use of DOACs, particularly apixaban, were linked to lower fracture risk versus warfarin use. Similarly, a Danish national registry study also published in 2019 showed that the absolute risk of osteoporotic fractures was low overall and significantly lower in patients who received DOACs (J Am Coll Cardiol. 2019;74[17]:2150-2158).
Funding for the study came from the University of Hong Kong and University College London Strategic Planning Fund. The study authors reported disclosures related to Bayer, Bristol-Myers Squibb, Pfizer, Janssen, Amgen, Takeda, IQVIA, and others.
SOURCE: Lau WCY et al. Ann Intern Med. 2020 May 18. doi: 10.7326/M19-3671.
results of a recent population-based cohort study show.
The choice of direct oral anticoagulant (DOAC) didn’t appear to have an impact, as each individual agent yielded a substantially lower risk of fracture versus the vitamin K antagonist, with risk reductions ranging from 38% to 48%, according to the study authors.
This is one of the latest reports to suggest DOACs could have an edge over warfarin for preventing fractures, providing new evidence that “may help inform the benefit risk assessment” when it comes to choosing an anticoagulant for a patient with atrial fibrillation (AFib) in the clinic, wrote the authors, led by Wallis C.Y. Lau, PhD, with the University College London.
“There exists a compelling case for evaluating whether the risk for osteoporotic fractures should be considered at the point of prescribing an oral anticoagulant to minimize fracture risk,” Dr. Lau and coauthors wrote in a report on the study that appears in Annals of Internal Medicine.
The case is especially compelling since fracture risk is “often neglected” when choosing an anticoagulant, the authors wrote. Surgeries to treat fracture are difficult because of the need for perioperative management of anticoagulation as “a balance between the risk for stroke and excessive bleeding must be achieved,” they added.
Based on these data, physicians should strongly consider DOACs as an alternative to vitamin K antagonists to reduce the risk of osteoporosis over the long term in patients with AFib, according to Victor Lawrence Roberts, MD, a Florida endocrinologist.
“Osteoporosis takes years, sometimes decades to develop, and if you then overlay warfarin on top of a readily evolving metabolic bone disease, you probably accelerate that process, said Dr. Roberts, professor of internal medicine at the University of Central Florida, Orlando, and editorial advisory board member of Internal Medicine News.
There’s a considerable amount of concerning preclinical data that warfarin could increase osteoporotic fracture risk. Of note, vitamin K antagonists modulate osteocalcin, a calcium-binding bone matrix protein, Dr. Roberts said.
“Osteocalcin is important for bone metabolism and health, and inhibiting osteocalcin will inhibit the ability to have a healthy bone matrix,” he explained.
The impact of anticoagulants on fracture risk is particularly relevant to patients with AFib, according to Dr. Lau and colleagues, who referenced one 2017 report showing a higher incidence of hip fracture among AFib patients versus those without AFib.
In their more recent study, Dr. Lau and colleagues reviewed electronic health records in a Hong Kong database for 23,515 older adults with a new diagnosis of AFib who received a new prescription of warfarin or DOACs including apixaban, dabigatran, or rivaroxaban.
DOAC use was consistently associated with a lower risk of osteoporotic fractures versus warfarin, regardless of the DOAC considered. The hazard ratios were 0.62 (95% confidence interval, 0.41-0.94) for apixaban, 0.65 (95% CI, 0.49-0.86) for dabigatran, and 0.52 (95% CI, 0.37-0.73) for rivaroxaban versus warfarin, the report showed.
Head-to-head comparisons between DOACS didn’t yield any statistically significant differences, though the analyses were underpowered in this respect, according to the investigators.
“This study can only rule out more than a twofold higher or a 50% lower relative risk for osteoporotic fractures between individual DOACs,” they wrote. “However, any absolute risk differences were small and would likely be of minor clinical significance.”
The reduced risk of fracture for DOACs versus warfarin was consistent in men and women with AFib, suggesting that women may particularly benefit from DOACs, given that they have a higher risk of fracture than men, the investigators added.
The results of this study suggest yet another benefit of DOACs over warfarin in patients with AFib, according to internist Noel Deep, MD, who is the chief medical officer of Aspirus Langlade Hospital in Antigo, Wisconsin.
“The lower risk of osteoporotic fractures with DOACS, in addition to other advantages such as lower risk of intracranial bleeding, once- or twice-daily consistent dosing, no dietary restrictions, and no blood tests to regulate the dose might be another reason that physicians may favor them over warfarin in older individuals requiring anticoagulation,” Dr. Deep said in an interview.
Results of this and several other recent studies may help in recommending DOACs to internal medicine patients who have a diagnosis of AFib requiring anticoagulation, according to Dr. Deep, who is also a physician at Aspirus Antigo Clinic and a member of Internal Medicine News’ editorial advisory board. These include a 2019 U.S.-based study of more than 167,000 patients with AFib (JAMA Intern Med. 2019;180[2]:245‐253) showing that use of DOACs, particularly apixaban, were linked to lower fracture risk versus warfarin use. Similarly, a Danish national registry study also published in 2019 showed that the absolute risk of osteoporotic fractures was low overall and significantly lower in patients who received DOACs (J Am Coll Cardiol. 2019;74[17]:2150-2158).
Funding for the study came from the University of Hong Kong and University College London Strategic Planning Fund. The study authors reported disclosures related to Bayer, Bristol-Myers Squibb, Pfizer, Janssen, Amgen, Takeda, IQVIA, and others.
SOURCE: Lau WCY et al. Ann Intern Med. 2020 May 18. doi: 10.7326/M19-3671.
results of a recent population-based cohort study show.
The choice of direct oral anticoagulant (DOAC) didn’t appear to have an impact, as each individual agent yielded a substantially lower risk of fracture versus the vitamin K antagonist, with risk reductions ranging from 38% to 48%, according to the study authors.
This is one of the latest reports to suggest DOACs could have an edge over warfarin for preventing fractures, providing new evidence that “may help inform the benefit risk assessment” when it comes to choosing an anticoagulant for a patient with atrial fibrillation (AFib) in the clinic, wrote the authors, led by Wallis C.Y. Lau, PhD, with the University College London.
“There exists a compelling case for evaluating whether the risk for osteoporotic fractures should be considered at the point of prescribing an oral anticoagulant to minimize fracture risk,” Dr. Lau and coauthors wrote in a report on the study that appears in Annals of Internal Medicine.
The case is especially compelling since fracture risk is “often neglected” when choosing an anticoagulant, the authors wrote. Surgeries to treat fracture are difficult because of the need for perioperative management of anticoagulation as “a balance between the risk for stroke and excessive bleeding must be achieved,” they added.
Based on these data, physicians should strongly consider DOACs as an alternative to vitamin K antagonists to reduce the risk of osteoporosis over the long term in patients with AFib, according to Victor Lawrence Roberts, MD, a Florida endocrinologist.
“Osteoporosis takes years, sometimes decades to develop, and if you then overlay warfarin on top of a readily evolving metabolic bone disease, you probably accelerate that process, said Dr. Roberts, professor of internal medicine at the University of Central Florida, Orlando, and editorial advisory board member of Internal Medicine News.
There’s a considerable amount of concerning preclinical data that warfarin could increase osteoporotic fracture risk. Of note, vitamin K antagonists modulate osteocalcin, a calcium-binding bone matrix protein, Dr. Roberts said.
“Osteocalcin is important for bone metabolism and health, and inhibiting osteocalcin will inhibit the ability to have a healthy bone matrix,” he explained.
The impact of anticoagulants on fracture risk is particularly relevant to patients with AFib, according to Dr. Lau and colleagues, who referenced one 2017 report showing a higher incidence of hip fracture among AFib patients versus those without AFib.
In their more recent study, Dr. Lau and colleagues reviewed electronic health records in a Hong Kong database for 23,515 older adults with a new diagnosis of AFib who received a new prescription of warfarin or DOACs including apixaban, dabigatran, or rivaroxaban.
DOAC use was consistently associated with a lower risk of osteoporotic fractures versus warfarin, regardless of the DOAC considered. The hazard ratios were 0.62 (95% confidence interval, 0.41-0.94) for apixaban, 0.65 (95% CI, 0.49-0.86) for dabigatran, and 0.52 (95% CI, 0.37-0.73) for rivaroxaban versus warfarin, the report showed.
Head-to-head comparisons between DOACS didn’t yield any statistically significant differences, though the analyses were underpowered in this respect, according to the investigators.
“This study can only rule out more than a twofold higher or a 50% lower relative risk for osteoporotic fractures between individual DOACs,” they wrote. “However, any absolute risk differences were small and would likely be of minor clinical significance.”
The reduced risk of fracture for DOACs versus warfarin was consistent in men and women with AFib, suggesting that women may particularly benefit from DOACs, given that they have a higher risk of fracture than men, the investigators added.
The results of this study suggest yet another benefit of DOACs over warfarin in patients with AFib, according to internist Noel Deep, MD, who is the chief medical officer of Aspirus Langlade Hospital in Antigo, Wisconsin.
“The lower risk of osteoporotic fractures with DOACS, in addition to other advantages such as lower risk of intracranial bleeding, once- or twice-daily consistent dosing, no dietary restrictions, and no blood tests to regulate the dose might be another reason that physicians may favor them over warfarin in older individuals requiring anticoagulation,” Dr. Deep said in an interview.
Results of this and several other recent studies may help in recommending DOACs to internal medicine patients who have a diagnosis of AFib requiring anticoagulation, according to Dr. Deep, who is also a physician at Aspirus Antigo Clinic and a member of Internal Medicine News’ editorial advisory board. These include a 2019 U.S.-based study of more than 167,000 patients with AFib (JAMA Intern Med. 2019;180[2]:245‐253) showing that use of DOACs, particularly apixaban, were linked to lower fracture risk versus warfarin use. Similarly, a Danish national registry study also published in 2019 showed that the absolute risk of osteoporotic fractures was low overall and significantly lower in patients who received DOACs (J Am Coll Cardiol. 2019;74[17]:2150-2158).
Funding for the study came from the University of Hong Kong and University College London Strategic Planning Fund. The study authors reported disclosures related to Bayer, Bristol-Myers Squibb, Pfizer, Janssen, Amgen, Takeda, IQVIA, and others.
SOURCE: Lau WCY et al. Ann Intern Med. 2020 May 18. doi: 10.7326/M19-3671.
FROM ANNALS OF INTERNAL MEDICINE
Leadless pacemaker shown safe in older, sicker patients
A leadless right-ventricular pacemaker continued to show an edge over conventional transvenous pacemakers by triggering a substantially reduced rate of complications during the 6 months following placement in a review of more than 10,000 Medicare patients treated over 2 years.
The “largest leadless pacemaker cohort to date” showed that in propensity score–matched cohorts, the 3,276 patients who received the Micra leadless transcatheter pacemaker during routine management and were followed for 6 months had a 3.3% rate of total complications, compared with a 9.4% rate among 7,256 patients who received a conventional VVI pacemaker with a transvenous lead, a statistically significant 66% relative risk reduction, Jonathan P. Piccini, MD, said at the annual scientific sessions of the Heart Rhythm Society, held online because of COVID-19.
The 66% reduced rate of complications – both acutely and with further follow-up – was similar to the complication reductions seen with Micra, compared with historical controls who received transvenous single-chamber pacemakers in both the pivotal study for the device (Heart Rhythm. 2017 May 1;14[3]:702-9) and in a postapproval registry study (Heart Rhythm. 2018 Dec 1;15[12]:1800-7). However, the newly reported advantage came in a population that was notably older and had significantly more comorbidities than in the prior leadless pacemaker studies, said Dr. Piccini, a cardiac electrophysiologist at Duke University, Durham, N.C.
The new Medicare data “tell us that physicians are reaching for these devices [leadless pacemakers] in patients with more comorbidities and a higher risk for complications to give them a [device with] better safety profile,” he said during a press briefing. “At Duke, and I suspect at other centers, when a patients is eligible for a leadless pacemaker that’s the preferred option.”
However, Dr. Piccini cited three examples of the small proportion of patients who are appropriate for the type of pacing the leadless pacemaker supplies but would be better candidates for a device with a transvenous lead: patients who failed treatment with a initial leadless pacemaker and have no suitable alternative subcutaneous spot to place the replacement device in a stable way, those with severe right ventricular enlargement that interferes with optimal placement, and those who don’t currently meet criteria for biventricular pacing but appear likely to switch to that pacing mode in the near term.
The 66% relative reduction in complications was “impressive; I hope this will be a message,” commented Nassir F. Marrouche, MD, a cardiac electrophysiologist and professor of medicine at Tulane University, New Orleans. Importantly, this reduced complication rate occurred in a real-world population that was sicker than any patient group previously studied with the device, he noted as a designated discussant for the report.
But the report’s second designated discussant, Roderick Tung, MD, highlighted some caveats when interpreting the lower complication rate with the leadless device compared with historical controls. He cited the absence of any episodes of pneumothorax among the patients reviewed by Dr. Piccini who received a leadless pacemaker, compared with a 5% rate among the control patients who had received a device with a transvenous lead, a major driver of the overall difference in complication rates. This difference “may not be relevant to operators who use either an axillary extrathoracic vein route for lead placement or a cephalic vein approach,” said Dr. Tung, director of cardiac electrophysiology at the University of Chicago. “There should not be a 5% rate of pneumothorax when implanting a VVI device.” The results reported by Dr. Piccini have the advantages of coming from many patients and from real-world practice, he acknowledged, but interpretation is limited by the lack of a randomized control group and the outsized impact of pneumothorax complications on the safety comparison.
The other major component of the 6-month complication tally was device-related events, which were twice as common in the historical controls who received a transvenous lead at a rate of 3.4%. The sole 6-month event more common among the patients who received a leadless pacemaker was pericarditis, at a rate of 1.3% in the Micra group and 0.5% in the transvenous lead controls, Dr. Piccini reported. The 6-month rate of device revisions was 1.7% with the leadless device and 2.8% with transvenous lead pacemakers, a difference that was not statistically significant. The two treatment arms had virtually identical 6-month mortality rates.
The rate of acute complications during the first 30 days after implant was also virtually the same in the two study arms. Patient who received the leadless device had significantly more puncture-site events, at a rate of 1.2%, and significantly more cardiac effusions or perforations, at a rate of 0.8%. The historical control patients who received devices with transvenous leads had significantly more device-related complications after 30 days, a 2.5% rate.
The 30-day cohorts examined had larger numbers of patients than at 6 months, 5,746 leadless pacemaker recipients and 9,662 matched historical controls who had received a transvenous lead pacemaker. The clinical and demographic profile of the 30-day cohort who received the leadless pacemaker highlighted the sicker nature of these patients compared with earlier studies of the device. They were an average age of 79 years, compared with average ages of 76 years in the two prior Micra studies, and they also had double the prevalence of coronary disease, triple the prevalence of heart failure, more than twice the rate of chronic obstructive pulmonary disease, and almost twice the prevalence of diabetes.
During the period examined in this report from Micra CED (Longitudinal Coverage With Evidence Development Study on Micra Leadless Pacemakers), in 2017-2018, the leadless pacemaker’s initial approved indications were for a circumscribed portion of the overall patient population that needs pacing. Essentially, they were elderly patients with persistent atrial fibrillation who only need ventricular pacing, roughly 15% of the overall cohort of pacing candidates. In January 2020, the FDA added an indication for high-grade atrioventricular block, an expanded population of candidates that roughly tripled the number of potentially appropriate recipients, said Larry A. Chinitz, MD, a cardiac electrophysiologist and a coinvestigator on some of the studies that led to the new indication, in an interview at the time of the revised labeling.
The study was sponsored by Medtronic, which markets the Micra leadless pacemaker. Dr. Piccini has received honoraria from Medtronic and several other companies. Dr. Marrouche has been a consultant to Medtronic as well as to Biosense Webster, Biotronik, Cardiac Design, and Preventice, and has received research funding from Abbott, Biosense Webster, Boston Scientific, and GE Healthcare. Dr. Tung has been a speaker on behalf of Abbott, Boston Scientific, and Biosense Webster. Dr. Chinitz has received fees and fellowship support from Medtronic, and has also received fees from Abbott, Biosense Webster, Biotronik, and Pfizer.
SOURCE: Piccini JP et al. Heart Rhythm 2020, Abstract D-LBCT04-01.
A leadless right-ventricular pacemaker continued to show an edge over conventional transvenous pacemakers by triggering a substantially reduced rate of complications during the 6 months following placement in a review of more than 10,000 Medicare patients treated over 2 years.
The “largest leadless pacemaker cohort to date” showed that in propensity score–matched cohorts, the 3,276 patients who received the Micra leadless transcatheter pacemaker during routine management and were followed for 6 months had a 3.3% rate of total complications, compared with a 9.4% rate among 7,256 patients who received a conventional VVI pacemaker with a transvenous lead, a statistically significant 66% relative risk reduction, Jonathan P. Piccini, MD, said at the annual scientific sessions of the Heart Rhythm Society, held online because of COVID-19.
The 66% reduced rate of complications – both acutely and with further follow-up – was similar to the complication reductions seen with Micra, compared with historical controls who received transvenous single-chamber pacemakers in both the pivotal study for the device (Heart Rhythm. 2017 May 1;14[3]:702-9) and in a postapproval registry study (Heart Rhythm. 2018 Dec 1;15[12]:1800-7). However, the newly reported advantage came in a population that was notably older and had significantly more comorbidities than in the prior leadless pacemaker studies, said Dr. Piccini, a cardiac electrophysiologist at Duke University, Durham, N.C.
The new Medicare data “tell us that physicians are reaching for these devices [leadless pacemakers] in patients with more comorbidities and a higher risk for complications to give them a [device with] better safety profile,” he said during a press briefing. “At Duke, and I suspect at other centers, when a patients is eligible for a leadless pacemaker that’s the preferred option.”
However, Dr. Piccini cited three examples of the small proportion of patients who are appropriate for the type of pacing the leadless pacemaker supplies but would be better candidates for a device with a transvenous lead: patients who failed treatment with a initial leadless pacemaker and have no suitable alternative subcutaneous spot to place the replacement device in a stable way, those with severe right ventricular enlargement that interferes with optimal placement, and those who don’t currently meet criteria for biventricular pacing but appear likely to switch to that pacing mode in the near term.
The 66% relative reduction in complications was “impressive; I hope this will be a message,” commented Nassir F. Marrouche, MD, a cardiac electrophysiologist and professor of medicine at Tulane University, New Orleans. Importantly, this reduced complication rate occurred in a real-world population that was sicker than any patient group previously studied with the device, he noted as a designated discussant for the report.
But the report’s second designated discussant, Roderick Tung, MD, highlighted some caveats when interpreting the lower complication rate with the leadless device compared with historical controls. He cited the absence of any episodes of pneumothorax among the patients reviewed by Dr. Piccini who received a leadless pacemaker, compared with a 5% rate among the control patients who had received a device with a transvenous lead, a major driver of the overall difference in complication rates. This difference “may not be relevant to operators who use either an axillary extrathoracic vein route for lead placement or a cephalic vein approach,” said Dr. Tung, director of cardiac electrophysiology at the University of Chicago. “There should not be a 5% rate of pneumothorax when implanting a VVI device.” The results reported by Dr. Piccini have the advantages of coming from many patients and from real-world practice, he acknowledged, but interpretation is limited by the lack of a randomized control group and the outsized impact of pneumothorax complications on the safety comparison.
The other major component of the 6-month complication tally was device-related events, which were twice as common in the historical controls who received a transvenous lead at a rate of 3.4%. The sole 6-month event more common among the patients who received a leadless pacemaker was pericarditis, at a rate of 1.3% in the Micra group and 0.5% in the transvenous lead controls, Dr. Piccini reported. The 6-month rate of device revisions was 1.7% with the leadless device and 2.8% with transvenous lead pacemakers, a difference that was not statistically significant. The two treatment arms had virtually identical 6-month mortality rates.
The rate of acute complications during the first 30 days after implant was also virtually the same in the two study arms. Patient who received the leadless device had significantly more puncture-site events, at a rate of 1.2%, and significantly more cardiac effusions or perforations, at a rate of 0.8%. The historical control patients who received devices with transvenous leads had significantly more device-related complications after 30 days, a 2.5% rate.
The 30-day cohorts examined had larger numbers of patients than at 6 months, 5,746 leadless pacemaker recipients and 9,662 matched historical controls who had received a transvenous lead pacemaker. The clinical and demographic profile of the 30-day cohort who received the leadless pacemaker highlighted the sicker nature of these patients compared with earlier studies of the device. They were an average age of 79 years, compared with average ages of 76 years in the two prior Micra studies, and they also had double the prevalence of coronary disease, triple the prevalence of heart failure, more than twice the rate of chronic obstructive pulmonary disease, and almost twice the prevalence of diabetes.
During the period examined in this report from Micra CED (Longitudinal Coverage With Evidence Development Study on Micra Leadless Pacemakers), in 2017-2018, the leadless pacemaker’s initial approved indications were for a circumscribed portion of the overall patient population that needs pacing. Essentially, they were elderly patients with persistent atrial fibrillation who only need ventricular pacing, roughly 15% of the overall cohort of pacing candidates. In January 2020, the FDA added an indication for high-grade atrioventricular block, an expanded population of candidates that roughly tripled the number of potentially appropriate recipients, said Larry A. Chinitz, MD, a cardiac electrophysiologist and a coinvestigator on some of the studies that led to the new indication, in an interview at the time of the revised labeling.
The study was sponsored by Medtronic, which markets the Micra leadless pacemaker. Dr. Piccini has received honoraria from Medtronic and several other companies. Dr. Marrouche has been a consultant to Medtronic as well as to Biosense Webster, Biotronik, Cardiac Design, and Preventice, and has received research funding from Abbott, Biosense Webster, Boston Scientific, and GE Healthcare. Dr. Tung has been a speaker on behalf of Abbott, Boston Scientific, and Biosense Webster. Dr. Chinitz has received fees and fellowship support from Medtronic, and has also received fees from Abbott, Biosense Webster, Biotronik, and Pfizer.
SOURCE: Piccini JP et al. Heart Rhythm 2020, Abstract D-LBCT04-01.
A leadless right-ventricular pacemaker continued to show an edge over conventional transvenous pacemakers by triggering a substantially reduced rate of complications during the 6 months following placement in a review of more than 10,000 Medicare patients treated over 2 years.
The “largest leadless pacemaker cohort to date” showed that in propensity score–matched cohorts, the 3,276 patients who received the Micra leadless transcatheter pacemaker during routine management and were followed for 6 months had a 3.3% rate of total complications, compared with a 9.4% rate among 7,256 patients who received a conventional VVI pacemaker with a transvenous lead, a statistically significant 66% relative risk reduction, Jonathan P. Piccini, MD, said at the annual scientific sessions of the Heart Rhythm Society, held online because of COVID-19.
The 66% reduced rate of complications – both acutely and with further follow-up – was similar to the complication reductions seen with Micra, compared with historical controls who received transvenous single-chamber pacemakers in both the pivotal study for the device (Heart Rhythm. 2017 May 1;14[3]:702-9) and in a postapproval registry study (Heart Rhythm. 2018 Dec 1;15[12]:1800-7). However, the newly reported advantage came in a population that was notably older and had significantly more comorbidities than in the prior leadless pacemaker studies, said Dr. Piccini, a cardiac electrophysiologist at Duke University, Durham, N.C.
The new Medicare data “tell us that physicians are reaching for these devices [leadless pacemakers] in patients with more comorbidities and a higher risk for complications to give them a [device with] better safety profile,” he said during a press briefing. “At Duke, and I suspect at other centers, when a patients is eligible for a leadless pacemaker that’s the preferred option.”
However, Dr. Piccini cited three examples of the small proportion of patients who are appropriate for the type of pacing the leadless pacemaker supplies but would be better candidates for a device with a transvenous lead: patients who failed treatment with a initial leadless pacemaker and have no suitable alternative subcutaneous spot to place the replacement device in a stable way, those with severe right ventricular enlargement that interferes with optimal placement, and those who don’t currently meet criteria for biventricular pacing but appear likely to switch to that pacing mode in the near term.
The 66% relative reduction in complications was “impressive; I hope this will be a message,” commented Nassir F. Marrouche, MD, a cardiac electrophysiologist and professor of medicine at Tulane University, New Orleans. Importantly, this reduced complication rate occurred in a real-world population that was sicker than any patient group previously studied with the device, he noted as a designated discussant for the report.
But the report’s second designated discussant, Roderick Tung, MD, highlighted some caveats when interpreting the lower complication rate with the leadless device compared with historical controls. He cited the absence of any episodes of pneumothorax among the patients reviewed by Dr. Piccini who received a leadless pacemaker, compared with a 5% rate among the control patients who had received a device with a transvenous lead, a major driver of the overall difference in complication rates. This difference “may not be relevant to operators who use either an axillary extrathoracic vein route for lead placement or a cephalic vein approach,” said Dr. Tung, director of cardiac electrophysiology at the University of Chicago. “There should not be a 5% rate of pneumothorax when implanting a VVI device.” The results reported by Dr. Piccini have the advantages of coming from many patients and from real-world practice, he acknowledged, but interpretation is limited by the lack of a randomized control group and the outsized impact of pneumothorax complications on the safety comparison.
The other major component of the 6-month complication tally was device-related events, which were twice as common in the historical controls who received a transvenous lead at a rate of 3.4%. The sole 6-month event more common among the patients who received a leadless pacemaker was pericarditis, at a rate of 1.3% in the Micra group and 0.5% in the transvenous lead controls, Dr. Piccini reported. The 6-month rate of device revisions was 1.7% with the leadless device and 2.8% with transvenous lead pacemakers, a difference that was not statistically significant. The two treatment arms had virtually identical 6-month mortality rates.
The rate of acute complications during the first 30 days after implant was also virtually the same in the two study arms. Patient who received the leadless device had significantly more puncture-site events, at a rate of 1.2%, and significantly more cardiac effusions or perforations, at a rate of 0.8%. The historical control patients who received devices with transvenous leads had significantly more device-related complications after 30 days, a 2.5% rate.
The 30-day cohorts examined had larger numbers of patients than at 6 months, 5,746 leadless pacemaker recipients and 9,662 matched historical controls who had received a transvenous lead pacemaker. The clinical and demographic profile of the 30-day cohort who received the leadless pacemaker highlighted the sicker nature of these patients compared with earlier studies of the device. They were an average age of 79 years, compared with average ages of 76 years in the two prior Micra studies, and they also had double the prevalence of coronary disease, triple the prevalence of heart failure, more than twice the rate of chronic obstructive pulmonary disease, and almost twice the prevalence of diabetes.
During the period examined in this report from Micra CED (Longitudinal Coverage With Evidence Development Study on Micra Leadless Pacemakers), in 2017-2018, the leadless pacemaker’s initial approved indications were for a circumscribed portion of the overall patient population that needs pacing. Essentially, they were elderly patients with persistent atrial fibrillation who only need ventricular pacing, roughly 15% of the overall cohort of pacing candidates. In January 2020, the FDA added an indication for high-grade atrioventricular block, an expanded population of candidates that roughly tripled the number of potentially appropriate recipients, said Larry A. Chinitz, MD, a cardiac electrophysiologist and a coinvestigator on some of the studies that led to the new indication, in an interview at the time of the revised labeling.
The study was sponsored by Medtronic, which markets the Micra leadless pacemaker. Dr. Piccini has received honoraria from Medtronic and several other companies. Dr. Marrouche has been a consultant to Medtronic as well as to Biosense Webster, Biotronik, Cardiac Design, and Preventice, and has received research funding from Abbott, Biosense Webster, Boston Scientific, and GE Healthcare. Dr. Tung has been a speaker on behalf of Abbott, Boston Scientific, and Biosense Webster. Dr. Chinitz has received fees and fellowship support from Medtronic, and has also received fees from Abbott, Biosense Webster, Biotronik, and Pfizer.
SOURCE: Piccini JP et al. Heart Rhythm 2020, Abstract D-LBCT04-01.
FROM HEART RHYTHM 2020