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Clinical trials: Top priority for long COVID
The Centers for Disease Control and Prevention and the U.S. Census Bureau estimate that 6.1% of the U.S. adult population is living with long COVID, with millions more debilitated worldwide. The demand for substantial treatment is enormous, but the urgency to fund and begin the necessary range of clinical trials has not met the severity of the problem.
While trials are slowly beginning to happen, the treatment choices and trial design require crucial nuances and understanding of viral-onset illnesses, and few research groups are creating strong trials that fully reflect the complexities of this landscape.
These recommendations recognize that roughly half of long COVID patients have new-onset myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and dysautonomia from COVID, which must be at the forefront of how trials are designed and conducted, and are additionally based on the current hypotheses about long COVID’s pathophysiologies.
1: Drugs proposed by experts in postviral fields should be prioritized
Upward of 50 drugs for viral-onset conditions like ME/CFS, dysautonomia, AIDS, and others have been waiting for years to go to trial, but have not had the funding to do so.
Treatments proposed by experts in viral-onset illnesses (such as ME/CFS and dysautonomia) should be prioritized (PM R. 2022 Oct;14[10]:1270-91), as outside researchers are not familiar with these fields and their potential treatment options.
2: Drugs targeting a wide range of mechanisms should be trialed
Treatments that should be trialed include anticoagulants/antiplatelets for clotting and vascular functioning, immunomodulators including JAK-STAT inhibitors, COVID-specific antivirals and antivirals against reactivated herpesviruses (Valcyte, Valacyclovir, EBV vaccine).
Other options include prescription mast cell stabilizers (ketotifen, cromolyn sodium), drugs that regulate microglial activation (low-dose naltrexone, low-dose aripiprazole), anti-CGRP medications, beta-blockers, and intravenous immunoglobulin.
Others include medications that target mitochondrial dysfunction; ivabradine; pyridostigmine;, DRP1 inhibitors; supplements showing success in patient communities including lactoferrin, ubiquinone, and nattokinase; and therapies targeting glymphatic/lymphatic dysfunction, microbiome therapies, and therapeutic peptides.
3: Use appropriate long COVID subtypes
Long COVID is an umbrella term that encompasses multiple new-onset and worsened conditions and symptoms after COVID. Roughly half of long COVID patients likely meet the criteria for ME/CFS and/or dysautonomia. Others may have new-onset diabetes, major clotting events, lung damage, neurological disorders, loss of smell or taste, and other manifestations.
Patients in different categories likely have different responses to treatments. It’s critical to identify appropriate subtypes for each trial, ideally performing detailed analyses to identify the treatments that work best, and don’t, for each subtype.
4: Behavioral treatments, especially those that have harmed similar populations, should not be trialed
Behavioral treatments including exercise, graded exercise therapy (GET), and cognitive-behavioral therapy (CBT) should not be trialed, let alone prioritized, for long COVID.
In patients with postexertional malaise (PEM), one of the most common long COVID symptoms, exercise is actively harmful and causes dysfunctional metabolic patterns, cardiac preload failure, impaired systemic oxygen extraction, and more. GET and CBT have failed similar populations , and exercise is explicitly contraindicated by the World Health Organization, the British National Institute for Health and Care Excellence, the CDC, and other organizations.
Resources should instead be put toward the wide range of medications that have not yet adequately undergone clinical trials.
5: PCR and antibody tests should not be used as inclusion criteria for trial participants
Only an estimated 1%-3% of cases in the first wave of COVID were documented, and the CDC estimates that only 25% of cases through September 2021 were documented. Similarly, antibody tests are unreliable to determine past infection, as roughly a third of patients don’t seroconvert, and a similar proportion serorevert within a few months. Using polymerase chain reaction (PCR) and antibody testing to determine who should be included in clinical trials limits who is eligible to participate in research, particularly those who have been ill for longer. Additionally, the majority of those who serorevert are women, so using antibody tests for inclusion introduces a selection bias and may miss mechanisms of immune system functioning that are part of long COVID.
PCR tests also have high false-negative rates and requiring them in research excludes people with lower viral loads with long COVID, which would confound findings.
These issues with testing also lead to COVID-infected people accidentally being included in control groups, which ruins the credibility of the research findings completely.
6: Include comparator groups
There are several common diagnoses that occur in people with long COVID, including ME/CFS, postural orthostatic tachycardia syndrome, small-fiber neuropathy, mast cell activation syndrome, and Ehlers-Danlos syndrome.
Identifying people with these conditions within the trial cohort improves research across all fields, benefiting all groups, and helps clarify what types of patients benefit most from certain medications.
7: Identify the right endpoints; avoid the wrong ones
Even though our understanding of the pathophysiology of long COVID is still evolving, it’s still possible to do clinical trials by identifying strong endpoints and outcome measures.
Several tools have been designed for viral-onset conditions and should be used alongside other endpoints. Postexertional malaise and autonomic symptoms, which are some of the most common symptoms of long COVID, can be measured with the validated DSQ-PEM and COMPASS-31, respectively. Tools for cognitive dysfunction trials should capture specific and common types of impairment, like processing speed.
Endpoints should be high-impact and aim for large improvements that have clinical significance over small improvements that do not have clinical significance.
Objective tests should be incorporated where possible; some to consider include natural killer cell functioning, cerebral blood flow, T-cell functioning, levels of reactivated herpesviruses, blood lactate levels, and microclots, as testing becomes available.
Mental health outcomes shouldn’t be primary endpoints, except where a trial is targeting a specific mental health condition because of COVID (for example, premenstrual dysphoric disorder).
If mental health conditions are tracked secondarily, it’s vital not to use questionnaires that include physical symptoms like fatigue, difficulty concentrating, difficulty sleeping, or palpitations, as these artificially increase depression and anxiety scores in chronically ill respondents. Tools that include physical symptoms (Patient Health Questionnaire–9, Beck Anxiety Inventory, Beck Depression Inventory) can be replaced with scales like the PHQ-2, General Anxiety Disorder–7, Hospital Anxiety and Depression Scale, or PROMIS-29 subscales.
Because certain cytokines and other inflammatory markers may naturally decrease over time without corresponding improvement in the ME/CFS subtype, caution should be taken when using cytokines as endpoints.
8: Consider enrollment and objectives carefully
A proportion of people with long COVID will recover in the early months after infection. Ideally, clinical trials will primarily study treatments in patients who have been ill 6 months or longer, as some natural recovery will happen before that can bias studies.
But where resources are abundant, it is ideal for trials to additionally look at whether the treatments can help patients in the early months recover and prevent progression to the later stage.
9: Tracking illness duration is crucial
Research from ME/CFS shows that there may be an immune change in the first few years of the illness, where cytokines decrease without any corresponding change in symptom improvement.
Because of this and the possibility that other markers follow the same pattern, disease duration should be a core feature of all analyses and trial designs. Trial outcomes should be designed to answer the question of whether the medication helps patients at different durations of illness.
10: Prioritize patient populations less likely to recover without intervention
Some long COVID phenotypes seem less likely to recover without intervention. Trials should take care to focus on these patient populations, which include those with neurologic symptoms and those meeting ME/CFS criteria.
11: Account for the relapsing/remitting nature
Outcome measures need to be assessed in a way that can distinguish a temporary remission, which is part of the natural course of the disease, from a permanent cure.
Factors that can contribute to the relapsing/remitting nature include physical and cognitive postexertional malaise, menstrual cycle changes, and seasonal changes.
12: Trial participants should reflect the diversity of the long COVID population
Certain demographics are more likely to be affected by acute and long COVID and need to be appropriately recruited and reflected in research, including in patient engagement.
Trials must include high numbers of Hispanic/Latinx, Black, and indigenous communities, queer and transgender populations, and women. Trial materials and design need to incorporate linguistic diversity in addition to racial/ethnic diversity.
Upward of 75% of long COVID cases happen after mild acute cases; clinical researchers should ensure that nonhospitalized patients make up the bulk of trial participants.
13: Utilize meaningful engagement of patients, especially in treatment selection and study design
Meaningful patient engagement means engaging multiple patients at every step of the trial process, from treatment selection to study design to analysis to communication of the results.
Patient experiences are extremely valuable and contain information that researchers may not be familiar with, including the nature and patterns of the illness, insights into possible treatments, and barriers to documentation and care that may also impact research. Tapping into those patient experiences will make trials stronger.
Overall, the landscape of long COVID clinical trials is ripe for discovery, and researchers choosing to go down this path will be deeply appreciated by the patient community.
Hannah Davis is a long COVID patient-researcher and cofounder of the Patient-Led Research Collaborative, an organization studying the long-term effects of COVID.
A version of this article first appeared on Medscape.com.
The Centers for Disease Control and Prevention and the U.S. Census Bureau estimate that 6.1% of the U.S. adult population is living with long COVID, with millions more debilitated worldwide. The demand for substantial treatment is enormous, but the urgency to fund and begin the necessary range of clinical trials has not met the severity of the problem.
While trials are slowly beginning to happen, the treatment choices and trial design require crucial nuances and understanding of viral-onset illnesses, and few research groups are creating strong trials that fully reflect the complexities of this landscape.
These recommendations recognize that roughly half of long COVID patients have new-onset myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and dysautonomia from COVID, which must be at the forefront of how trials are designed and conducted, and are additionally based on the current hypotheses about long COVID’s pathophysiologies.
1: Drugs proposed by experts in postviral fields should be prioritized
Upward of 50 drugs for viral-onset conditions like ME/CFS, dysautonomia, AIDS, and others have been waiting for years to go to trial, but have not had the funding to do so.
Treatments proposed by experts in viral-onset illnesses (such as ME/CFS and dysautonomia) should be prioritized (PM R. 2022 Oct;14[10]:1270-91), as outside researchers are not familiar with these fields and their potential treatment options.
2: Drugs targeting a wide range of mechanisms should be trialed
Treatments that should be trialed include anticoagulants/antiplatelets for clotting and vascular functioning, immunomodulators including JAK-STAT inhibitors, COVID-specific antivirals and antivirals against reactivated herpesviruses (Valcyte, Valacyclovir, EBV vaccine).
Other options include prescription mast cell stabilizers (ketotifen, cromolyn sodium), drugs that regulate microglial activation (low-dose naltrexone, low-dose aripiprazole), anti-CGRP medications, beta-blockers, and intravenous immunoglobulin.
Others include medications that target mitochondrial dysfunction; ivabradine; pyridostigmine;, DRP1 inhibitors; supplements showing success in patient communities including lactoferrin, ubiquinone, and nattokinase; and therapies targeting glymphatic/lymphatic dysfunction, microbiome therapies, and therapeutic peptides.
3: Use appropriate long COVID subtypes
Long COVID is an umbrella term that encompasses multiple new-onset and worsened conditions and symptoms after COVID. Roughly half of long COVID patients likely meet the criteria for ME/CFS and/or dysautonomia. Others may have new-onset diabetes, major clotting events, lung damage, neurological disorders, loss of smell or taste, and other manifestations.
Patients in different categories likely have different responses to treatments. It’s critical to identify appropriate subtypes for each trial, ideally performing detailed analyses to identify the treatments that work best, and don’t, for each subtype.
4: Behavioral treatments, especially those that have harmed similar populations, should not be trialed
Behavioral treatments including exercise, graded exercise therapy (GET), and cognitive-behavioral therapy (CBT) should not be trialed, let alone prioritized, for long COVID.
In patients with postexertional malaise (PEM), one of the most common long COVID symptoms, exercise is actively harmful and causes dysfunctional metabolic patterns, cardiac preload failure, impaired systemic oxygen extraction, and more. GET and CBT have failed similar populations , and exercise is explicitly contraindicated by the World Health Organization, the British National Institute for Health and Care Excellence, the CDC, and other organizations.
Resources should instead be put toward the wide range of medications that have not yet adequately undergone clinical trials.
5: PCR and antibody tests should not be used as inclusion criteria for trial participants
Only an estimated 1%-3% of cases in the first wave of COVID were documented, and the CDC estimates that only 25% of cases through September 2021 were documented. Similarly, antibody tests are unreliable to determine past infection, as roughly a third of patients don’t seroconvert, and a similar proportion serorevert within a few months. Using polymerase chain reaction (PCR) and antibody testing to determine who should be included in clinical trials limits who is eligible to participate in research, particularly those who have been ill for longer. Additionally, the majority of those who serorevert are women, so using antibody tests for inclusion introduces a selection bias and may miss mechanisms of immune system functioning that are part of long COVID.
PCR tests also have high false-negative rates and requiring them in research excludes people with lower viral loads with long COVID, which would confound findings.
These issues with testing also lead to COVID-infected people accidentally being included in control groups, which ruins the credibility of the research findings completely.
6: Include comparator groups
There are several common diagnoses that occur in people with long COVID, including ME/CFS, postural orthostatic tachycardia syndrome, small-fiber neuropathy, mast cell activation syndrome, and Ehlers-Danlos syndrome.
Identifying people with these conditions within the trial cohort improves research across all fields, benefiting all groups, and helps clarify what types of patients benefit most from certain medications.
7: Identify the right endpoints; avoid the wrong ones
Even though our understanding of the pathophysiology of long COVID is still evolving, it’s still possible to do clinical trials by identifying strong endpoints and outcome measures.
Several tools have been designed for viral-onset conditions and should be used alongside other endpoints. Postexertional malaise and autonomic symptoms, which are some of the most common symptoms of long COVID, can be measured with the validated DSQ-PEM and COMPASS-31, respectively. Tools for cognitive dysfunction trials should capture specific and common types of impairment, like processing speed.
Endpoints should be high-impact and aim for large improvements that have clinical significance over small improvements that do not have clinical significance.
Objective tests should be incorporated where possible; some to consider include natural killer cell functioning, cerebral blood flow, T-cell functioning, levels of reactivated herpesviruses, blood lactate levels, and microclots, as testing becomes available.
Mental health outcomes shouldn’t be primary endpoints, except where a trial is targeting a specific mental health condition because of COVID (for example, premenstrual dysphoric disorder).
If mental health conditions are tracked secondarily, it’s vital not to use questionnaires that include physical symptoms like fatigue, difficulty concentrating, difficulty sleeping, or palpitations, as these artificially increase depression and anxiety scores in chronically ill respondents. Tools that include physical symptoms (Patient Health Questionnaire–9, Beck Anxiety Inventory, Beck Depression Inventory) can be replaced with scales like the PHQ-2, General Anxiety Disorder–7, Hospital Anxiety and Depression Scale, or PROMIS-29 subscales.
Because certain cytokines and other inflammatory markers may naturally decrease over time without corresponding improvement in the ME/CFS subtype, caution should be taken when using cytokines as endpoints.
8: Consider enrollment and objectives carefully
A proportion of people with long COVID will recover in the early months after infection. Ideally, clinical trials will primarily study treatments in patients who have been ill 6 months or longer, as some natural recovery will happen before that can bias studies.
But where resources are abundant, it is ideal for trials to additionally look at whether the treatments can help patients in the early months recover and prevent progression to the later stage.
9: Tracking illness duration is crucial
Research from ME/CFS shows that there may be an immune change in the first few years of the illness, where cytokines decrease without any corresponding change in symptom improvement.
Because of this and the possibility that other markers follow the same pattern, disease duration should be a core feature of all analyses and trial designs. Trial outcomes should be designed to answer the question of whether the medication helps patients at different durations of illness.
10: Prioritize patient populations less likely to recover without intervention
Some long COVID phenotypes seem less likely to recover without intervention. Trials should take care to focus on these patient populations, which include those with neurologic symptoms and those meeting ME/CFS criteria.
11: Account for the relapsing/remitting nature
Outcome measures need to be assessed in a way that can distinguish a temporary remission, which is part of the natural course of the disease, from a permanent cure.
Factors that can contribute to the relapsing/remitting nature include physical and cognitive postexertional malaise, menstrual cycle changes, and seasonal changes.
12: Trial participants should reflect the diversity of the long COVID population
Certain demographics are more likely to be affected by acute and long COVID and need to be appropriately recruited and reflected in research, including in patient engagement.
Trials must include high numbers of Hispanic/Latinx, Black, and indigenous communities, queer and transgender populations, and women. Trial materials and design need to incorporate linguistic diversity in addition to racial/ethnic diversity.
Upward of 75% of long COVID cases happen after mild acute cases; clinical researchers should ensure that nonhospitalized patients make up the bulk of trial participants.
13: Utilize meaningful engagement of patients, especially in treatment selection and study design
Meaningful patient engagement means engaging multiple patients at every step of the trial process, from treatment selection to study design to analysis to communication of the results.
Patient experiences are extremely valuable and contain information that researchers may not be familiar with, including the nature and patterns of the illness, insights into possible treatments, and barriers to documentation and care that may also impact research. Tapping into those patient experiences will make trials stronger.
Overall, the landscape of long COVID clinical trials is ripe for discovery, and researchers choosing to go down this path will be deeply appreciated by the patient community.
Hannah Davis is a long COVID patient-researcher and cofounder of the Patient-Led Research Collaborative, an organization studying the long-term effects of COVID.
A version of this article first appeared on Medscape.com.
The Centers for Disease Control and Prevention and the U.S. Census Bureau estimate that 6.1% of the U.S. adult population is living with long COVID, with millions more debilitated worldwide. The demand for substantial treatment is enormous, but the urgency to fund and begin the necessary range of clinical trials has not met the severity of the problem.
While trials are slowly beginning to happen, the treatment choices and trial design require crucial nuances and understanding of viral-onset illnesses, and few research groups are creating strong trials that fully reflect the complexities of this landscape.
These recommendations recognize that roughly half of long COVID patients have new-onset myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and dysautonomia from COVID, which must be at the forefront of how trials are designed and conducted, and are additionally based on the current hypotheses about long COVID’s pathophysiologies.
1: Drugs proposed by experts in postviral fields should be prioritized
Upward of 50 drugs for viral-onset conditions like ME/CFS, dysautonomia, AIDS, and others have been waiting for years to go to trial, but have not had the funding to do so.
Treatments proposed by experts in viral-onset illnesses (such as ME/CFS and dysautonomia) should be prioritized (PM R. 2022 Oct;14[10]:1270-91), as outside researchers are not familiar with these fields and their potential treatment options.
2: Drugs targeting a wide range of mechanisms should be trialed
Treatments that should be trialed include anticoagulants/antiplatelets for clotting and vascular functioning, immunomodulators including JAK-STAT inhibitors, COVID-specific antivirals and antivirals against reactivated herpesviruses (Valcyte, Valacyclovir, EBV vaccine).
Other options include prescription mast cell stabilizers (ketotifen, cromolyn sodium), drugs that regulate microglial activation (low-dose naltrexone, low-dose aripiprazole), anti-CGRP medications, beta-blockers, and intravenous immunoglobulin.
Others include medications that target mitochondrial dysfunction; ivabradine; pyridostigmine;, DRP1 inhibitors; supplements showing success in patient communities including lactoferrin, ubiquinone, and nattokinase; and therapies targeting glymphatic/lymphatic dysfunction, microbiome therapies, and therapeutic peptides.
3: Use appropriate long COVID subtypes
Long COVID is an umbrella term that encompasses multiple new-onset and worsened conditions and symptoms after COVID. Roughly half of long COVID patients likely meet the criteria for ME/CFS and/or dysautonomia. Others may have new-onset diabetes, major clotting events, lung damage, neurological disorders, loss of smell or taste, and other manifestations.
Patients in different categories likely have different responses to treatments. It’s critical to identify appropriate subtypes for each trial, ideally performing detailed analyses to identify the treatments that work best, and don’t, for each subtype.
4: Behavioral treatments, especially those that have harmed similar populations, should not be trialed
Behavioral treatments including exercise, graded exercise therapy (GET), and cognitive-behavioral therapy (CBT) should not be trialed, let alone prioritized, for long COVID.
In patients with postexertional malaise (PEM), one of the most common long COVID symptoms, exercise is actively harmful and causes dysfunctional metabolic patterns, cardiac preload failure, impaired systemic oxygen extraction, and more. GET and CBT have failed similar populations , and exercise is explicitly contraindicated by the World Health Organization, the British National Institute for Health and Care Excellence, the CDC, and other organizations.
Resources should instead be put toward the wide range of medications that have not yet adequately undergone clinical trials.
5: PCR and antibody tests should not be used as inclusion criteria for trial participants
Only an estimated 1%-3% of cases in the first wave of COVID were documented, and the CDC estimates that only 25% of cases through September 2021 were documented. Similarly, antibody tests are unreliable to determine past infection, as roughly a third of patients don’t seroconvert, and a similar proportion serorevert within a few months. Using polymerase chain reaction (PCR) and antibody testing to determine who should be included in clinical trials limits who is eligible to participate in research, particularly those who have been ill for longer. Additionally, the majority of those who serorevert are women, so using antibody tests for inclusion introduces a selection bias and may miss mechanisms of immune system functioning that are part of long COVID.
PCR tests also have high false-negative rates and requiring them in research excludes people with lower viral loads with long COVID, which would confound findings.
These issues with testing also lead to COVID-infected people accidentally being included in control groups, which ruins the credibility of the research findings completely.
6: Include comparator groups
There are several common diagnoses that occur in people with long COVID, including ME/CFS, postural orthostatic tachycardia syndrome, small-fiber neuropathy, mast cell activation syndrome, and Ehlers-Danlos syndrome.
Identifying people with these conditions within the trial cohort improves research across all fields, benefiting all groups, and helps clarify what types of patients benefit most from certain medications.
7: Identify the right endpoints; avoid the wrong ones
Even though our understanding of the pathophysiology of long COVID is still evolving, it’s still possible to do clinical trials by identifying strong endpoints and outcome measures.
Several tools have been designed for viral-onset conditions and should be used alongside other endpoints. Postexertional malaise and autonomic symptoms, which are some of the most common symptoms of long COVID, can be measured with the validated DSQ-PEM and COMPASS-31, respectively. Tools for cognitive dysfunction trials should capture specific and common types of impairment, like processing speed.
Endpoints should be high-impact and aim for large improvements that have clinical significance over small improvements that do not have clinical significance.
Objective tests should be incorporated where possible; some to consider include natural killer cell functioning, cerebral blood flow, T-cell functioning, levels of reactivated herpesviruses, blood lactate levels, and microclots, as testing becomes available.
Mental health outcomes shouldn’t be primary endpoints, except where a trial is targeting a specific mental health condition because of COVID (for example, premenstrual dysphoric disorder).
If mental health conditions are tracked secondarily, it’s vital not to use questionnaires that include physical symptoms like fatigue, difficulty concentrating, difficulty sleeping, or palpitations, as these artificially increase depression and anxiety scores in chronically ill respondents. Tools that include physical symptoms (Patient Health Questionnaire–9, Beck Anxiety Inventory, Beck Depression Inventory) can be replaced with scales like the PHQ-2, General Anxiety Disorder–7, Hospital Anxiety and Depression Scale, or PROMIS-29 subscales.
Because certain cytokines and other inflammatory markers may naturally decrease over time without corresponding improvement in the ME/CFS subtype, caution should be taken when using cytokines as endpoints.
8: Consider enrollment and objectives carefully
A proportion of people with long COVID will recover in the early months after infection. Ideally, clinical trials will primarily study treatments in patients who have been ill 6 months or longer, as some natural recovery will happen before that can bias studies.
But where resources are abundant, it is ideal for trials to additionally look at whether the treatments can help patients in the early months recover and prevent progression to the later stage.
9: Tracking illness duration is crucial
Research from ME/CFS shows that there may be an immune change in the first few years of the illness, where cytokines decrease without any corresponding change in symptom improvement.
Because of this and the possibility that other markers follow the same pattern, disease duration should be a core feature of all analyses and trial designs. Trial outcomes should be designed to answer the question of whether the medication helps patients at different durations of illness.
10: Prioritize patient populations less likely to recover without intervention
Some long COVID phenotypes seem less likely to recover without intervention. Trials should take care to focus on these patient populations, which include those with neurologic symptoms and those meeting ME/CFS criteria.
11: Account for the relapsing/remitting nature
Outcome measures need to be assessed in a way that can distinguish a temporary remission, which is part of the natural course of the disease, from a permanent cure.
Factors that can contribute to the relapsing/remitting nature include physical and cognitive postexertional malaise, menstrual cycle changes, and seasonal changes.
12: Trial participants should reflect the diversity of the long COVID population
Certain demographics are more likely to be affected by acute and long COVID and need to be appropriately recruited and reflected in research, including in patient engagement.
Trials must include high numbers of Hispanic/Latinx, Black, and indigenous communities, queer and transgender populations, and women. Trial materials and design need to incorporate linguistic diversity in addition to racial/ethnic diversity.
Upward of 75% of long COVID cases happen after mild acute cases; clinical researchers should ensure that nonhospitalized patients make up the bulk of trial participants.
13: Utilize meaningful engagement of patients, especially in treatment selection and study design
Meaningful patient engagement means engaging multiple patients at every step of the trial process, from treatment selection to study design to analysis to communication of the results.
Patient experiences are extremely valuable and contain information that researchers may not be familiar with, including the nature and patterns of the illness, insights into possible treatments, and barriers to documentation and care that may also impact research. Tapping into those patient experiences will make trials stronger.
Overall, the landscape of long COVID clinical trials is ripe for discovery, and researchers choosing to go down this path will be deeply appreciated by the patient community.
Hannah Davis is a long COVID patient-researcher and cofounder of the Patient-Led Research Collaborative, an organization studying the long-term effects of COVID.
A version of this article first appeared on Medscape.com.
FDA expands use of dapagliflozin to broader range of HF
– including HF with mildly reduced ejection fraction (HFmrEF) and with preserved ejection fraction (HFpEF).
The sodium-glucose cotransporter 2 (SGLT2) inhibitor was previously approved in the United States for adults with heart failure with reduced ejection fraction (HFrEF).
The expanded indication is based on data from the phase 3 DELIVER trial, which showed clear clinical benefits of the SGLT2 inhibitor for patients with HF regardless of left ventricular function.
In the trial, which included more than 6,200 patients, dapagliflozin led to a statistically significant and clinically meaningful early reduction in the primary composite endpoint of cardiovascular (CV) death or worsening HF for patients with HFmrEF or HFpEFF.
In addition, results of a pooled analysis of the DAPA-HF and DELIVER phase 3 trials showed a consistent benefit from dapagliflozin treatment in significantly reducing the combined endpoint of CV death or HF hospitalization across the range of LVEF.
The European Commission expanded the indication for dapagliflozin (Forxiga) to include HF across the full spectrum of LVEF in February.
The SGLT2 inhibitor is also approved for use by patients with chronic kidney disease. It was first approved in 2014 to improve glycemic control for patients with diabetes mellitus.
A version of this article first appeared on Medscape.com.
– including HF with mildly reduced ejection fraction (HFmrEF) and with preserved ejection fraction (HFpEF).
The sodium-glucose cotransporter 2 (SGLT2) inhibitor was previously approved in the United States for adults with heart failure with reduced ejection fraction (HFrEF).
The expanded indication is based on data from the phase 3 DELIVER trial, which showed clear clinical benefits of the SGLT2 inhibitor for patients with HF regardless of left ventricular function.
In the trial, which included more than 6,200 patients, dapagliflozin led to a statistically significant and clinically meaningful early reduction in the primary composite endpoint of cardiovascular (CV) death or worsening HF for patients with HFmrEF or HFpEFF.
In addition, results of a pooled analysis of the DAPA-HF and DELIVER phase 3 trials showed a consistent benefit from dapagliflozin treatment in significantly reducing the combined endpoint of CV death or HF hospitalization across the range of LVEF.
The European Commission expanded the indication for dapagliflozin (Forxiga) to include HF across the full spectrum of LVEF in February.
The SGLT2 inhibitor is also approved for use by patients with chronic kidney disease. It was first approved in 2014 to improve glycemic control for patients with diabetes mellitus.
A version of this article first appeared on Medscape.com.
– including HF with mildly reduced ejection fraction (HFmrEF) and with preserved ejection fraction (HFpEF).
The sodium-glucose cotransporter 2 (SGLT2) inhibitor was previously approved in the United States for adults with heart failure with reduced ejection fraction (HFrEF).
The expanded indication is based on data from the phase 3 DELIVER trial, which showed clear clinical benefits of the SGLT2 inhibitor for patients with HF regardless of left ventricular function.
In the trial, which included more than 6,200 patients, dapagliflozin led to a statistically significant and clinically meaningful early reduction in the primary composite endpoint of cardiovascular (CV) death or worsening HF for patients with HFmrEF or HFpEFF.
In addition, results of a pooled analysis of the DAPA-HF and DELIVER phase 3 trials showed a consistent benefit from dapagliflozin treatment in significantly reducing the combined endpoint of CV death or HF hospitalization across the range of LVEF.
The European Commission expanded the indication for dapagliflozin (Forxiga) to include HF across the full spectrum of LVEF in February.
The SGLT2 inhibitor is also approved for use by patients with chronic kidney disease. It was first approved in 2014 to improve glycemic control for patients with diabetes mellitus.
A version of this article first appeared on Medscape.com.
AHA flags differing CVD risk in Asian American subgroups
Asian Americans have significant differences in genetics, socioeconomic factors, culture, diet, lifestyle, and acculturation levels based on the Asian region of their ancestry that likely have unique effects on their risk for type 2 diabetes and heart disease, the statement noted.
“Examining Asian subgroups separately is crucial to better understand the distinctions among them, how these differences translate into their risk of type 2 diabetes and atherosclerotic disease, and how health care professionals may provide care and support in a culturally appropriate manner,” writing group chair Tak W. Kwan, MD, chief of cardiology, Lenox Health Greenwich Village, and clinical professor of medicine, Northwell Health, New York City, said in a news release.
The statement was published online in the journal Circulation.
Impact on health outcomes
Asian American subgroups are broadly categorized by the geographic region of Asian descent and include South Asia (India, Pakistan, Sri Lanka, Bangladesh, Nepal, or Bhutan); East Asia (Japan, China, or Korea); Southeast Asia (Philippines, Vietnam, Thailand, Cambodia, Laos, Indonesia, Malaysia, Singapore, Hmong); and Native Hawaiian/Pacific Islander (Hawaii, Guam, Samoa, or other Pacific islands).
Asian Americans make up the fastest growing racial and ethnic group in the United States. Together, type 2 diabetes (T2D) and atherosclerotic cardiovascular disease (ASCVD) are the leading causes of illness and death among Asian American adults.
Yet, there is significant variability in prevalence and risk factors within the different subgroups, the writing group pointed out.
For example, based on available data, rates of coronary artery disease (CAD) among Asian Americans indicate an overall prevalence of 8% in men and about 3% in women.
However, available data for subgroups suggest higher CAD rates among Asian Indian Americans (13% for men and 4.4% for women) and Filipino Americans (about 9% and 4%, respectively).
Available data on T2D among Asian American subgroups also show varied prevalence and risk.
A study from California found overall, Asian American adults had higher rates of T2D (range of 15.6%-34.5%) compared with non-Hispanic White adults (12.8%). Among Chinese Americans, the rate was 15.8%. Among Korean and Japanese Americans, rates were about 18% and among Americans with Filipino ancestry, the rate was nearly 32%.
Yet most studies to date aggregate Asian Americans in a single group and do not examine the subgroups individually, which is a challenge to providing evidence-based recommendations, the writing group said.
“Particular attention should focus on the T2D and ASCVD risk differences among the different Asian American subgroups because they may affect the precision in clinical and health outcomes,” the group suggested.
“Culturally specific recommendations and interventions across the different Asian American subgroups related to T2D and ASCVD will help improve primary and secondary prevention and health outcomes in this population,” they added.
The writing group noted that existing CVD risk calculators, which are based on data validated in non-Hispanic Black adults and non-Hispanic White adults and less extensively studied in Asian Americans, may underestimate the risk of T2D and heart disease in South Asian adults, those of lower socioeconomic status, or those with chronic inflammatory diseases.
On the other hand, these tools may overestimate CVD risk among East Asians, those with higher socioeconomic status or those who are already participating in preventive healthcare services.
Advances in epidemiology and data analysis and the availability of larger, representative cohorts will allow for refinement of pooled cohort equations to better gauge ASCVD risk in Asian American subgroups, the group said.
Filling in the gaps
The writing group outlined several key areas to consider for strengthening the data about Asian American adults. Chief among them is the need to include disaggregated data on Asian American subgroups in clinical trials and government-sponsored studies.
Another is to standardize ways of collecting ethnic and subgroup data for Asian Americans for national health systems, surveys, and registries. National surveillance surveys should consider oversampling Asian Americans to increase representation for the various subgroups, the writing group suggested.
“All of us – health care professionals, policymakers, community leaders and patients – must advocate for more health research funding for Asian Americans and demand inclusion of Asian American subgroup information in clinical trials and government-sponsored research,” Dr. Kwan said.
“Having a platform to share and disseminate data on Asian Americans for the scientific and research community would also be an asset for the health care professionals who care for this population,” Dr. Kwan added.
The new scientific statement is a follow-up to a 2010 AHA “call to action” to seek data on health disparities among Asian American subgroups and a 2018 scientific statement addressing CVD risk in South Asians (Asian Indian, Pakistani, Sri Lankan, Bangladeshi, Nepali, or Bhutanese).
This scientific statement was prepared by the volunteer writing group on behalf of the AHA Council on Epidemiology and Prevention; the Council on Lifestyle and Cardiometabolic Health; the Council on Arteriosclerosis, Thrombosis and Vascular Biology; the Council on Clinical Cardiology; the Council on Cardiovascular and Stroke Nursing; and the Council on Genomic and Precision Medicine.
A version of this article first appeared on Medscape.com.
Asian Americans have significant differences in genetics, socioeconomic factors, culture, diet, lifestyle, and acculturation levels based on the Asian region of their ancestry that likely have unique effects on their risk for type 2 diabetes and heart disease, the statement noted.
“Examining Asian subgroups separately is crucial to better understand the distinctions among them, how these differences translate into their risk of type 2 diabetes and atherosclerotic disease, and how health care professionals may provide care and support in a culturally appropriate manner,” writing group chair Tak W. Kwan, MD, chief of cardiology, Lenox Health Greenwich Village, and clinical professor of medicine, Northwell Health, New York City, said in a news release.
The statement was published online in the journal Circulation.
Impact on health outcomes
Asian American subgroups are broadly categorized by the geographic region of Asian descent and include South Asia (India, Pakistan, Sri Lanka, Bangladesh, Nepal, or Bhutan); East Asia (Japan, China, or Korea); Southeast Asia (Philippines, Vietnam, Thailand, Cambodia, Laos, Indonesia, Malaysia, Singapore, Hmong); and Native Hawaiian/Pacific Islander (Hawaii, Guam, Samoa, or other Pacific islands).
Asian Americans make up the fastest growing racial and ethnic group in the United States. Together, type 2 diabetes (T2D) and atherosclerotic cardiovascular disease (ASCVD) are the leading causes of illness and death among Asian American adults.
Yet, there is significant variability in prevalence and risk factors within the different subgroups, the writing group pointed out.
For example, based on available data, rates of coronary artery disease (CAD) among Asian Americans indicate an overall prevalence of 8% in men and about 3% in women.
However, available data for subgroups suggest higher CAD rates among Asian Indian Americans (13% for men and 4.4% for women) and Filipino Americans (about 9% and 4%, respectively).
Available data on T2D among Asian American subgroups also show varied prevalence and risk.
A study from California found overall, Asian American adults had higher rates of T2D (range of 15.6%-34.5%) compared with non-Hispanic White adults (12.8%). Among Chinese Americans, the rate was 15.8%. Among Korean and Japanese Americans, rates were about 18% and among Americans with Filipino ancestry, the rate was nearly 32%.
Yet most studies to date aggregate Asian Americans in a single group and do not examine the subgroups individually, which is a challenge to providing evidence-based recommendations, the writing group said.
“Particular attention should focus on the T2D and ASCVD risk differences among the different Asian American subgroups because they may affect the precision in clinical and health outcomes,” the group suggested.
“Culturally specific recommendations and interventions across the different Asian American subgroups related to T2D and ASCVD will help improve primary and secondary prevention and health outcomes in this population,” they added.
The writing group noted that existing CVD risk calculators, which are based on data validated in non-Hispanic Black adults and non-Hispanic White adults and less extensively studied in Asian Americans, may underestimate the risk of T2D and heart disease in South Asian adults, those of lower socioeconomic status, or those with chronic inflammatory diseases.
On the other hand, these tools may overestimate CVD risk among East Asians, those with higher socioeconomic status or those who are already participating in preventive healthcare services.
Advances in epidemiology and data analysis and the availability of larger, representative cohorts will allow for refinement of pooled cohort equations to better gauge ASCVD risk in Asian American subgroups, the group said.
Filling in the gaps
The writing group outlined several key areas to consider for strengthening the data about Asian American adults. Chief among them is the need to include disaggregated data on Asian American subgroups in clinical trials and government-sponsored studies.
Another is to standardize ways of collecting ethnic and subgroup data for Asian Americans for national health systems, surveys, and registries. National surveillance surveys should consider oversampling Asian Americans to increase representation for the various subgroups, the writing group suggested.
“All of us – health care professionals, policymakers, community leaders and patients – must advocate for more health research funding for Asian Americans and demand inclusion of Asian American subgroup information in clinical trials and government-sponsored research,” Dr. Kwan said.
“Having a platform to share and disseminate data on Asian Americans for the scientific and research community would also be an asset for the health care professionals who care for this population,” Dr. Kwan added.
The new scientific statement is a follow-up to a 2010 AHA “call to action” to seek data on health disparities among Asian American subgroups and a 2018 scientific statement addressing CVD risk in South Asians (Asian Indian, Pakistani, Sri Lankan, Bangladeshi, Nepali, or Bhutanese).
This scientific statement was prepared by the volunteer writing group on behalf of the AHA Council on Epidemiology and Prevention; the Council on Lifestyle and Cardiometabolic Health; the Council on Arteriosclerosis, Thrombosis and Vascular Biology; the Council on Clinical Cardiology; the Council on Cardiovascular and Stroke Nursing; and the Council on Genomic and Precision Medicine.
A version of this article first appeared on Medscape.com.
Asian Americans have significant differences in genetics, socioeconomic factors, culture, diet, lifestyle, and acculturation levels based on the Asian region of their ancestry that likely have unique effects on their risk for type 2 diabetes and heart disease, the statement noted.
“Examining Asian subgroups separately is crucial to better understand the distinctions among them, how these differences translate into their risk of type 2 diabetes and atherosclerotic disease, and how health care professionals may provide care and support in a culturally appropriate manner,” writing group chair Tak W. Kwan, MD, chief of cardiology, Lenox Health Greenwich Village, and clinical professor of medicine, Northwell Health, New York City, said in a news release.
The statement was published online in the journal Circulation.
Impact on health outcomes
Asian American subgroups are broadly categorized by the geographic region of Asian descent and include South Asia (India, Pakistan, Sri Lanka, Bangladesh, Nepal, or Bhutan); East Asia (Japan, China, or Korea); Southeast Asia (Philippines, Vietnam, Thailand, Cambodia, Laos, Indonesia, Malaysia, Singapore, Hmong); and Native Hawaiian/Pacific Islander (Hawaii, Guam, Samoa, or other Pacific islands).
Asian Americans make up the fastest growing racial and ethnic group in the United States. Together, type 2 diabetes (T2D) and atherosclerotic cardiovascular disease (ASCVD) are the leading causes of illness and death among Asian American adults.
Yet, there is significant variability in prevalence and risk factors within the different subgroups, the writing group pointed out.
For example, based on available data, rates of coronary artery disease (CAD) among Asian Americans indicate an overall prevalence of 8% in men and about 3% in women.
However, available data for subgroups suggest higher CAD rates among Asian Indian Americans (13% for men and 4.4% for women) and Filipino Americans (about 9% and 4%, respectively).
Available data on T2D among Asian American subgroups also show varied prevalence and risk.
A study from California found overall, Asian American adults had higher rates of T2D (range of 15.6%-34.5%) compared with non-Hispanic White adults (12.8%). Among Chinese Americans, the rate was 15.8%. Among Korean and Japanese Americans, rates were about 18% and among Americans with Filipino ancestry, the rate was nearly 32%.
Yet most studies to date aggregate Asian Americans in a single group and do not examine the subgroups individually, which is a challenge to providing evidence-based recommendations, the writing group said.
“Particular attention should focus on the T2D and ASCVD risk differences among the different Asian American subgroups because they may affect the precision in clinical and health outcomes,” the group suggested.
“Culturally specific recommendations and interventions across the different Asian American subgroups related to T2D and ASCVD will help improve primary and secondary prevention and health outcomes in this population,” they added.
The writing group noted that existing CVD risk calculators, which are based on data validated in non-Hispanic Black adults and non-Hispanic White adults and less extensively studied in Asian Americans, may underestimate the risk of T2D and heart disease in South Asian adults, those of lower socioeconomic status, or those with chronic inflammatory diseases.
On the other hand, these tools may overestimate CVD risk among East Asians, those with higher socioeconomic status or those who are already participating in preventive healthcare services.
Advances in epidemiology and data analysis and the availability of larger, representative cohorts will allow for refinement of pooled cohort equations to better gauge ASCVD risk in Asian American subgroups, the group said.
Filling in the gaps
The writing group outlined several key areas to consider for strengthening the data about Asian American adults. Chief among them is the need to include disaggregated data on Asian American subgroups in clinical trials and government-sponsored studies.
Another is to standardize ways of collecting ethnic and subgroup data for Asian Americans for national health systems, surveys, and registries. National surveillance surveys should consider oversampling Asian Americans to increase representation for the various subgroups, the writing group suggested.
“All of us – health care professionals, policymakers, community leaders and patients – must advocate for more health research funding for Asian Americans and demand inclusion of Asian American subgroup information in clinical trials and government-sponsored research,” Dr. Kwan said.
“Having a platform to share and disseminate data on Asian Americans for the scientific and research community would also be an asset for the health care professionals who care for this population,” Dr. Kwan added.
The new scientific statement is a follow-up to a 2010 AHA “call to action” to seek data on health disparities among Asian American subgroups and a 2018 scientific statement addressing CVD risk in South Asians (Asian Indian, Pakistani, Sri Lankan, Bangladeshi, Nepali, or Bhutanese).
This scientific statement was prepared by the volunteer writing group on behalf of the AHA Council on Epidemiology and Prevention; the Council on Lifestyle and Cardiometabolic Health; the Council on Arteriosclerosis, Thrombosis and Vascular Biology; the Council on Clinical Cardiology; the Council on Cardiovascular and Stroke Nursing; and the Council on Genomic and Precision Medicine.
A version of this article first appeared on Medscape.com.
FROM CIRCULATION
New AACE type 2 diabetes algorithm individualizes care
SEATTLE – The latest American Association of Clinical Endocrinology type 2 diabetes management algorithm uses graphics to focus on individualized care while adding newly compiled information about medication access and affordability, vaccinations, and weight loss drugs.
The clinical guidance document was presented at the annual scientific & clinical congress of the American Association of Clinical Endocrinology and simultaneously published in Endocrine Practice.
Using text and colorful graphics, the document summarizes information from last year’s update and other recent AACE documents, including those addressing dyslipidemia and use of diabetes technology.
lead author Susan L. Samson, MD, PhD, chair of endocrinology, diabetes & metabolism at the Mayo Clinic Florida, Jacksonville, said in an interview.
Asked to comment, Anne L. Peters, MD, professor of clinical medicine at the University of Southern California, Los Angeles, said: “I like their simple graphics. For the Department of Health Services in Los Angeles County, we have been painstakingly trying to create our own flow diagrams. ... These will help.”
Eleven separate algorithms with text and graphics
Included are 11 visual management algorithms, with accompanying text for each one. The first lists 10 overall management principles, including “lifestyle modification underlies all therapy,” “maintain or achieve optimal weight,” “choice of therapy includes ease of use and access,” “individualize all glucose targets,” “avoid hypoglycemia,” and “comorbidities must be managed for comprehensive care.”
Three more algorithms cover the diabetes-adjacent topics of adiposity-based chronic disease, prediabetes, dyslipidemia, and hypertension.
Four separate graphics address glucose-lowering. Two are “complications-centric” and “glucose-centric” algorithms, another covers insulin initiation and titration, and a table summarizes the benefits and risks of currently available glucose-lowering medications, as well as cost.
Splitting the glucose-lowering algorithms into “complications-centric” and “glucose-centric” graphics is new, Dr. Samson said. “The complications one comes first, deliberately. You need to think about: Does my patient have a history of or high risk for cardiovascular disease, heart failure, stroke, or diabetic kidney disease? And, you want to prioritize those medications that have evidence to improve outcomes with those different diabetes complications versus a one-size-fits-all approach.”
And for patients without those complications, the glucose-centric algorithm considers obesity, hypoglycemia risk, and access/cost issues. “So, overall the diabetes medication algorithm has been split in order to emphasize that personalized approach to decision-making,” Dr. Samson explained.
Also new is a table listing the benefits and risks of weight-loss medications, and another covering immunization guidance for people with diabetes based on recommendations from the U.S. Centers for Disease Control and Prevention. “Coming out of the pandemic, we’re thinking about how can we protect our patients from infectious disease and all the comorbidities. In some cases, people with diabetes can have a much higher risk for adverse events,” Dr. Samson noted.
Regarding the weight-loss medications table, she pointed out that the task force couldn’t include the blockbuster twincretin tirzepatide because it’s not yet approved for weight loss by the U.S. Food and Drug Administration. However, it is included in the glucose-lowering drug table with weight loss listed among its benefits.
“We want this to be a living document that should be updated in a timely fashion, and so, as these new indications are approved and we see more evidence supporting their different uses, this should be updated in a really timely fashion to reflect that,” Dr. Samson said.
The end of the document includes a full page of each graphic, meant for wall posting.
Dr. Peters noted that for the most part, the AACE guidelines and algorithm align with joint guidance by the American Diabetes Association and European Association for the Study of Diabetes.
“For many years there seemed to be big differences between the AACE and ADA guidelines for the management of type 2 diabetes. Although small differences still exist ... the ADA and AACE guidelines have become quite similar,” she said.
Dr. Peters also praised the AACE algorithm for providing “a pathway for people who have issues with access and cost.”
“I am incredibly proud that in the County of Los Angeles you can get a [glucagon-like peptide-1 receptor agonist] and/or a [sodium-glucose cotransporter-2 inhibitor] even with the most restricted MediCal insurance if indications are met. But there remain many people in many places where access and cost limit options, and I am grateful that AACE includes this in their algorithms,” she said.
Dr. Samson has reported receiving research support to the Mayo Clinic from Corcept, serving on a steering committee and being a national or overall principal investigator for Chiasma and Novartis, and being a committee chair for the American Board of Internal Medicine. Dr. Peters has reported relationships with Blue Circle Health, Vertex, and Abbott Diabetes Care, receiving research grants from Abbott Diabetes Care and Insulet, and holding stock options in Teladoc and Omada Health.
A version of this article originally appeared on Medscape.com.
SEATTLE – The latest American Association of Clinical Endocrinology type 2 diabetes management algorithm uses graphics to focus on individualized care while adding newly compiled information about medication access and affordability, vaccinations, and weight loss drugs.
The clinical guidance document was presented at the annual scientific & clinical congress of the American Association of Clinical Endocrinology and simultaneously published in Endocrine Practice.
Using text and colorful graphics, the document summarizes information from last year’s update and other recent AACE documents, including those addressing dyslipidemia and use of diabetes technology.
lead author Susan L. Samson, MD, PhD, chair of endocrinology, diabetes & metabolism at the Mayo Clinic Florida, Jacksonville, said in an interview.
Asked to comment, Anne L. Peters, MD, professor of clinical medicine at the University of Southern California, Los Angeles, said: “I like their simple graphics. For the Department of Health Services in Los Angeles County, we have been painstakingly trying to create our own flow diagrams. ... These will help.”
Eleven separate algorithms with text and graphics
Included are 11 visual management algorithms, with accompanying text for each one. The first lists 10 overall management principles, including “lifestyle modification underlies all therapy,” “maintain or achieve optimal weight,” “choice of therapy includes ease of use and access,” “individualize all glucose targets,” “avoid hypoglycemia,” and “comorbidities must be managed for comprehensive care.”
Three more algorithms cover the diabetes-adjacent topics of adiposity-based chronic disease, prediabetes, dyslipidemia, and hypertension.
Four separate graphics address glucose-lowering. Two are “complications-centric” and “glucose-centric” algorithms, another covers insulin initiation and titration, and a table summarizes the benefits and risks of currently available glucose-lowering medications, as well as cost.
Splitting the glucose-lowering algorithms into “complications-centric” and “glucose-centric” graphics is new, Dr. Samson said. “The complications one comes first, deliberately. You need to think about: Does my patient have a history of or high risk for cardiovascular disease, heart failure, stroke, or diabetic kidney disease? And, you want to prioritize those medications that have evidence to improve outcomes with those different diabetes complications versus a one-size-fits-all approach.”
And for patients without those complications, the glucose-centric algorithm considers obesity, hypoglycemia risk, and access/cost issues. “So, overall the diabetes medication algorithm has been split in order to emphasize that personalized approach to decision-making,” Dr. Samson explained.
Also new is a table listing the benefits and risks of weight-loss medications, and another covering immunization guidance for people with diabetes based on recommendations from the U.S. Centers for Disease Control and Prevention. “Coming out of the pandemic, we’re thinking about how can we protect our patients from infectious disease and all the comorbidities. In some cases, people with diabetes can have a much higher risk for adverse events,” Dr. Samson noted.
Regarding the weight-loss medications table, she pointed out that the task force couldn’t include the blockbuster twincretin tirzepatide because it’s not yet approved for weight loss by the U.S. Food and Drug Administration. However, it is included in the glucose-lowering drug table with weight loss listed among its benefits.
“We want this to be a living document that should be updated in a timely fashion, and so, as these new indications are approved and we see more evidence supporting their different uses, this should be updated in a really timely fashion to reflect that,” Dr. Samson said.
The end of the document includes a full page of each graphic, meant for wall posting.
Dr. Peters noted that for the most part, the AACE guidelines and algorithm align with joint guidance by the American Diabetes Association and European Association for the Study of Diabetes.
“For many years there seemed to be big differences between the AACE and ADA guidelines for the management of type 2 diabetes. Although small differences still exist ... the ADA and AACE guidelines have become quite similar,” she said.
Dr. Peters also praised the AACE algorithm for providing “a pathway for people who have issues with access and cost.”
“I am incredibly proud that in the County of Los Angeles you can get a [glucagon-like peptide-1 receptor agonist] and/or a [sodium-glucose cotransporter-2 inhibitor] even with the most restricted MediCal insurance if indications are met. But there remain many people in many places where access and cost limit options, and I am grateful that AACE includes this in their algorithms,” she said.
Dr. Samson has reported receiving research support to the Mayo Clinic from Corcept, serving on a steering committee and being a national or overall principal investigator for Chiasma and Novartis, and being a committee chair for the American Board of Internal Medicine. Dr. Peters has reported relationships with Blue Circle Health, Vertex, and Abbott Diabetes Care, receiving research grants from Abbott Diabetes Care and Insulet, and holding stock options in Teladoc and Omada Health.
A version of this article originally appeared on Medscape.com.
SEATTLE – The latest American Association of Clinical Endocrinology type 2 diabetes management algorithm uses graphics to focus on individualized care while adding newly compiled information about medication access and affordability, vaccinations, and weight loss drugs.
The clinical guidance document was presented at the annual scientific & clinical congress of the American Association of Clinical Endocrinology and simultaneously published in Endocrine Practice.
Using text and colorful graphics, the document summarizes information from last year’s update and other recent AACE documents, including those addressing dyslipidemia and use of diabetes technology.
lead author Susan L. Samson, MD, PhD, chair of endocrinology, diabetes & metabolism at the Mayo Clinic Florida, Jacksonville, said in an interview.
Asked to comment, Anne L. Peters, MD, professor of clinical medicine at the University of Southern California, Los Angeles, said: “I like their simple graphics. For the Department of Health Services in Los Angeles County, we have been painstakingly trying to create our own flow diagrams. ... These will help.”
Eleven separate algorithms with text and graphics
Included are 11 visual management algorithms, with accompanying text for each one. The first lists 10 overall management principles, including “lifestyle modification underlies all therapy,” “maintain or achieve optimal weight,” “choice of therapy includes ease of use and access,” “individualize all glucose targets,” “avoid hypoglycemia,” and “comorbidities must be managed for comprehensive care.”
Three more algorithms cover the diabetes-adjacent topics of adiposity-based chronic disease, prediabetes, dyslipidemia, and hypertension.
Four separate graphics address glucose-lowering. Two are “complications-centric” and “glucose-centric” algorithms, another covers insulin initiation and titration, and a table summarizes the benefits and risks of currently available glucose-lowering medications, as well as cost.
Splitting the glucose-lowering algorithms into “complications-centric” and “glucose-centric” graphics is new, Dr. Samson said. “The complications one comes first, deliberately. You need to think about: Does my patient have a history of or high risk for cardiovascular disease, heart failure, stroke, or diabetic kidney disease? And, you want to prioritize those medications that have evidence to improve outcomes with those different diabetes complications versus a one-size-fits-all approach.”
And for patients without those complications, the glucose-centric algorithm considers obesity, hypoglycemia risk, and access/cost issues. “So, overall the diabetes medication algorithm has been split in order to emphasize that personalized approach to decision-making,” Dr. Samson explained.
Also new is a table listing the benefits and risks of weight-loss medications, and another covering immunization guidance for people with diabetes based on recommendations from the U.S. Centers for Disease Control and Prevention. “Coming out of the pandemic, we’re thinking about how can we protect our patients from infectious disease and all the comorbidities. In some cases, people with diabetes can have a much higher risk for adverse events,” Dr. Samson noted.
Regarding the weight-loss medications table, she pointed out that the task force couldn’t include the blockbuster twincretin tirzepatide because it’s not yet approved for weight loss by the U.S. Food and Drug Administration. However, it is included in the glucose-lowering drug table with weight loss listed among its benefits.
“We want this to be a living document that should be updated in a timely fashion, and so, as these new indications are approved and we see more evidence supporting their different uses, this should be updated in a really timely fashion to reflect that,” Dr. Samson said.
The end of the document includes a full page of each graphic, meant for wall posting.
Dr. Peters noted that for the most part, the AACE guidelines and algorithm align with joint guidance by the American Diabetes Association and European Association for the Study of Diabetes.
“For many years there seemed to be big differences between the AACE and ADA guidelines for the management of type 2 diabetes. Although small differences still exist ... the ADA and AACE guidelines have become quite similar,” she said.
Dr. Peters also praised the AACE algorithm for providing “a pathway for people who have issues with access and cost.”
“I am incredibly proud that in the County of Los Angeles you can get a [glucagon-like peptide-1 receptor agonist] and/or a [sodium-glucose cotransporter-2 inhibitor] even with the most restricted MediCal insurance if indications are met. But there remain many people in many places where access and cost limit options, and I am grateful that AACE includes this in their algorithms,” she said.
Dr. Samson has reported receiving research support to the Mayo Clinic from Corcept, serving on a steering committee and being a national or overall principal investigator for Chiasma and Novartis, and being a committee chair for the American Board of Internal Medicine. Dr. Peters has reported relationships with Blue Circle Health, Vertex, and Abbott Diabetes Care, receiving research grants from Abbott Diabetes Care and Insulet, and holding stock options in Teladoc and Omada Health.
A version of this article originally appeared on Medscape.com.
AT AACE 2023
A call to revamp revascularization trial endpoints
The time has come to rethink the conventional primary endpoints investigators use in coronary revascularization trials – a composite of major adverse cardiovascular events (MACE), death or MI, and other endpoints – and shift toward greater emphasis on quality of life, two clinical trial investigators say.
Gregg Stone, MD, and Mario Gaudino, MD, MSCE, PhD, made their case in the Journal of the American College of Cardiology, writing: “The classic academic exercise of comparing revascularization modalities in an elusive search for a clear ‘winner’ has failed.” Dr. Stone was the principal investigator of the landmark EXCEL trial and an investigator for the ISCHEMIA trial, the latter of which Dr. Gaudino was also an investigator. Both trials evaluated percutaneous coronary intervention (PCI) and coronary artery bypass surgery (CABG) as treatments for coronary artery disease.
In an interview, Dr. Stone, a cardiologist at the Icahn School of Medicine at Mount Sinai, New York, said: “We’re proposing a new endpoint called a composite endpoint measured in a hierarchical fashion of death or quality of life [QOL].” Dr. Gaudino is a cardiac surgeon at Weill Cornell Medicine, New York.
Quality of life as a validation tool
As a measure of revascularization after PCI or CABG, Dr. Stone said, QOL is ready for prime time. “Over the last 20 years there’s been a very rich literature of science developed linking certain quality of life instruments to improved outcomes, in particularly health but also heart failure.”
Those instruments include the Seattle Angina Questionnaire, the Minnesota Living with Heart Failure Questionnaire and the Kansas City Cardiomyopathy questionnaire. “All of these are sufficiently validated that the [Food and Drug Administration] considers them ‘validated tools’ for use in clinical trials.” Dr. Stone also noted that substudies of three landmark trials comparing PCI and CABG – EXCEL, SYNTAX, and FREEDOM – used those instruments to evaluate QOL as an endpoint alongside “hard” outcomes such as death, MI or stroke. “So quality of life already is being used and it is already widely accepted. What we’re saying is, when you think about the information you need for medical studies, we believe it’s time to elevate that from secondary supportive information to primary.”
He and Dr. Gaudino are putting their money where their mouths are. They’ve applied for a grant through the Patient-Centered Outcomes Research Institute to use QOL as an outcomes measure in a trial of revascularization strategies in women and minority patients.
Shortcomings with traditional endpoints
Dr. Stone explained some of the shortcomings with the traditional endpoints revascularization studies have used. “Everybody agrees that mortality or survival is the most important endpoint, but studies can never be large enough to be powered for that. So we always end up combining them with myocardial infarction, stroke, and often with repeat revascularization” into one MACE endpoint.
But those four types of events are “very, very different,” Dr. Stone said. The severity of MIs and strokes can range from minor, almost inconsequential events to major, debilitating events. “Some strokes resolve in a few days but we count them all the same.”
He ticked off a list of the other outcomes the traditional endpoints don’t account for: atrial fibrillation, kidney dysfunction, musculoskeletal disorders, depression, cognitive changes, and vascular complications. They all can all have a significant impact on a patient’s QOL, Dr. Stone said.
“We’ve now entered an era that is much more patient centered,” Dr. Stone said. “My goal as a physician is to try to impart my knowledge of the evidence that’s out there so that the patient can make the decision that gives them the best chance of meeting their life goals and objectives. When you ask patients what they want, they all want to live longer and they want to live better.”
MACE as a composite endpoint has its shortcomings, but using QOL can also be fraught with problems, said Suzanne Baron, MD, director of interventional cardiology research at Massachusetts General Hospital, Boston.
With regards to MACE, she echoed some of Dr. Stone’s concerns. “Patients and clinicians likely would not consider a repeat stenting procedure to be the same as having a stroke, and so weighting these two outcomes equally within a composite endpoint can potentially result in a skewed trial conclusion.”
One potential issue with QOL as an endpoint is that it can vary from day to day. “If quality of life is only measured at a few time points, such as annually, it is possible that those measurements may only reflect a small portion of the patient’s overall quality of life,” she said. “Accordingly, I think that it will be important to incorporate frequent assessments of a patient’s quality of life if these measures will be used as a primary endpoint in cardiac revascularization trials.”
And, in a cost-conscious health care system, quantity (length) of life tends to carry more weight than QOL, she said. “So it will be important that a trial using quality-of-life improvement as a primary endpoint mandates that the degree of improvement be large enough to ensure that the treatment remains high-value from a health economics standpoint.”
Dr. Stone disclosed financial relationships with numerous pharmaceutical companies. Dr. Baron reported financial relationships with Abiomed, Acarix, Boston Scientific, Medtronic, Zoll Medical, Biotronik, Edwards Lifesciences, and Janssen.
The time has come to rethink the conventional primary endpoints investigators use in coronary revascularization trials – a composite of major adverse cardiovascular events (MACE), death or MI, and other endpoints – and shift toward greater emphasis on quality of life, two clinical trial investigators say.
Gregg Stone, MD, and Mario Gaudino, MD, MSCE, PhD, made their case in the Journal of the American College of Cardiology, writing: “The classic academic exercise of comparing revascularization modalities in an elusive search for a clear ‘winner’ has failed.” Dr. Stone was the principal investigator of the landmark EXCEL trial and an investigator for the ISCHEMIA trial, the latter of which Dr. Gaudino was also an investigator. Both trials evaluated percutaneous coronary intervention (PCI) and coronary artery bypass surgery (CABG) as treatments for coronary artery disease.
In an interview, Dr. Stone, a cardiologist at the Icahn School of Medicine at Mount Sinai, New York, said: “We’re proposing a new endpoint called a composite endpoint measured in a hierarchical fashion of death or quality of life [QOL].” Dr. Gaudino is a cardiac surgeon at Weill Cornell Medicine, New York.
Quality of life as a validation tool
As a measure of revascularization after PCI or CABG, Dr. Stone said, QOL is ready for prime time. “Over the last 20 years there’s been a very rich literature of science developed linking certain quality of life instruments to improved outcomes, in particularly health but also heart failure.”
Those instruments include the Seattle Angina Questionnaire, the Minnesota Living with Heart Failure Questionnaire and the Kansas City Cardiomyopathy questionnaire. “All of these are sufficiently validated that the [Food and Drug Administration] considers them ‘validated tools’ for use in clinical trials.” Dr. Stone also noted that substudies of three landmark trials comparing PCI and CABG – EXCEL, SYNTAX, and FREEDOM – used those instruments to evaluate QOL as an endpoint alongside “hard” outcomes such as death, MI or stroke. “So quality of life already is being used and it is already widely accepted. What we’re saying is, when you think about the information you need for medical studies, we believe it’s time to elevate that from secondary supportive information to primary.”
He and Dr. Gaudino are putting their money where their mouths are. They’ve applied for a grant through the Patient-Centered Outcomes Research Institute to use QOL as an outcomes measure in a trial of revascularization strategies in women and minority patients.
Shortcomings with traditional endpoints
Dr. Stone explained some of the shortcomings with the traditional endpoints revascularization studies have used. “Everybody agrees that mortality or survival is the most important endpoint, but studies can never be large enough to be powered for that. So we always end up combining them with myocardial infarction, stroke, and often with repeat revascularization” into one MACE endpoint.
But those four types of events are “very, very different,” Dr. Stone said. The severity of MIs and strokes can range from minor, almost inconsequential events to major, debilitating events. “Some strokes resolve in a few days but we count them all the same.”
He ticked off a list of the other outcomes the traditional endpoints don’t account for: atrial fibrillation, kidney dysfunction, musculoskeletal disorders, depression, cognitive changes, and vascular complications. They all can all have a significant impact on a patient’s QOL, Dr. Stone said.
“We’ve now entered an era that is much more patient centered,” Dr. Stone said. “My goal as a physician is to try to impart my knowledge of the evidence that’s out there so that the patient can make the decision that gives them the best chance of meeting their life goals and objectives. When you ask patients what they want, they all want to live longer and they want to live better.”
MACE as a composite endpoint has its shortcomings, but using QOL can also be fraught with problems, said Suzanne Baron, MD, director of interventional cardiology research at Massachusetts General Hospital, Boston.
With regards to MACE, she echoed some of Dr. Stone’s concerns. “Patients and clinicians likely would not consider a repeat stenting procedure to be the same as having a stroke, and so weighting these two outcomes equally within a composite endpoint can potentially result in a skewed trial conclusion.”
One potential issue with QOL as an endpoint is that it can vary from day to day. “If quality of life is only measured at a few time points, such as annually, it is possible that those measurements may only reflect a small portion of the patient’s overall quality of life,” she said. “Accordingly, I think that it will be important to incorporate frequent assessments of a patient’s quality of life if these measures will be used as a primary endpoint in cardiac revascularization trials.”
And, in a cost-conscious health care system, quantity (length) of life tends to carry more weight than QOL, she said. “So it will be important that a trial using quality-of-life improvement as a primary endpoint mandates that the degree of improvement be large enough to ensure that the treatment remains high-value from a health economics standpoint.”
Dr. Stone disclosed financial relationships with numerous pharmaceutical companies. Dr. Baron reported financial relationships with Abiomed, Acarix, Boston Scientific, Medtronic, Zoll Medical, Biotronik, Edwards Lifesciences, and Janssen.
The time has come to rethink the conventional primary endpoints investigators use in coronary revascularization trials – a composite of major adverse cardiovascular events (MACE), death or MI, and other endpoints – and shift toward greater emphasis on quality of life, two clinical trial investigators say.
Gregg Stone, MD, and Mario Gaudino, MD, MSCE, PhD, made their case in the Journal of the American College of Cardiology, writing: “The classic academic exercise of comparing revascularization modalities in an elusive search for a clear ‘winner’ has failed.” Dr. Stone was the principal investigator of the landmark EXCEL trial and an investigator for the ISCHEMIA trial, the latter of which Dr. Gaudino was also an investigator. Both trials evaluated percutaneous coronary intervention (PCI) and coronary artery bypass surgery (CABG) as treatments for coronary artery disease.
In an interview, Dr. Stone, a cardiologist at the Icahn School of Medicine at Mount Sinai, New York, said: “We’re proposing a new endpoint called a composite endpoint measured in a hierarchical fashion of death or quality of life [QOL].” Dr. Gaudino is a cardiac surgeon at Weill Cornell Medicine, New York.
Quality of life as a validation tool
As a measure of revascularization after PCI or CABG, Dr. Stone said, QOL is ready for prime time. “Over the last 20 years there’s been a very rich literature of science developed linking certain quality of life instruments to improved outcomes, in particularly health but also heart failure.”
Those instruments include the Seattle Angina Questionnaire, the Minnesota Living with Heart Failure Questionnaire and the Kansas City Cardiomyopathy questionnaire. “All of these are sufficiently validated that the [Food and Drug Administration] considers them ‘validated tools’ for use in clinical trials.” Dr. Stone also noted that substudies of three landmark trials comparing PCI and CABG – EXCEL, SYNTAX, and FREEDOM – used those instruments to evaluate QOL as an endpoint alongside “hard” outcomes such as death, MI or stroke. “So quality of life already is being used and it is already widely accepted. What we’re saying is, when you think about the information you need for medical studies, we believe it’s time to elevate that from secondary supportive information to primary.”
He and Dr. Gaudino are putting their money where their mouths are. They’ve applied for a grant through the Patient-Centered Outcomes Research Institute to use QOL as an outcomes measure in a trial of revascularization strategies in women and minority patients.
Shortcomings with traditional endpoints
Dr. Stone explained some of the shortcomings with the traditional endpoints revascularization studies have used. “Everybody agrees that mortality or survival is the most important endpoint, but studies can never be large enough to be powered for that. So we always end up combining them with myocardial infarction, stroke, and often with repeat revascularization” into one MACE endpoint.
But those four types of events are “very, very different,” Dr. Stone said. The severity of MIs and strokes can range from minor, almost inconsequential events to major, debilitating events. “Some strokes resolve in a few days but we count them all the same.”
He ticked off a list of the other outcomes the traditional endpoints don’t account for: atrial fibrillation, kidney dysfunction, musculoskeletal disorders, depression, cognitive changes, and vascular complications. They all can all have a significant impact on a patient’s QOL, Dr. Stone said.
“We’ve now entered an era that is much more patient centered,” Dr. Stone said. “My goal as a physician is to try to impart my knowledge of the evidence that’s out there so that the patient can make the decision that gives them the best chance of meeting their life goals and objectives. When you ask patients what they want, they all want to live longer and they want to live better.”
MACE as a composite endpoint has its shortcomings, but using QOL can also be fraught with problems, said Suzanne Baron, MD, director of interventional cardiology research at Massachusetts General Hospital, Boston.
With regards to MACE, she echoed some of Dr. Stone’s concerns. “Patients and clinicians likely would not consider a repeat stenting procedure to be the same as having a stroke, and so weighting these two outcomes equally within a composite endpoint can potentially result in a skewed trial conclusion.”
One potential issue with QOL as an endpoint is that it can vary from day to day. “If quality of life is only measured at a few time points, such as annually, it is possible that those measurements may only reflect a small portion of the patient’s overall quality of life,” she said. “Accordingly, I think that it will be important to incorporate frequent assessments of a patient’s quality of life if these measures will be used as a primary endpoint in cardiac revascularization trials.”
And, in a cost-conscious health care system, quantity (length) of life tends to carry more weight than QOL, she said. “So it will be important that a trial using quality-of-life improvement as a primary endpoint mandates that the degree of improvement be large enough to ensure that the treatment remains high-value from a health economics standpoint.”
Dr. Stone disclosed financial relationships with numerous pharmaceutical companies. Dr. Baron reported financial relationships with Abiomed, Acarix, Boston Scientific, Medtronic, Zoll Medical, Biotronik, Edwards Lifesciences, and Janssen.
FROM THE JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
Why the approval of MiniMed 780G is a ‘quantum leap’ forward
This transcript has been edited for clarity.
There is wonderful news in the field of hybrid closed-loop pump technology because the Medtronic 780G system was just approved. I can’t tell you how happy this makes me because we’ve all been waiting for this seemingly forever and ever. This isn’t just a small upgrade from the 770G. It’s a quantum leap from the 770G to the 780G. The 780G has newer algorithms, a new sensor, and a longer-lasting infusion set.
It’s been used since 2020 in Europe, so we have good data on how well it works. Frankly, I think it works really well. We’ve seen nice improvements in [hemoglobin] A1c, time in range, other glycemic metrics, and patient satisfaction in studies done in Europe.
Now, I’ve never had the system to use in one of my patients. I always say I never know a system until I see it in use in my own patients, but let me tell you what I’ve read.
First, it has something called meal-detection technology with autocorrection boluses every 5 minutes. If this works, it can be a huge win for our patients because the problem my patients have is with mealtime dosing. They often dose late, or they may not dose enough insulin for the carbohydrates. That’s where the issues are.
All these hybrid closed-loop systems, this one included, show that the best improvements in glycemia are overnight. I’m hoping that this one shows some nice improvements in daytime glycemia as well. Stay tuned and I’ll let you know once I’ve been using it.
Next, it has adjustable targets down to 100. This is the lowest target for any hybrid closed-loop system. It has an extended-wear infusion set that lasts for 7 days. This infusion set is already available but works with this new system.
Finally, it has a new sensor. It looks like the old sensors, but it’s the Guardian 4, which requires much fewer finger sticks. Now, I’m not entirely sure about how often one has to do a finger stick. I know one has to do with finger sticking to initiate auto mode, or what they call SmartGuard, but I don’t know whether you ever have to do it again. I know for sure that you have to do it again if you fall out of the automated mode into manual mode. Once you’re in SmartGuard, I believe there are no further finger-stick calibrations required.
If people are already on the 770G system, this is just a software update that is presumably easy to upgrade to the 780G. Now, the physical pieces ... If someone doesn’t already have the Guardian 4 sensor or the extended-wear infusion set, they’ll have to get those. The software update to make the 770G increase to the 780G should just come through the cloud. I don’t know when that’s going to happen.
I do know that preorders for this system, if you want to buy the new physical system, start on May 15. The shipping of the new 780G system should occur in the United States toward the end of this summer.
I’m so excited. I think this is really going to benefit my patients. I can’t wait to start using it and letting patients see how these algorithms work and how they really help patients improve their glucose control.
Anne L. Peters, MD, is a professor of medicine at the University of Southern California, Los Angeles, and director of the USC clinical diabetes programs. She reported conflicts of interest with Abbott Diabetes Care, Becton Dickinson, Boehringer Ingelheim, Eli Lilly, Lexicon Pharmaceuticals, Livongo, Medscape, Merck, Novo Nordisk, Omada Health, OptumHealth, Sanofi, Zafgen, Dexcom, MannKind, and AstraZeneca.
A version of this article first appeared on Medscape.com.
This transcript has been edited for clarity.
There is wonderful news in the field of hybrid closed-loop pump technology because the Medtronic 780G system was just approved. I can’t tell you how happy this makes me because we’ve all been waiting for this seemingly forever and ever. This isn’t just a small upgrade from the 770G. It’s a quantum leap from the 770G to the 780G. The 780G has newer algorithms, a new sensor, and a longer-lasting infusion set.
It’s been used since 2020 in Europe, so we have good data on how well it works. Frankly, I think it works really well. We’ve seen nice improvements in [hemoglobin] A1c, time in range, other glycemic metrics, and patient satisfaction in studies done in Europe.
Now, I’ve never had the system to use in one of my patients. I always say I never know a system until I see it in use in my own patients, but let me tell you what I’ve read.
First, it has something called meal-detection technology with autocorrection boluses every 5 minutes. If this works, it can be a huge win for our patients because the problem my patients have is with mealtime dosing. They often dose late, or they may not dose enough insulin for the carbohydrates. That’s where the issues are.
All these hybrid closed-loop systems, this one included, show that the best improvements in glycemia are overnight. I’m hoping that this one shows some nice improvements in daytime glycemia as well. Stay tuned and I’ll let you know once I’ve been using it.
Next, it has adjustable targets down to 100. This is the lowest target for any hybrid closed-loop system. It has an extended-wear infusion set that lasts for 7 days. This infusion set is already available but works with this new system.
Finally, it has a new sensor. It looks like the old sensors, but it’s the Guardian 4, which requires much fewer finger sticks. Now, I’m not entirely sure about how often one has to do a finger stick. I know one has to do with finger sticking to initiate auto mode, or what they call SmartGuard, but I don’t know whether you ever have to do it again. I know for sure that you have to do it again if you fall out of the automated mode into manual mode. Once you’re in SmartGuard, I believe there are no further finger-stick calibrations required.
If people are already on the 770G system, this is just a software update that is presumably easy to upgrade to the 780G. Now, the physical pieces ... If someone doesn’t already have the Guardian 4 sensor or the extended-wear infusion set, they’ll have to get those. The software update to make the 770G increase to the 780G should just come through the cloud. I don’t know when that’s going to happen.
I do know that preorders for this system, if you want to buy the new physical system, start on May 15. The shipping of the new 780G system should occur in the United States toward the end of this summer.
I’m so excited. I think this is really going to benefit my patients. I can’t wait to start using it and letting patients see how these algorithms work and how they really help patients improve their glucose control.
Anne L. Peters, MD, is a professor of medicine at the University of Southern California, Los Angeles, and director of the USC clinical diabetes programs. She reported conflicts of interest with Abbott Diabetes Care, Becton Dickinson, Boehringer Ingelheim, Eli Lilly, Lexicon Pharmaceuticals, Livongo, Medscape, Merck, Novo Nordisk, Omada Health, OptumHealth, Sanofi, Zafgen, Dexcom, MannKind, and AstraZeneca.
A version of this article first appeared on Medscape.com.
This transcript has been edited for clarity.
There is wonderful news in the field of hybrid closed-loop pump technology because the Medtronic 780G system was just approved. I can’t tell you how happy this makes me because we’ve all been waiting for this seemingly forever and ever. This isn’t just a small upgrade from the 770G. It’s a quantum leap from the 770G to the 780G. The 780G has newer algorithms, a new sensor, and a longer-lasting infusion set.
It’s been used since 2020 in Europe, so we have good data on how well it works. Frankly, I think it works really well. We’ve seen nice improvements in [hemoglobin] A1c, time in range, other glycemic metrics, and patient satisfaction in studies done in Europe.
Now, I’ve never had the system to use in one of my patients. I always say I never know a system until I see it in use in my own patients, but let me tell you what I’ve read.
First, it has something called meal-detection technology with autocorrection boluses every 5 minutes. If this works, it can be a huge win for our patients because the problem my patients have is with mealtime dosing. They often dose late, or they may not dose enough insulin for the carbohydrates. That’s where the issues are.
All these hybrid closed-loop systems, this one included, show that the best improvements in glycemia are overnight. I’m hoping that this one shows some nice improvements in daytime glycemia as well. Stay tuned and I’ll let you know once I’ve been using it.
Next, it has adjustable targets down to 100. This is the lowest target for any hybrid closed-loop system. It has an extended-wear infusion set that lasts for 7 days. This infusion set is already available but works with this new system.
Finally, it has a new sensor. It looks like the old sensors, but it’s the Guardian 4, which requires much fewer finger sticks. Now, I’m not entirely sure about how often one has to do a finger stick. I know one has to do with finger sticking to initiate auto mode, or what they call SmartGuard, but I don’t know whether you ever have to do it again. I know for sure that you have to do it again if you fall out of the automated mode into manual mode. Once you’re in SmartGuard, I believe there are no further finger-stick calibrations required.
If people are already on the 770G system, this is just a software update that is presumably easy to upgrade to the 780G. Now, the physical pieces ... If someone doesn’t already have the Guardian 4 sensor or the extended-wear infusion set, they’ll have to get those. The software update to make the 770G increase to the 780G should just come through the cloud. I don’t know when that’s going to happen.
I do know that preorders for this system, if you want to buy the new physical system, start on May 15. The shipping of the new 780G system should occur in the United States toward the end of this summer.
I’m so excited. I think this is really going to benefit my patients. I can’t wait to start using it and letting patients see how these algorithms work and how they really help patients improve their glucose control.
Anne L. Peters, MD, is a professor of medicine at the University of Southern California, Los Angeles, and director of the USC clinical diabetes programs. She reported conflicts of interest with Abbott Diabetes Care, Becton Dickinson, Boehringer Ingelheim, Eli Lilly, Lexicon Pharmaceuticals, Livongo, Medscape, Merck, Novo Nordisk, Omada Health, OptumHealth, Sanofi, Zafgen, Dexcom, MannKind, and AstraZeneca.
A version of this article first appeared on Medscape.com.
Statin misinformation on social media flagged by AI
Using artificial intelligence to analyze large amounts of information from social media platforms generated some novel insights into public perceptions about statins, results of a new study show.
The study, which used AI to analyze discussions about statins on the social media platform Reddit, corroborated previously documented reasons for statin hesitancy, including adverse effect profiles and general disenfranchisement with health care.
But it also found novel points of discourse, including linking statins to COVID-19 outcomes and the role of cholesterol, statins, and the ketogenic diet.
“We used AI to tell us what is being discussed about statins on social media and to quantify the information in topics that people think are important,” senior study author Fatima Rodriguez, MD, MPH, Stanford (Calif.) University School of Medicine, said in an interview.
“Some of the themes were surprising to us. While we expected discussion on side effects, we were surprised to see so much discussion refuting the idea that increased levels of LDL were detrimental. There were also a large amount of posts on statin use being correlated to COVID outcomes. Our findings show how widespread this misinformation is,” she said.
“As a preventative cardiologist, I spend a lot of my time trying to get patients to take statins, but patients often rely on social media for information, and this can contain a lot of misinformation. People tend to be more honest on online forums than they are in the doctor’s office, so they are probably asking the questions and having discussions on subjects they really care about. So, understanding what is being discussed on social media is very valuable information for us as clinicians.”
The study was published online in JAMA Network Open.
The researchers analyzed all statin-related discussions on Reddit that were dated between Jan. 1, 2009, and July 12, 2022. Statin- and cholesterol-focused communities were identified to create a list of statin-related discussions. An AI pipeline was developed to cluster these discussions into specific topics and overarching thematic groups.
A total of 10,233 unique statin-related discussions and 5,188 unique authors were identified. A total of 100 discussion topics were identified and classified into six overarching thematic groups: (1) ketogenic diets, diabetes, supplements, and statins; (2) statin adverse effects; (3) statin hesitancy; (4) clinical trial appraisals; (5) pharmaceutical industry bias and statins; and (6) red yeast rice and statins.
Several examples of statin-related misinformation were identified, including distrust of the hypothesis that LDL-C has a causal association with heart disease. Discussions included quotes such as, “I think LDL is pretty much irrelevant. Your HDL and triglycerides are far more important.”
Other topics suggested that certain natural supplements would be an acceptable alternative to statins. Quotes included: “Red yeast rice is a statin basically, by the way,” and “statins are basically mycotoxins and deplete you of fat-soluble nutrients, like coQ10, vit D, K, A and E, and in all likelihood through these depletions worsen cardiovascular health.”
The researchers also looked at temporal trends and found that these sorts of discussions have increased over time.
One of the common themes identified was using the ketogenic diet phenomenon as an argument against increased cholesterol levels being bad for health.
Dr. Rodriguez elaborated: “People think the ketogenic diet is healthy as they lose weight on it. And as it can be associated with a small increase in LDL cholesterol, there was a lot of opinion that this meant increasing LDL was a good thing.”
The researchers also conducted a sentiment analysis, which designated topics as positive, negative, or neutral with regard to statins.
“We found that almost no topic was positive. Everything was either neutral or negative. This is pretty consistent with what we are seeing around hesitancy in clinical practice, but you would think that maybe a few people may have a positive view on statins,” Dr. Rodriguez commented.
“One of the problems with statins and lowering cholesterol is that it takes a long time to see a benefit, but this misinformation will result in some people not taking their medication,” she added.
Dr. Rodriguez noted that in this study AI is augmenting, not replacing, what clinicians and researchers do. “But it is a valuable tool to scan a large volume of information, and we have shown here it can generate new insights that we may not have thought of. It’s important to know what’s out there so we can try and combat it.”
She pointed out that patients don’t read the medical literature showing the benefits of statins but rather rely on social media for their information.
“We need to understand all sorts of patient engagement and use the same tools to combat this misinformation. We have a responsibility to try and stop dangerous and false information from being propagated,” she commented.
“These drugs are clearly not dangerous when used in line with clinical guidelines, and they have been proven to have multiple benefits again and again, but we don’t see those kinds of discussions in the community at all. We as clinicians need to use social media and AI to give out the right information. This could start to combat all the misinformation out there.”
A version of this article first appeared on Medscape.com.
Using artificial intelligence to analyze large amounts of information from social media platforms generated some novel insights into public perceptions about statins, results of a new study show.
The study, which used AI to analyze discussions about statins on the social media platform Reddit, corroborated previously documented reasons for statin hesitancy, including adverse effect profiles and general disenfranchisement with health care.
But it also found novel points of discourse, including linking statins to COVID-19 outcomes and the role of cholesterol, statins, and the ketogenic diet.
“We used AI to tell us what is being discussed about statins on social media and to quantify the information in topics that people think are important,” senior study author Fatima Rodriguez, MD, MPH, Stanford (Calif.) University School of Medicine, said in an interview.
“Some of the themes were surprising to us. While we expected discussion on side effects, we were surprised to see so much discussion refuting the idea that increased levels of LDL were detrimental. There were also a large amount of posts on statin use being correlated to COVID outcomes. Our findings show how widespread this misinformation is,” she said.
“As a preventative cardiologist, I spend a lot of my time trying to get patients to take statins, but patients often rely on social media for information, and this can contain a lot of misinformation. People tend to be more honest on online forums than they are in the doctor’s office, so they are probably asking the questions and having discussions on subjects they really care about. So, understanding what is being discussed on social media is very valuable information for us as clinicians.”
The study was published online in JAMA Network Open.
The researchers analyzed all statin-related discussions on Reddit that were dated between Jan. 1, 2009, and July 12, 2022. Statin- and cholesterol-focused communities were identified to create a list of statin-related discussions. An AI pipeline was developed to cluster these discussions into specific topics and overarching thematic groups.
A total of 10,233 unique statin-related discussions and 5,188 unique authors were identified. A total of 100 discussion topics were identified and classified into six overarching thematic groups: (1) ketogenic diets, diabetes, supplements, and statins; (2) statin adverse effects; (3) statin hesitancy; (4) clinical trial appraisals; (5) pharmaceutical industry bias and statins; and (6) red yeast rice and statins.
Several examples of statin-related misinformation were identified, including distrust of the hypothesis that LDL-C has a causal association with heart disease. Discussions included quotes such as, “I think LDL is pretty much irrelevant. Your HDL and triglycerides are far more important.”
Other topics suggested that certain natural supplements would be an acceptable alternative to statins. Quotes included: “Red yeast rice is a statin basically, by the way,” and “statins are basically mycotoxins and deplete you of fat-soluble nutrients, like coQ10, vit D, K, A and E, and in all likelihood through these depletions worsen cardiovascular health.”
The researchers also looked at temporal trends and found that these sorts of discussions have increased over time.
One of the common themes identified was using the ketogenic diet phenomenon as an argument against increased cholesterol levels being bad for health.
Dr. Rodriguez elaborated: “People think the ketogenic diet is healthy as they lose weight on it. And as it can be associated with a small increase in LDL cholesterol, there was a lot of opinion that this meant increasing LDL was a good thing.”
The researchers also conducted a sentiment analysis, which designated topics as positive, negative, or neutral with regard to statins.
“We found that almost no topic was positive. Everything was either neutral or negative. This is pretty consistent with what we are seeing around hesitancy in clinical practice, but you would think that maybe a few people may have a positive view on statins,” Dr. Rodriguez commented.
“One of the problems with statins and lowering cholesterol is that it takes a long time to see a benefit, but this misinformation will result in some people not taking their medication,” she added.
Dr. Rodriguez noted that in this study AI is augmenting, not replacing, what clinicians and researchers do. “But it is a valuable tool to scan a large volume of information, and we have shown here it can generate new insights that we may not have thought of. It’s important to know what’s out there so we can try and combat it.”
She pointed out that patients don’t read the medical literature showing the benefits of statins but rather rely on social media for their information.
“We need to understand all sorts of patient engagement and use the same tools to combat this misinformation. We have a responsibility to try and stop dangerous and false information from being propagated,” she commented.
“These drugs are clearly not dangerous when used in line with clinical guidelines, and they have been proven to have multiple benefits again and again, but we don’t see those kinds of discussions in the community at all. We as clinicians need to use social media and AI to give out the right information. This could start to combat all the misinformation out there.”
A version of this article first appeared on Medscape.com.
Using artificial intelligence to analyze large amounts of information from social media platforms generated some novel insights into public perceptions about statins, results of a new study show.
The study, which used AI to analyze discussions about statins on the social media platform Reddit, corroborated previously documented reasons for statin hesitancy, including adverse effect profiles and general disenfranchisement with health care.
But it also found novel points of discourse, including linking statins to COVID-19 outcomes and the role of cholesterol, statins, and the ketogenic diet.
“We used AI to tell us what is being discussed about statins on social media and to quantify the information in topics that people think are important,” senior study author Fatima Rodriguez, MD, MPH, Stanford (Calif.) University School of Medicine, said in an interview.
“Some of the themes were surprising to us. While we expected discussion on side effects, we were surprised to see so much discussion refuting the idea that increased levels of LDL were detrimental. There were also a large amount of posts on statin use being correlated to COVID outcomes. Our findings show how widespread this misinformation is,” she said.
“As a preventative cardiologist, I spend a lot of my time trying to get patients to take statins, but patients often rely on social media for information, and this can contain a lot of misinformation. People tend to be more honest on online forums than they are in the doctor’s office, so they are probably asking the questions and having discussions on subjects they really care about. So, understanding what is being discussed on social media is very valuable information for us as clinicians.”
The study was published online in JAMA Network Open.
The researchers analyzed all statin-related discussions on Reddit that were dated between Jan. 1, 2009, and July 12, 2022. Statin- and cholesterol-focused communities were identified to create a list of statin-related discussions. An AI pipeline was developed to cluster these discussions into specific topics and overarching thematic groups.
A total of 10,233 unique statin-related discussions and 5,188 unique authors were identified. A total of 100 discussion topics were identified and classified into six overarching thematic groups: (1) ketogenic diets, diabetes, supplements, and statins; (2) statin adverse effects; (3) statin hesitancy; (4) clinical trial appraisals; (5) pharmaceutical industry bias and statins; and (6) red yeast rice and statins.
Several examples of statin-related misinformation were identified, including distrust of the hypothesis that LDL-C has a causal association with heart disease. Discussions included quotes such as, “I think LDL is pretty much irrelevant. Your HDL and triglycerides are far more important.”
Other topics suggested that certain natural supplements would be an acceptable alternative to statins. Quotes included: “Red yeast rice is a statin basically, by the way,” and “statins are basically mycotoxins and deplete you of fat-soluble nutrients, like coQ10, vit D, K, A and E, and in all likelihood through these depletions worsen cardiovascular health.”
The researchers also looked at temporal trends and found that these sorts of discussions have increased over time.
One of the common themes identified was using the ketogenic diet phenomenon as an argument against increased cholesterol levels being bad for health.
Dr. Rodriguez elaborated: “People think the ketogenic diet is healthy as they lose weight on it. And as it can be associated with a small increase in LDL cholesterol, there was a lot of opinion that this meant increasing LDL was a good thing.”
The researchers also conducted a sentiment analysis, which designated topics as positive, negative, or neutral with regard to statins.
“We found that almost no topic was positive. Everything was either neutral or negative. This is pretty consistent with what we are seeing around hesitancy in clinical practice, but you would think that maybe a few people may have a positive view on statins,” Dr. Rodriguez commented.
“One of the problems with statins and lowering cholesterol is that it takes a long time to see a benefit, but this misinformation will result in some people not taking their medication,” she added.
Dr. Rodriguez noted that in this study AI is augmenting, not replacing, what clinicians and researchers do. “But it is a valuable tool to scan a large volume of information, and we have shown here it can generate new insights that we may not have thought of. It’s important to know what’s out there so we can try and combat it.”
She pointed out that patients don’t read the medical literature showing the benefits of statins but rather rely on social media for their information.
“We need to understand all sorts of patient engagement and use the same tools to combat this misinformation. We have a responsibility to try and stop dangerous and false information from being propagated,” she commented.
“These drugs are clearly not dangerous when used in line with clinical guidelines, and they have been proven to have multiple benefits again and again, but we don’t see those kinds of discussions in the community at all. We as clinicians need to use social media and AI to give out the right information. This could start to combat all the misinformation out there.”
A version of this article first appeared on Medscape.com.
FROM JAMA NETWORK OPEN
Stroke scale cutoff might not be ideal guide for ordering CTA and detecting large vessel occlusions
BOSTON – (LVO), according to large body of data presented at the 2023 annual meeting of the American Academy of Neurology.
If the goal is not to miss any LVOs, there is no NIHSS score below which these do not occur, according to Theresa Sevilis, DO, regional medical director, TeleSpecialists, Fort Myers, Fla.
For example, her evaluation of a large and nationally representative dataset shows that more than 10% of the LVOs eventually identified and accepted for intervention would be missed with a cutoff of NIHSS score of 6 or higher. Moving the cutoff NIHSS score to 4 or greater, 6% of LVOs among the 23,166 strokes evaluated would have gone undetected.
“The current guidelines do not address low NIHSS score largely due to a paucity of data,” according to Dr. Sevilis, who showed data indicating that there is great variation among institutions in regard to ordering computed tomography angiography (CTA). She indicated that CTA is the current imaging standard for detecting LVO.
Large prospective dataset
The data for this study were derived from the TeleCare database, which captures acute stroke consultations in the emergency departments in 227 facilities in 27 states. Stroke consultations over a 6-month period from July through December 2021 were evaluated. The prospectively collected data were subjected to a multivariate analysis to determine the odds ratio for a CTA performed and LVO found at each NIHSS score of 0 to 5. Scores 6 or above served as the reference.
“Only consults performed within 24 hours [of presentation] were included,” Dr. Sevilis said.
After excluding cases in which no NIHSS score was captured, which represented less than 1% of cases, more than 10,500 cases underwent CTA, providing a rate of 45.5%. The rate of CTA for the whole dataset was 45.5%. Of the study population, 24.6% had a NIHSS score of 6 or above.
“When you are discussing when to perform CTA in patients with a low NIHSS score, you are discussing the majority of patients,” Dr. Sevilis said.
Of those with a NIHSS stroke of 6 or below, 28.2% had a score of 0. Not surprisingly, these were the least likely to have a CTA performed on the basis of an odds ratio of 0.14 and the least likely to have a LVO detected (OR, 0.1). With the exception of a NIHSS stroke score of 1, the likelihood of CTA and LVO climbed incrementally with higher stroke scores. These odds ratios were, respectively, 0.16 and 0.09 for a score of 1; 0.27 and 0.16 for a score of 2; 0.33 and 0.14 for a score of 3; 0.49 and 0.24 for a score of 4; and 0.71 and 0.27 for a score of 5.
In the group with NIHSS score of 6 or above, 24.1% were found to have an LVO. Of these, the proportion accepted for a mechanical thrombectomy was less than half. The intervention acceptance rate for mechanical intervention among LVOs in patients with lower NIHSS scores again fell incrementally by score. The acceptance rate was about 35% among LVO patients with a NIHSS score of 3 or 4 and 25% for those with a score of 0-2.
The interpretation of these data “depends on goals,” Dr. Sevilis said. “If the goal is to not miss a single LVO, then it is important to consider the balance between benefits and risks.”
No consistent cutoff
In participating facilities, the protocol for considering CTA to detect and treat LVOs ranges from neurologist choice to cutoffs of NIHSS scores of 2, 4, and 6, according to Dr. Sevilis. Where the data suggest that a cutoff of 4 or above might be reasonable, she said that NIHSS scoring is not a useful tool for those “who do not want to miss any LVOs.”
These data are based on emergency room stroke consultations and not on confirmed strokes,” Dr. Sevilis emphasized. Indeed, she noted that the final discharge diagnosis was not available. Recognizing that the analysis was not performed on a population with confirmed strokes is particularly important for understanding the limited rate of CTAs performed even in those with relatively high NIHSS scores. She noted this could be explained by many different reasons, including suspicion of hemorrhage or clinical features that took the workup in a different direction.
Reconsidering protocols
Based on the large sample size, Dr. Sevilis contended that it is likely that these data are representative, but she considers this study a first step toward considering protocols and developing guidelines for addressing stroke alerts in the emergency department.
A more important step will be ongoing trials designed specifically to generate data to answer this question. Pascal Jabbour, MD, chief of the division of neurovascular and endovascular neurosurgery, Thomas Jefferson University Hospitals, Philadelphia, is participating in one of these trials. He agreed with the premise that better evidence-based criteria are needed when evaluating acute stroke patients with a potential LVO.
The trial in which he is a coinvestigator, called ENDOLOW, is testing the hypothesis that outcomes will be better if acute stroke patients with a LVO and a low baseline NIHSS score (< 5) are treated with immediate thrombectomy rather than medical management. If this hypothesis is confirmed in the randomized ENDOLOW, it will provide an evidence basis for an approach already being practiced at some centers.
“There should be a very low threshold for CTA,” said Dr. Jabbour in an interview. This imaging “takes less than 2 minutes and it can provide the basis for a life-saving endovascular thrombectomy if a LVO is found.”
It is already well known that LVO is not restricted only to patients with an elevated NIHSS score, he said.
For determining whether to order a CTA, “I do not agree with NIHSS score of 6 or above. There is no absolute number below which risk of missing a LVO is eliminated,” Dr. Jabbour said. He also argued against relying on NIHSS score without considering other clinical features, particularly cortical signs, which should raise suspicion of a LVO regardless of NIHSS score.
One problem is that NIHSS scores are not static. Decompensation can be rapid with the NIHSS score quickly climbing. When this happens, the delay in treatment might lead to a preventable adverse outcome.
“There is a change in the paradigm now that we have more evidence of a benefit from aggressive treatment in the right candidates,” according to Dr. Jabbour, referring to the recently published SELECT2 trial. In that trial, on which Dr. Jabbour served as a coauthor, patients with LVO and large territory infarct were randomized to thrombectomy or medical care within 24 hours of a stroke. It was stopped early for efficacy because of the increased functional independence (20% vs. 7%) in the surgical intervention group.
If the ongoing trials establish better criteria for ruling in or out the presence of LVO in patients with acute stroke, Dr. Jabbour predicted that guidelines will be written to standardize practice.
Dr. Sevilis reports no potential conflicts of interest. Dr. Jabbour has financial relationships with Cerenovus, Medtronic, and Microvention.
BOSTON – (LVO), according to large body of data presented at the 2023 annual meeting of the American Academy of Neurology.
If the goal is not to miss any LVOs, there is no NIHSS score below which these do not occur, according to Theresa Sevilis, DO, regional medical director, TeleSpecialists, Fort Myers, Fla.
For example, her evaluation of a large and nationally representative dataset shows that more than 10% of the LVOs eventually identified and accepted for intervention would be missed with a cutoff of NIHSS score of 6 or higher. Moving the cutoff NIHSS score to 4 or greater, 6% of LVOs among the 23,166 strokes evaluated would have gone undetected.
“The current guidelines do not address low NIHSS score largely due to a paucity of data,” according to Dr. Sevilis, who showed data indicating that there is great variation among institutions in regard to ordering computed tomography angiography (CTA). She indicated that CTA is the current imaging standard for detecting LVO.
Large prospective dataset
The data for this study were derived from the TeleCare database, which captures acute stroke consultations in the emergency departments in 227 facilities in 27 states. Stroke consultations over a 6-month period from July through December 2021 were evaluated. The prospectively collected data were subjected to a multivariate analysis to determine the odds ratio for a CTA performed and LVO found at each NIHSS score of 0 to 5. Scores 6 or above served as the reference.
“Only consults performed within 24 hours [of presentation] were included,” Dr. Sevilis said.
After excluding cases in which no NIHSS score was captured, which represented less than 1% of cases, more than 10,500 cases underwent CTA, providing a rate of 45.5%. The rate of CTA for the whole dataset was 45.5%. Of the study population, 24.6% had a NIHSS score of 6 or above.
“When you are discussing when to perform CTA in patients with a low NIHSS score, you are discussing the majority of patients,” Dr. Sevilis said.
Of those with a NIHSS stroke of 6 or below, 28.2% had a score of 0. Not surprisingly, these were the least likely to have a CTA performed on the basis of an odds ratio of 0.14 and the least likely to have a LVO detected (OR, 0.1). With the exception of a NIHSS stroke score of 1, the likelihood of CTA and LVO climbed incrementally with higher stroke scores. These odds ratios were, respectively, 0.16 and 0.09 for a score of 1; 0.27 and 0.16 for a score of 2; 0.33 and 0.14 for a score of 3; 0.49 and 0.24 for a score of 4; and 0.71 and 0.27 for a score of 5.
In the group with NIHSS score of 6 or above, 24.1% were found to have an LVO. Of these, the proportion accepted for a mechanical thrombectomy was less than half. The intervention acceptance rate for mechanical intervention among LVOs in patients with lower NIHSS scores again fell incrementally by score. The acceptance rate was about 35% among LVO patients with a NIHSS score of 3 or 4 and 25% for those with a score of 0-2.
The interpretation of these data “depends on goals,” Dr. Sevilis said. “If the goal is to not miss a single LVO, then it is important to consider the balance between benefits and risks.”
No consistent cutoff
In participating facilities, the protocol for considering CTA to detect and treat LVOs ranges from neurologist choice to cutoffs of NIHSS scores of 2, 4, and 6, according to Dr. Sevilis. Where the data suggest that a cutoff of 4 or above might be reasonable, she said that NIHSS scoring is not a useful tool for those “who do not want to miss any LVOs.”
These data are based on emergency room stroke consultations and not on confirmed strokes,” Dr. Sevilis emphasized. Indeed, she noted that the final discharge diagnosis was not available. Recognizing that the analysis was not performed on a population with confirmed strokes is particularly important for understanding the limited rate of CTAs performed even in those with relatively high NIHSS scores. She noted this could be explained by many different reasons, including suspicion of hemorrhage or clinical features that took the workup in a different direction.
Reconsidering protocols
Based on the large sample size, Dr. Sevilis contended that it is likely that these data are representative, but she considers this study a first step toward considering protocols and developing guidelines for addressing stroke alerts in the emergency department.
A more important step will be ongoing trials designed specifically to generate data to answer this question. Pascal Jabbour, MD, chief of the division of neurovascular and endovascular neurosurgery, Thomas Jefferson University Hospitals, Philadelphia, is participating in one of these trials. He agreed with the premise that better evidence-based criteria are needed when evaluating acute stroke patients with a potential LVO.
The trial in which he is a coinvestigator, called ENDOLOW, is testing the hypothesis that outcomes will be better if acute stroke patients with a LVO and a low baseline NIHSS score (< 5) are treated with immediate thrombectomy rather than medical management. If this hypothesis is confirmed in the randomized ENDOLOW, it will provide an evidence basis for an approach already being practiced at some centers.
“There should be a very low threshold for CTA,” said Dr. Jabbour in an interview. This imaging “takes less than 2 minutes and it can provide the basis for a life-saving endovascular thrombectomy if a LVO is found.”
It is already well known that LVO is not restricted only to patients with an elevated NIHSS score, he said.
For determining whether to order a CTA, “I do not agree with NIHSS score of 6 or above. There is no absolute number below which risk of missing a LVO is eliminated,” Dr. Jabbour said. He also argued against relying on NIHSS score without considering other clinical features, particularly cortical signs, which should raise suspicion of a LVO regardless of NIHSS score.
One problem is that NIHSS scores are not static. Decompensation can be rapid with the NIHSS score quickly climbing. When this happens, the delay in treatment might lead to a preventable adverse outcome.
“There is a change in the paradigm now that we have more evidence of a benefit from aggressive treatment in the right candidates,” according to Dr. Jabbour, referring to the recently published SELECT2 trial. In that trial, on which Dr. Jabbour served as a coauthor, patients with LVO and large territory infarct were randomized to thrombectomy or medical care within 24 hours of a stroke. It was stopped early for efficacy because of the increased functional independence (20% vs. 7%) in the surgical intervention group.
If the ongoing trials establish better criteria for ruling in or out the presence of LVO in patients with acute stroke, Dr. Jabbour predicted that guidelines will be written to standardize practice.
Dr. Sevilis reports no potential conflicts of interest. Dr. Jabbour has financial relationships with Cerenovus, Medtronic, and Microvention.
BOSTON – (LVO), according to large body of data presented at the 2023 annual meeting of the American Academy of Neurology.
If the goal is not to miss any LVOs, there is no NIHSS score below which these do not occur, according to Theresa Sevilis, DO, regional medical director, TeleSpecialists, Fort Myers, Fla.
For example, her evaluation of a large and nationally representative dataset shows that more than 10% of the LVOs eventually identified and accepted for intervention would be missed with a cutoff of NIHSS score of 6 or higher. Moving the cutoff NIHSS score to 4 or greater, 6% of LVOs among the 23,166 strokes evaluated would have gone undetected.
“The current guidelines do not address low NIHSS score largely due to a paucity of data,” according to Dr. Sevilis, who showed data indicating that there is great variation among institutions in regard to ordering computed tomography angiography (CTA). She indicated that CTA is the current imaging standard for detecting LVO.
Large prospective dataset
The data for this study were derived from the TeleCare database, which captures acute stroke consultations in the emergency departments in 227 facilities in 27 states. Stroke consultations over a 6-month period from July through December 2021 were evaluated. The prospectively collected data were subjected to a multivariate analysis to determine the odds ratio for a CTA performed and LVO found at each NIHSS score of 0 to 5. Scores 6 or above served as the reference.
“Only consults performed within 24 hours [of presentation] were included,” Dr. Sevilis said.
After excluding cases in which no NIHSS score was captured, which represented less than 1% of cases, more than 10,500 cases underwent CTA, providing a rate of 45.5%. The rate of CTA for the whole dataset was 45.5%. Of the study population, 24.6% had a NIHSS score of 6 or above.
“When you are discussing when to perform CTA in patients with a low NIHSS score, you are discussing the majority of patients,” Dr. Sevilis said.
Of those with a NIHSS stroke of 6 or below, 28.2% had a score of 0. Not surprisingly, these were the least likely to have a CTA performed on the basis of an odds ratio of 0.14 and the least likely to have a LVO detected (OR, 0.1). With the exception of a NIHSS stroke score of 1, the likelihood of CTA and LVO climbed incrementally with higher stroke scores. These odds ratios were, respectively, 0.16 and 0.09 for a score of 1; 0.27 and 0.16 for a score of 2; 0.33 and 0.14 for a score of 3; 0.49 and 0.24 for a score of 4; and 0.71 and 0.27 for a score of 5.
In the group with NIHSS score of 6 or above, 24.1% were found to have an LVO. Of these, the proportion accepted for a mechanical thrombectomy was less than half. The intervention acceptance rate for mechanical intervention among LVOs in patients with lower NIHSS scores again fell incrementally by score. The acceptance rate was about 35% among LVO patients with a NIHSS score of 3 or 4 and 25% for those with a score of 0-2.
The interpretation of these data “depends on goals,” Dr. Sevilis said. “If the goal is to not miss a single LVO, then it is important to consider the balance between benefits and risks.”
No consistent cutoff
In participating facilities, the protocol for considering CTA to detect and treat LVOs ranges from neurologist choice to cutoffs of NIHSS scores of 2, 4, and 6, according to Dr. Sevilis. Where the data suggest that a cutoff of 4 or above might be reasonable, she said that NIHSS scoring is not a useful tool for those “who do not want to miss any LVOs.”
These data are based on emergency room stroke consultations and not on confirmed strokes,” Dr. Sevilis emphasized. Indeed, she noted that the final discharge diagnosis was not available. Recognizing that the analysis was not performed on a population with confirmed strokes is particularly important for understanding the limited rate of CTAs performed even in those with relatively high NIHSS scores. She noted this could be explained by many different reasons, including suspicion of hemorrhage or clinical features that took the workup in a different direction.
Reconsidering protocols
Based on the large sample size, Dr. Sevilis contended that it is likely that these data are representative, but she considers this study a first step toward considering protocols and developing guidelines for addressing stroke alerts in the emergency department.
A more important step will be ongoing trials designed specifically to generate data to answer this question. Pascal Jabbour, MD, chief of the division of neurovascular and endovascular neurosurgery, Thomas Jefferson University Hospitals, Philadelphia, is participating in one of these trials. He agreed with the premise that better evidence-based criteria are needed when evaluating acute stroke patients with a potential LVO.
The trial in which he is a coinvestigator, called ENDOLOW, is testing the hypothesis that outcomes will be better if acute stroke patients with a LVO and a low baseline NIHSS score (< 5) are treated with immediate thrombectomy rather than medical management. If this hypothesis is confirmed in the randomized ENDOLOW, it will provide an evidence basis for an approach already being practiced at some centers.
“There should be a very low threshold for CTA,” said Dr. Jabbour in an interview. This imaging “takes less than 2 minutes and it can provide the basis for a life-saving endovascular thrombectomy if a LVO is found.”
It is already well known that LVO is not restricted only to patients with an elevated NIHSS score, he said.
For determining whether to order a CTA, “I do not agree with NIHSS score of 6 or above. There is no absolute number below which risk of missing a LVO is eliminated,” Dr. Jabbour said. He also argued against relying on NIHSS score without considering other clinical features, particularly cortical signs, which should raise suspicion of a LVO regardless of NIHSS score.
One problem is that NIHSS scores are not static. Decompensation can be rapid with the NIHSS score quickly climbing. When this happens, the delay in treatment might lead to a preventable adverse outcome.
“There is a change in the paradigm now that we have more evidence of a benefit from aggressive treatment in the right candidates,” according to Dr. Jabbour, referring to the recently published SELECT2 trial. In that trial, on which Dr. Jabbour served as a coauthor, patients with LVO and large territory infarct were randomized to thrombectomy or medical care within 24 hours of a stroke. It was stopped early for efficacy because of the increased functional independence (20% vs. 7%) in the surgical intervention group.
If the ongoing trials establish better criteria for ruling in or out the presence of LVO in patients with acute stroke, Dr. Jabbour predicted that guidelines will be written to standardize practice.
Dr. Sevilis reports no potential conflicts of interest. Dr. Jabbour has financial relationships with Cerenovus, Medtronic, and Microvention.
FROM AAN 2023
Expert discusses which diets are best, based on the evidence
according to a speaker at the annual meeting of the American College of Physicians.
“Evidence from studies can help clinicians and their patients develop a successful dietary management plan and achieve optimal health,” said internist Michelle Hauser, MD, clinical associate professor at Stanford (Calif.) University. She also discussed evidence-based techniques to support patients in maintaining dietary modifications.
Predominantly plant‐based diets
Popular predominantly plant‐based diets include a Mediterranean diet, healthy vegetarian diet, predominantly whole-food plant‐based (WFPB) diet, and a dietary approach to stop hypertension (DASH).
The DASH diet was originally designed to help patients manage their blood pressure, but evidence suggests that it also can help adults with obesity lose weight. In contrast to the DASH diet, the Mediterranean diet is not low-fat and not very restrictive. Yet the evidence suggests that the Mediterranean diet is not only helpful for losing weight but also can reduce the risk of various chronic diseases, including obesity, type 2 diabetes, cardiovascular disease (CVD), and cancer, Dr. Hauser said. In addition, data suggest that the Mediterranean diet may reduce the risk of all-cause mortality and lower the levels of cholesterol.
“I like to highlight all these protective effects to my patients, because even if their goal is to lose weight, knowing that hard work pays off in additional ways can keep them motivated,” Dr. Hauser stated.
A healthy vegetarian diet and a WFPB diet are similar, and both are helpful in weight loss and management of total cholesterol and LDL‐C levels. Furthermore, healthy vegetarian and WFPB diets may reduce the risk of type 2 diabetes, CVD, and some cancers. Cohort study data suggest that progressively more vegetarian diets are associated with lower BMIs.
“My interpretation of these data is that predominantly plant-based diets rich in whole foods are healthful and can be done in a way that is sustainable for most,” said Dr. Hauser. However, this generally requires a lot of support at the outset to address gaps in knowledge, skills, and other potential barriers.
For example, she referred one obese patient at risk of diabetes and cardiovascular disease to a registered dietitian to develop a dietary plan. The patient also attended a behavioral medicine weight management program to learn strategies such as using smaller plates, and his family attended a healthy cooking class together to improve meal planning and cooking skills.
Time‐restricted feeding
There are numerous variations of time-restricted feeding, commonly referred to as intermittent fasting, but the principles are similar – limiting food intake to a specific window of time each day or week.
Although some studies have shown that time-restricted feeding may help patients reduce adiposity and improve lipid markers, most studies comparing time-restricted feeding to a calorie-restricted diet have shown little to no difference in weight-related outcomes, Dr. Hauser said.
These data suggest that time-restricted feeding may help patients with weight loss only if time restriction helps them reduce calorie intake. She also warned that time-restrictive feeding might cause late-night cravings and might not be helpful in individuals prone to food cravings.
Low‐carbohydrate and ketogenic diets
Losing muscle mass can prevent some people from dieting, but evidence suggests that a high-fat, very low-carbohydrate diet – also called a ketogenic diet – may help patients reduce weight and fat mass while preserving fat‐free mass, Dr. Hauser said.
The evidence regarding the usefulness of a low-carbohydrate (non-keto) diet is less clear because most studies compared it to a low-fat diet, and these two diets might lead to a similar extent of weight loss.
Rating the level of scientific evidence behind different diet options
Nutrition studies do no provide the same level of evidence as drug studies, said Dr. Hauser, because it is easier to conduct a randomized controlled trial of a drug versus placebo. Diets have many more variables, and it also takes much longer to observe most outcomes of a dietary change.
In addition, clinical trials of dietary interventions are typically short and focus on disease markers such as serum lipids and hemoglobin A1c levels. To obtain reliable information on the usefulness of a diet, researchers need to collect detailed health and lifestyle information from hundreds of thousands of people over several decades, which is not always feasible. “This is why meta-analyses of pooled dietary study data are more likely to yield dependable findings,” she noted.
Getting to know patients is essential to help them maintain diet modifications
When developing a diet plan for a patient, it is important to consider the sustainability of a dietary pattern. “The benefits of any healthy dietary change will only last as long as they can be maintained,” said Dr. Hauser. “Counseling someone on choosing an appropriate long-term dietary pattern requires getting to know them – taste preferences, food traditions, barriers, facilitators, food access, and time and cost restrictions.”
In an interview after the session, David Bittleman, MD, an internist at Veterans Affairs San Diego Health Care System, agreed that getting to know patients is essential for successfully advising them on diet.
“I always start developing a diet plan by trying to find out what [a patient’s] diet is like and what their goals are. I need to know what they are already doing in order to make suggestions about what they can do to make their diet healthier,” he said.
When asked about her approach to supporting patients in the long term, Dr. Hauser said that she recommends sequential, gradual changes. Dr. Hauser added that she suggests her patients prioritize implementing dietary changes that they are confident they can maintain.
Dr. Hauser and Dr. Bittleman report no relevant financial relationships.
according to a speaker at the annual meeting of the American College of Physicians.
“Evidence from studies can help clinicians and their patients develop a successful dietary management plan and achieve optimal health,” said internist Michelle Hauser, MD, clinical associate professor at Stanford (Calif.) University. She also discussed evidence-based techniques to support patients in maintaining dietary modifications.
Predominantly plant‐based diets
Popular predominantly plant‐based diets include a Mediterranean diet, healthy vegetarian diet, predominantly whole-food plant‐based (WFPB) diet, and a dietary approach to stop hypertension (DASH).
The DASH diet was originally designed to help patients manage their blood pressure, but evidence suggests that it also can help adults with obesity lose weight. In contrast to the DASH diet, the Mediterranean diet is not low-fat and not very restrictive. Yet the evidence suggests that the Mediterranean diet is not only helpful for losing weight but also can reduce the risk of various chronic diseases, including obesity, type 2 diabetes, cardiovascular disease (CVD), and cancer, Dr. Hauser said. In addition, data suggest that the Mediterranean diet may reduce the risk of all-cause mortality and lower the levels of cholesterol.
“I like to highlight all these protective effects to my patients, because even if their goal is to lose weight, knowing that hard work pays off in additional ways can keep them motivated,” Dr. Hauser stated.
A healthy vegetarian diet and a WFPB diet are similar, and both are helpful in weight loss and management of total cholesterol and LDL‐C levels. Furthermore, healthy vegetarian and WFPB diets may reduce the risk of type 2 diabetes, CVD, and some cancers. Cohort study data suggest that progressively more vegetarian diets are associated with lower BMIs.
“My interpretation of these data is that predominantly plant-based diets rich in whole foods are healthful and can be done in a way that is sustainable for most,” said Dr. Hauser. However, this generally requires a lot of support at the outset to address gaps in knowledge, skills, and other potential barriers.
For example, she referred one obese patient at risk of diabetes and cardiovascular disease to a registered dietitian to develop a dietary plan. The patient also attended a behavioral medicine weight management program to learn strategies such as using smaller plates, and his family attended a healthy cooking class together to improve meal planning and cooking skills.
Time‐restricted feeding
There are numerous variations of time-restricted feeding, commonly referred to as intermittent fasting, but the principles are similar – limiting food intake to a specific window of time each day or week.
Although some studies have shown that time-restricted feeding may help patients reduce adiposity and improve lipid markers, most studies comparing time-restricted feeding to a calorie-restricted diet have shown little to no difference in weight-related outcomes, Dr. Hauser said.
These data suggest that time-restricted feeding may help patients with weight loss only if time restriction helps them reduce calorie intake. She also warned that time-restrictive feeding might cause late-night cravings and might not be helpful in individuals prone to food cravings.
Low‐carbohydrate and ketogenic diets
Losing muscle mass can prevent some people from dieting, but evidence suggests that a high-fat, very low-carbohydrate diet – also called a ketogenic diet – may help patients reduce weight and fat mass while preserving fat‐free mass, Dr. Hauser said.
The evidence regarding the usefulness of a low-carbohydrate (non-keto) diet is less clear because most studies compared it to a low-fat diet, and these two diets might lead to a similar extent of weight loss.
Rating the level of scientific evidence behind different diet options
Nutrition studies do no provide the same level of evidence as drug studies, said Dr. Hauser, because it is easier to conduct a randomized controlled trial of a drug versus placebo. Diets have many more variables, and it also takes much longer to observe most outcomes of a dietary change.
In addition, clinical trials of dietary interventions are typically short and focus on disease markers such as serum lipids and hemoglobin A1c levels. To obtain reliable information on the usefulness of a diet, researchers need to collect detailed health and lifestyle information from hundreds of thousands of people over several decades, which is not always feasible. “This is why meta-analyses of pooled dietary study data are more likely to yield dependable findings,” she noted.
Getting to know patients is essential to help them maintain diet modifications
When developing a diet plan for a patient, it is important to consider the sustainability of a dietary pattern. “The benefits of any healthy dietary change will only last as long as they can be maintained,” said Dr. Hauser. “Counseling someone on choosing an appropriate long-term dietary pattern requires getting to know them – taste preferences, food traditions, barriers, facilitators, food access, and time and cost restrictions.”
In an interview after the session, David Bittleman, MD, an internist at Veterans Affairs San Diego Health Care System, agreed that getting to know patients is essential for successfully advising them on diet.
“I always start developing a diet plan by trying to find out what [a patient’s] diet is like and what their goals are. I need to know what they are already doing in order to make suggestions about what they can do to make their diet healthier,” he said.
When asked about her approach to supporting patients in the long term, Dr. Hauser said that she recommends sequential, gradual changes. Dr. Hauser added that she suggests her patients prioritize implementing dietary changes that they are confident they can maintain.
Dr. Hauser and Dr. Bittleman report no relevant financial relationships.
according to a speaker at the annual meeting of the American College of Physicians.
“Evidence from studies can help clinicians and their patients develop a successful dietary management plan and achieve optimal health,” said internist Michelle Hauser, MD, clinical associate professor at Stanford (Calif.) University. She also discussed evidence-based techniques to support patients in maintaining dietary modifications.
Predominantly plant‐based diets
Popular predominantly plant‐based diets include a Mediterranean diet, healthy vegetarian diet, predominantly whole-food plant‐based (WFPB) diet, and a dietary approach to stop hypertension (DASH).
The DASH diet was originally designed to help patients manage their blood pressure, but evidence suggests that it also can help adults with obesity lose weight. In contrast to the DASH diet, the Mediterranean diet is not low-fat and not very restrictive. Yet the evidence suggests that the Mediterranean diet is not only helpful for losing weight but also can reduce the risk of various chronic diseases, including obesity, type 2 diabetes, cardiovascular disease (CVD), and cancer, Dr. Hauser said. In addition, data suggest that the Mediterranean diet may reduce the risk of all-cause mortality and lower the levels of cholesterol.
“I like to highlight all these protective effects to my patients, because even if their goal is to lose weight, knowing that hard work pays off in additional ways can keep them motivated,” Dr. Hauser stated.
A healthy vegetarian diet and a WFPB diet are similar, and both are helpful in weight loss and management of total cholesterol and LDL‐C levels. Furthermore, healthy vegetarian and WFPB diets may reduce the risk of type 2 diabetes, CVD, and some cancers. Cohort study data suggest that progressively more vegetarian diets are associated with lower BMIs.
“My interpretation of these data is that predominantly plant-based diets rich in whole foods are healthful and can be done in a way that is sustainable for most,” said Dr. Hauser. However, this generally requires a lot of support at the outset to address gaps in knowledge, skills, and other potential barriers.
For example, she referred one obese patient at risk of diabetes and cardiovascular disease to a registered dietitian to develop a dietary plan. The patient also attended a behavioral medicine weight management program to learn strategies such as using smaller plates, and his family attended a healthy cooking class together to improve meal planning and cooking skills.
Time‐restricted feeding
There are numerous variations of time-restricted feeding, commonly referred to as intermittent fasting, but the principles are similar – limiting food intake to a specific window of time each day or week.
Although some studies have shown that time-restricted feeding may help patients reduce adiposity and improve lipid markers, most studies comparing time-restricted feeding to a calorie-restricted diet have shown little to no difference in weight-related outcomes, Dr. Hauser said.
These data suggest that time-restricted feeding may help patients with weight loss only if time restriction helps them reduce calorie intake. She also warned that time-restrictive feeding might cause late-night cravings and might not be helpful in individuals prone to food cravings.
Low‐carbohydrate and ketogenic diets
Losing muscle mass can prevent some people from dieting, but evidence suggests that a high-fat, very low-carbohydrate diet – also called a ketogenic diet – may help patients reduce weight and fat mass while preserving fat‐free mass, Dr. Hauser said.
The evidence regarding the usefulness of a low-carbohydrate (non-keto) diet is less clear because most studies compared it to a low-fat diet, and these two diets might lead to a similar extent of weight loss.
Rating the level of scientific evidence behind different diet options
Nutrition studies do no provide the same level of evidence as drug studies, said Dr. Hauser, because it is easier to conduct a randomized controlled trial of a drug versus placebo. Diets have many more variables, and it also takes much longer to observe most outcomes of a dietary change.
In addition, clinical trials of dietary interventions are typically short and focus on disease markers such as serum lipids and hemoglobin A1c levels. To obtain reliable information on the usefulness of a diet, researchers need to collect detailed health and lifestyle information from hundreds of thousands of people over several decades, which is not always feasible. “This is why meta-analyses of pooled dietary study data are more likely to yield dependable findings,” she noted.
Getting to know patients is essential to help them maintain diet modifications
When developing a diet plan for a patient, it is important to consider the sustainability of a dietary pattern. “The benefits of any healthy dietary change will only last as long as they can be maintained,” said Dr. Hauser. “Counseling someone on choosing an appropriate long-term dietary pattern requires getting to know them – taste preferences, food traditions, barriers, facilitators, food access, and time and cost restrictions.”
In an interview after the session, David Bittleman, MD, an internist at Veterans Affairs San Diego Health Care System, agreed that getting to know patients is essential for successfully advising them on diet.
“I always start developing a diet plan by trying to find out what [a patient’s] diet is like and what their goals are. I need to know what they are already doing in order to make suggestions about what they can do to make their diet healthier,” he said.
When asked about her approach to supporting patients in the long term, Dr. Hauser said that she recommends sequential, gradual changes. Dr. Hauser added that she suggests her patients prioritize implementing dietary changes that they are confident they can maintain.
Dr. Hauser and Dr. Bittleman report no relevant financial relationships.
AT INTERNAL MEDICINE 2023
LAA closure outcomes improve with CCTA: Swiss-Apero subanalysis
The largest multicenter randomized trial to date of CT angiography before left atrial appendage closure (LAAC) to treat atrial fibrillation has added to the evidence that the imaging technique on top of transesophageal echocardiography achieves a higher degree of short- and long-term success than TEE alone.
The results are from a subanalysis of the Swiss-Apero trial, a randomized comparative trial of the Watchman and Amulet devices for LAAC, which published results in Circulation.
“Our observational data support to use of CT for LAAC procedure planning,” senior investigator Lorenz Räber, MD, PhD, said in an interview. “This is not very surprising given the high variability of the LAA anatomy and the associated complexity of the procedure.” Dr. Räber is director of the catheterization laboratory at Inselspital, Bern (Switzerland) University Hospital.
The study, published online in JACC: Cardiovascular Interventions, included 219 LAAC procedures in which the operators performed coronary CT angiography (CTTA) beforehand. When the investigators designed the study, LAAC procedures were typically planned using TEE alone, and so participating operators were blinded to preprocedural CCTA imaging. Soon after the study launch, European cardiology societies issued a consensus statement that included CCTA as an option for procedure planning. So the Swiss-Apero investigators changed the subanalysis protocol to unblind the operators – that is, they were permitted to plan LAAC procedures with CCTA imaging in addition to TEE. In this subanalysis, most patients had implantation with blinding to CCTA (57.9% vs. 41.2%).
Study results
The subanalysis determined that operator unblinding to preprocedural CCTA resulted in better success with LAAC, both in the short term, at 93.5% vs. 81.1% (P = .009; adjusted odds ratio, 2.76; 95% confidence interval, 1.05-7.29; P = .40) and the long term, at 83.7% vs. 72.4% (P = .050; aOR, 2.12; 95% CI, 1.03-4.35; P = .041).
Dr. Räber noted that this is only the third study to date that examined the potential impact of preprocedural CCTA plus TEE. One was a small study of 24 consecutive LAAC procedures with the Watchman device that compared TEE alone and CCTA plus TEE, finding better outcomes in the group that had both imaging modalities . A larger, single-center cohort study of 485 LAAC Watchman procedures found that CCTA resulted in faster operation times and higher successful device implantation rates, but no significant difference in procedural complications.
Dr. Räber explained why his group’s subanalysis may have found a clinical benefit with CCTA on top of TEE. “Our study was much larger, as compared to the randomized clinical trial, and there was no selection bias as in the second study mentioned before, as operators did not have the option to decide whether or not to assess the CCTA prior to the procedure,” he said. “Finally, in the previous studies there was no random allocation of device type” – that is, Amulet versus Watchman.
One study limitation Dr. Räber noted was that significantly more patients in the blinded group were discharged with dual-antiplatelet therapy. “The lower rate of procedure complications observed in unblinded procedures was mostly driven by a lower number of major bleedings and in particular of pericardial tamponade,” he said. “We cannot therefore exclude that the higher percentage of patients under dual-antiplatelet therapy in the CCTA-blinded group might have favored this difference.”
However, he noted the investigators corrected their analysis to account for differences between the groups. “Importantly, the numerical excess in major procedural bleeding was observed within both the single-antiplatelet therapy and dual-antiplatelet therapy subgroups of the TEE-only group.”
In an accompanying editorial, coauthors Brian O’Neill, MD, and Dee Dee Wang, MD, both with the Center for Structural Heard Disease at Henry Ford Hospital in Detroit, noted that the Swiss-Apero subanalysis “reinforced” the benefit of CCTA before LAAC.
“This study demonstrated, for the first time, improved short- and long-term procedural success using CT in addition to TEE for left atrial appendage occlusion,” Dr. O’Neill said in an interview. “This particular study may serve as a guide to an adequately powered randomized trial of CT versus TEE in left atrial appendage occlusion.” Future LAAC trials should incorporate preprocedural CCTA.
Dr. O’Neill noted that, as a subanalysis of a randomized trial, the “results are hypothesis generating.” However, he added, “the results are in line with several previous studies of CT versus TEE in left atrial appendage occlusion.”
Dr Räber disclosed financial relationships with Abbott Vascular, Boston Scientific, Biotronik, Infraredx, Heartflow, Sanofi, Regeneron, Amgen, AstraZeneca, CSL Behring, Canon, Occlutech, and Vifor. Dr. O’Neill disclosed financial relationships with Edwards Lifesciences, Medtronic, and Abbott Vascular.
The largest multicenter randomized trial to date of CT angiography before left atrial appendage closure (LAAC) to treat atrial fibrillation has added to the evidence that the imaging technique on top of transesophageal echocardiography achieves a higher degree of short- and long-term success than TEE alone.
The results are from a subanalysis of the Swiss-Apero trial, a randomized comparative trial of the Watchman and Amulet devices for LAAC, which published results in Circulation.
“Our observational data support to use of CT for LAAC procedure planning,” senior investigator Lorenz Räber, MD, PhD, said in an interview. “This is not very surprising given the high variability of the LAA anatomy and the associated complexity of the procedure.” Dr. Räber is director of the catheterization laboratory at Inselspital, Bern (Switzerland) University Hospital.
The study, published online in JACC: Cardiovascular Interventions, included 219 LAAC procedures in which the operators performed coronary CT angiography (CTTA) beforehand. When the investigators designed the study, LAAC procedures were typically planned using TEE alone, and so participating operators were blinded to preprocedural CCTA imaging. Soon after the study launch, European cardiology societies issued a consensus statement that included CCTA as an option for procedure planning. So the Swiss-Apero investigators changed the subanalysis protocol to unblind the operators – that is, they were permitted to plan LAAC procedures with CCTA imaging in addition to TEE. In this subanalysis, most patients had implantation with blinding to CCTA (57.9% vs. 41.2%).
Study results
The subanalysis determined that operator unblinding to preprocedural CCTA resulted in better success with LAAC, both in the short term, at 93.5% vs. 81.1% (P = .009; adjusted odds ratio, 2.76; 95% confidence interval, 1.05-7.29; P = .40) and the long term, at 83.7% vs. 72.4% (P = .050; aOR, 2.12; 95% CI, 1.03-4.35; P = .041).
Dr. Räber noted that this is only the third study to date that examined the potential impact of preprocedural CCTA plus TEE. One was a small study of 24 consecutive LAAC procedures with the Watchman device that compared TEE alone and CCTA plus TEE, finding better outcomes in the group that had both imaging modalities . A larger, single-center cohort study of 485 LAAC Watchman procedures found that CCTA resulted in faster operation times and higher successful device implantation rates, but no significant difference in procedural complications.
Dr. Räber explained why his group’s subanalysis may have found a clinical benefit with CCTA on top of TEE. “Our study was much larger, as compared to the randomized clinical trial, and there was no selection bias as in the second study mentioned before, as operators did not have the option to decide whether or not to assess the CCTA prior to the procedure,” he said. “Finally, in the previous studies there was no random allocation of device type” – that is, Amulet versus Watchman.
One study limitation Dr. Räber noted was that significantly more patients in the blinded group were discharged with dual-antiplatelet therapy. “The lower rate of procedure complications observed in unblinded procedures was mostly driven by a lower number of major bleedings and in particular of pericardial tamponade,” he said. “We cannot therefore exclude that the higher percentage of patients under dual-antiplatelet therapy in the CCTA-blinded group might have favored this difference.”
However, he noted the investigators corrected their analysis to account for differences between the groups. “Importantly, the numerical excess in major procedural bleeding was observed within both the single-antiplatelet therapy and dual-antiplatelet therapy subgroups of the TEE-only group.”
In an accompanying editorial, coauthors Brian O’Neill, MD, and Dee Dee Wang, MD, both with the Center for Structural Heard Disease at Henry Ford Hospital in Detroit, noted that the Swiss-Apero subanalysis “reinforced” the benefit of CCTA before LAAC.
“This study demonstrated, for the first time, improved short- and long-term procedural success using CT in addition to TEE for left atrial appendage occlusion,” Dr. O’Neill said in an interview. “This particular study may serve as a guide to an adequately powered randomized trial of CT versus TEE in left atrial appendage occlusion.” Future LAAC trials should incorporate preprocedural CCTA.
Dr. O’Neill noted that, as a subanalysis of a randomized trial, the “results are hypothesis generating.” However, he added, “the results are in line with several previous studies of CT versus TEE in left atrial appendage occlusion.”
Dr Räber disclosed financial relationships with Abbott Vascular, Boston Scientific, Biotronik, Infraredx, Heartflow, Sanofi, Regeneron, Amgen, AstraZeneca, CSL Behring, Canon, Occlutech, and Vifor. Dr. O’Neill disclosed financial relationships with Edwards Lifesciences, Medtronic, and Abbott Vascular.
The largest multicenter randomized trial to date of CT angiography before left atrial appendage closure (LAAC) to treat atrial fibrillation has added to the evidence that the imaging technique on top of transesophageal echocardiography achieves a higher degree of short- and long-term success than TEE alone.
The results are from a subanalysis of the Swiss-Apero trial, a randomized comparative trial of the Watchman and Amulet devices for LAAC, which published results in Circulation.
“Our observational data support to use of CT for LAAC procedure planning,” senior investigator Lorenz Räber, MD, PhD, said in an interview. “This is not very surprising given the high variability of the LAA anatomy and the associated complexity of the procedure.” Dr. Räber is director of the catheterization laboratory at Inselspital, Bern (Switzerland) University Hospital.
The study, published online in JACC: Cardiovascular Interventions, included 219 LAAC procedures in which the operators performed coronary CT angiography (CTTA) beforehand. When the investigators designed the study, LAAC procedures were typically planned using TEE alone, and so participating operators were blinded to preprocedural CCTA imaging. Soon after the study launch, European cardiology societies issued a consensus statement that included CCTA as an option for procedure planning. So the Swiss-Apero investigators changed the subanalysis protocol to unblind the operators – that is, they were permitted to plan LAAC procedures with CCTA imaging in addition to TEE. In this subanalysis, most patients had implantation with blinding to CCTA (57.9% vs. 41.2%).
Study results
The subanalysis determined that operator unblinding to preprocedural CCTA resulted in better success with LAAC, both in the short term, at 93.5% vs. 81.1% (P = .009; adjusted odds ratio, 2.76; 95% confidence interval, 1.05-7.29; P = .40) and the long term, at 83.7% vs. 72.4% (P = .050; aOR, 2.12; 95% CI, 1.03-4.35; P = .041).
Dr. Räber noted that this is only the third study to date that examined the potential impact of preprocedural CCTA plus TEE. One was a small study of 24 consecutive LAAC procedures with the Watchman device that compared TEE alone and CCTA plus TEE, finding better outcomes in the group that had both imaging modalities . A larger, single-center cohort study of 485 LAAC Watchman procedures found that CCTA resulted in faster operation times and higher successful device implantation rates, but no significant difference in procedural complications.
Dr. Räber explained why his group’s subanalysis may have found a clinical benefit with CCTA on top of TEE. “Our study was much larger, as compared to the randomized clinical trial, and there was no selection bias as in the second study mentioned before, as operators did not have the option to decide whether or not to assess the CCTA prior to the procedure,” he said. “Finally, in the previous studies there was no random allocation of device type” – that is, Amulet versus Watchman.
One study limitation Dr. Räber noted was that significantly more patients in the blinded group were discharged with dual-antiplatelet therapy. “The lower rate of procedure complications observed in unblinded procedures was mostly driven by a lower number of major bleedings and in particular of pericardial tamponade,” he said. “We cannot therefore exclude that the higher percentage of patients under dual-antiplatelet therapy in the CCTA-blinded group might have favored this difference.”
However, he noted the investigators corrected their analysis to account for differences between the groups. “Importantly, the numerical excess in major procedural bleeding was observed within both the single-antiplatelet therapy and dual-antiplatelet therapy subgroups of the TEE-only group.”
In an accompanying editorial, coauthors Brian O’Neill, MD, and Dee Dee Wang, MD, both with the Center for Structural Heard Disease at Henry Ford Hospital in Detroit, noted that the Swiss-Apero subanalysis “reinforced” the benefit of CCTA before LAAC.
“This study demonstrated, for the first time, improved short- and long-term procedural success using CT in addition to TEE for left atrial appendage occlusion,” Dr. O’Neill said in an interview. “This particular study may serve as a guide to an adequately powered randomized trial of CT versus TEE in left atrial appendage occlusion.” Future LAAC trials should incorporate preprocedural CCTA.
Dr. O’Neill noted that, as a subanalysis of a randomized trial, the “results are hypothesis generating.” However, he added, “the results are in line with several previous studies of CT versus TEE in left atrial appendage occlusion.”
Dr Räber disclosed financial relationships with Abbott Vascular, Boston Scientific, Biotronik, Infraredx, Heartflow, Sanofi, Regeneron, Amgen, AstraZeneca, CSL Behring, Canon, Occlutech, and Vifor. Dr. O’Neill disclosed financial relationships with Edwards Lifesciences, Medtronic, and Abbott Vascular.
FROM JACC: CARDIOVASCULAR INTERVENTIONS