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Dapagliflozin meets primary endpoint in the DAPA-HF trial
The SGLT2 inhibitor dapagliflozin (Farxiga) successfully met the primary endpoint of the phase 3 DAPA-HF trial in patients with heart failure, according to a press release from AstraZeneca.
DAPA-HF is an international, multicenter, parallel group, randomized, double-blind trial in patients with heart failure and reduced ejection fraction with or without type 2 diabetes. Patients in the study received either 10 mg dapagliflozin or placebo, and the primary outcome was time to a worsening heart failure event or to cardiovascular death. Patients who received dapagliflozin had a statistically significant reduction in incidence of cardiovascular death and an increase in time to a heart failure event.
The adverse events reported for dapagliflozin in DAPA-HF matched the established safety profile for the drug, AstraZeneca noted in the press release.
“The benefits of dapagliflozin in DAPA-HF are very impressive, with a substantial reduction in the primary composite outcome of cardiovascular death or hospital admission. We hope these exciting new findings will ultimately help reduce the terrible burden of disease caused by heart failure and help improve outcomes for our patients,” said John McMurray, MD, of the Institute of Cardiovascular and Medical Sciences at the University of Glasgow.
Another dapagliflozin trial, called DELIVER, is focused on 4,700 patients with heart failure with preserved ejection fraction randomized to dapagliflozin (Farxiga) or placebo. That is due to be completed next year.
The full results from DAPA-HF will be presented at a later date.
The SGLT2 inhibitor dapagliflozin (Farxiga) successfully met the primary endpoint of the phase 3 DAPA-HF trial in patients with heart failure, according to a press release from AstraZeneca.
DAPA-HF is an international, multicenter, parallel group, randomized, double-blind trial in patients with heart failure and reduced ejection fraction with or without type 2 diabetes. Patients in the study received either 10 mg dapagliflozin or placebo, and the primary outcome was time to a worsening heart failure event or to cardiovascular death. Patients who received dapagliflozin had a statistically significant reduction in incidence of cardiovascular death and an increase in time to a heart failure event.
The adverse events reported for dapagliflozin in DAPA-HF matched the established safety profile for the drug, AstraZeneca noted in the press release.
“The benefits of dapagliflozin in DAPA-HF are very impressive, with a substantial reduction in the primary composite outcome of cardiovascular death or hospital admission. We hope these exciting new findings will ultimately help reduce the terrible burden of disease caused by heart failure and help improve outcomes for our patients,” said John McMurray, MD, of the Institute of Cardiovascular and Medical Sciences at the University of Glasgow.
Another dapagliflozin trial, called DELIVER, is focused on 4,700 patients with heart failure with preserved ejection fraction randomized to dapagliflozin (Farxiga) or placebo. That is due to be completed next year.
The full results from DAPA-HF will be presented at a later date.
The SGLT2 inhibitor dapagliflozin (Farxiga) successfully met the primary endpoint of the phase 3 DAPA-HF trial in patients with heart failure, according to a press release from AstraZeneca.
DAPA-HF is an international, multicenter, parallel group, randomized, double-blind trial in patients with heart failure and reduced ejection fraction with or without type 2 diabetes. Patients in the study received either 10 mg dapagliflozin or placebo, and the primary outcome was time to a worsening heart failure event or to cardiovascular death. Patients who received dapagliflozin had a statistically significant reduction in incidence of cardiovascular death and an increase in time to a heart failure event.
The adverse events reported for dapagliflozin in DAPA-HF matched the established safety profile for the drug, AstraZeneca noted in the press release.
“The benefits of dapagliflozin in DAPA-HF are very impressive, with a substantial reduction in the primary composite outcome of cardiovascular death or hospital admission. We hope these exciting new findings will ultimately help reduce the terrible burden of disease caused by heart failure and help improve outcomes for our patients,” said John McMurray, MD, of the Institute of Cardiovascular and Medical Sciences at the University of Glasgow.
Another dapagliflozin trial, called DELIVER, is focused on 4,700 patients with heart failure with preserved ejection fraction randomized to dapagliflozin (Farxiga) or placebo. That is due to be completed next year.
The full results from DAPA-HF will be presented at a later date.
New biomarker model outmatches conventional risk factors for predicting mortality
A new model using 14 biomarkers may be more accurate at predicting longer-term mortality than a model comprising conventional risk factors, based on the largest metabolomics study to date.
The prognostic model was more accurate at predicting 5- and 10-year mortality across all ages, reported Joris Deelen, PhD, of Leiden (the Netherlands) University Medical Center and colleagues.
“These results suggest that metabolic biomarker profiling could potentially be used to guide patient care, if further validated in relevant clinical settings,” the investigators wrote in Nature Communications.
“There is no consensus on the ultimate set of predictors of longer-term [5-10 years] mortality risk, since the predictive power of the currently used risk factors is limited, especially at higher ages,” the investigators wrote. “However, it is especially this age group and follow-up time window for which a robust tool would aid clinicians in assessing whether treatment is still sensible.”
The current study was a survival meta-analysis of 44,168 individuals from 12 cohorts aged between 18 and 109 years at baseline. First, the investigators looked for associations between 226 metabolic biomarkers and all-cause mortality in the 5,512 people who died during follow-up. This revealed associations between mortality and 136 biomarkers, which increased to 159 biomarkers after adjusting for recently reported all-cause mortality associations with albumin, very low-density lipoprotein (VLDL) particle size, citrate, and glycoprotein acetyls. Because of strong correlations between many of the biomarkers evaluated, the investigators pared the field down to 63 biomarkers, then used a forward-backward procedure to ultimately identify 14 biomarkers independently associated with mortality. Of the four recently described biomarkers, citrate was excluded from the final model because of its minimal contribution to mortality estimates.
The 14 biomarkers were total lipids in chylomicrons and extremely large VLDL cholesterol, total lipids in small HDL cholesterol, mean diameter for VLDL cholesterol particles, ratio of polyunsaturated fatty acids to total fatty acids, glucose, lactate, histidine, isoleucine, leucine, valine, phenylalanine, acetoacetate, albumin, and glycoprotein acetyls.
“The 14 identified biomarkers are involved in various processes, such as lipoprotein and fatty acid metabolism, glycolysis, fluid balance, and inflammation. Although the majority of these biomarkers have been associated with mortality before, this is the first study that shows their independent effect when combined into one model,” the researchers wrote.
Implementation of the new biomarker model led to a score that typically ranged from –2 to 3. A 1-point increase was associated with a 173% increased risk of death (hazard ratio, 2.73; P less than 1 x 10–132). Analysis of cause-specific mortality revealed that most biomarkers were predictive of multiple causes of death. Some biomarkers were more focused; glucose, for example, was more predictive of cardiovascular-related death than of death because of cancer or nonlocalized infections. Compared with a model incorporating conventional risk factors, the biomarker model more accurately predicted 5- and 10-year mortality, with respective C-statistics of 0.837 versus 0.772 and 0.830 versus 0.790. This superiority was even more pronounced when only individuals aged older than 60 years were included.
The study was funded by Biobanking and BioMolecular resources Research Initiative–Netherlands. The investigators reported additional relationships with Nightingale Health, Novo Nordisk, and Bayer.
SOURCE: Deelen J et al. Nature Comm. 2019 Aug 20. doi: 10.1038/s41467-019-11311-9.
A new model using 14 biomarkers may be more accurate at predicting longer-term mortality than a model comprising conventional risk factors, based on the largest metabolomics study to date.
The prognostic model was more accurate at predicting 5- and 10-year mortality across all ages, reported Joris Deelen, PhD, of Leiden (the Netherlands) University Medical Center and colleagues.
“These results suggest that metabolic biomarker profiling could potentially be used to guide patient care, if further validated in relevant clinical settings,” the investigators wrote in Nature Communications.
“There is no consensus on the ultimate set of predictors of longer-term [5-10 years] mortality risk, since the predictive power of the currently used risk factors is limited, especially at higher ages,” the investigators wrote. “However, it is especially this age group and follow-up time window for which a robust tool would aid clinicians in assessing whether treatment is still sensible.”
The current study was a survival meta-analysis of 44,168 individuals from 12 cohorts aged between 18 and 109 years at baseline. First, the investigators looked for associations between 226 metabolic biomarkers and all-cause mortality in the 5,512 people who died during follow-up. This revealed associations between mortality and 136 biomarkers, which increased to 159 biomarkers after adjusting for recently reported all-cause mortality associations with albumin, very low-density lipoprotein (VLDL) particle size, citrate, and glycoprotein acetyls. Because of strong correlations between many of the biomarkers evaluated, the investigators pared the field down to 63 biomarkers, then used a forward-backward procedure to ultimately identify 14 biomarkers independently associated with mortality. Of the four recently described biomarkers, citrate was excluded from the final model because of its minimal contribution to mortality estimates.
The 14 biomarkers were total lipids in chylomicrons and extremely large VLDL cholesterol, total lipids in small HDL cholesterol, mean diameter for VLDL cholesterol particles, ratio of polyunsaturated fatty acids to total fatty acids, glucose, lactate, histidine, isoleucine, leucine, valine, phenylalanine, acetoacetate, albumin, and glycoprotein acetyls.
“The 14 identified biomarkers are involved in various processes, such as lipoprotein and fatty acid metabolism, glycolysis, fluid balance, and inflammation. Although the majority of these biomarkers have been associated with mortality before, this is the first study that shows their independent effect when combined into one model,” the researchers wrote.
Implementation of the new biomarker model led to a score that typically ranged from –2 to 3. A 1-point increase was associated with a 173% increased risk of death (hazard ratio, 2.73; P less than 1 x 10–132). Analysis of cause-specific mortality revealed that most biomarkers were predictive of multiple causes of death. Some biomarkers were more focused; glucose, for example, was more predictive of cardiovascular-related death than of death because of cancer or nonlocalized infections. Compared with a model incorporating conventional risk factors, the biomarker model more accurately predicted 5- and 10-year mortality, with respective C-statistics of 0.837 versus 0.772 and 0.830 versus 0.790. This superiority was even more pronounced when only individuals aged older than 60 years were included.
The study was funded by Biobanking and BioMolecular resources Research Initiative–Netherlands. The investigators reported additional relationships with Nightingale Health, Novo Nordisk, and Bayer.
SOURCE: Deelen J et al. Nature Comm. 2019 Aug 20. doi: 10.1038/s41467-019-11311-9.
A new model using 14 biomarkers may be more accurate at predicting longer-term mortality than a model comprising conventional risk factors, based on the largest metabolomics study to date.
The prognostic model was more accurate at predicting 5- and 10-year mortality across all ages, reported Joris Deelen, PhD, of Leiden (the Netherlands) University Medical Center and colleagues.
“These results suggest that metabolic biomarker profiling could potentially be used to guide patient care, if further validated in relevant clinical settings,” the investigators wrote in Nature Communications.
“There is no consensus on the ultimate set of predictors of longer-term [5-10 years] mortality risk, since the predictive power of the currently used risk factors is limited, especially at higher ages,” the investigators wrote. “However, it is especially this age group and follow-up time window for which a robust tool would aid clinicians in assessing whether treatment is still sensible.”
The current study was a survival meta-analysis of 44,168 individuals from 12 cohorts aged between 18 and 109 years at baseline. First, the investigators looked for associations between 226 metabolic biomarkers and all-cause mortality in the 5,512 people who died during follow-up. This revealed associations between mortality and 136 biomarkers, which increased to 159 biomarkers after adjusting for recently reported all-cause mortality associations with albumin, very low-density lipoprotein (VLDL) particle size, citrate, and glycoprotein acetyls. Because of strong correlations between many of the biomarkers evaluated, the investigators pared the field down to 63 biomarkers, then used a forward-backward procedure to ultimately identify 14 biomarkers independently associated with mortality. Of the four recently described biomarkers, citrate was excluded from the final model because of its minimal contribution to mortality estimates.
The 14 biomarkers were total lipids in chylomicrons and extremely large VLDL cholesterol, total lipids in small HDL cholesterol, mean diameter for VLDL cholesterol particles, ratio of polyunsaturated fatty acids to total fatty acids, glucose, lactate, histidine, isoleucine, leucine, valine, phenylalanine, acetoacetate, albumin, and glycoprotein acetyls.
“The 14 identified biomarkers are involved in various processes, such as lipoprotein and fatty acid metabolism, glycolysis, fluid balance, and inflammation. Although the majority of these biomarkers have been associated with mortality before, this is the first study that shows their independent effect when combined into one model,” the researchers wrote.
Implementation of the new biomarker model led to a score that typically ranged from –2 to 3. A 1-point increase was associated with a 173% increased risk of death (hazard ratio, 2.73; P less than 1 x 10–132). Analysis of cause-specific mortality revealed that most biomarkers were predictive of multiple causes of death. Some biomarkers were more focused; glucose, for example, was more predictive of cardiovascular-related death than of death because of cancer or nonlocalized infections. Compared with a model incorporating conventional risk factors, the biomarker model more accurately predicted 5- and 10-year mortality, with respective C-statistics of 0.837 versus 0.772 and 0.830 versus 0.790. This superiority was even more pronounced when only individuals aged older than 60 years were included.
The study was funded by Biobanking and BioMolecular resources Research Initiative–Netherlands. The investigators reported additional relationships with Nightingale Health, Novo Nordisk, and Bayer.
SOURCE: Deelen J et al. Nature Comm. 2019 Aug 20. doi: 10.1038/s41467-019-11311-9.
FROM NATURE COMMUNICATIONS
Key clinical point: A new model using 14 biomarkers may be more accurate at predicting 5- and 10-year mortality than a model comprising conventional risk factors.
Major finding: The biomarker model better predicted 5-year mortality than the conventional model (C-statistic, 0.837 vs. 0.772).
Study details: A retrospective metabolomics study involving 44,168 individuals.
Disclosures: The study was funded by Biobanking and BioMolecular Resources Research Initiative–Netherlands. The investigators reported additional relationships with Nightingale Health, Novo Nordisk, and Bayer.
Source: Deelen J et al. Nature Comm. 2019 Aug 20. doi: 10.1038/s41467-019-11311-9.
FDA approves Xenleta for community-acquired bacterial pneumonia treatment
The Food and Drug Administration has announced its approval of lefamulin (Xenleta) for the treatment of community-acquired bacterial pneumonia in adults.
Approval was based on results of two clinical trials assessing a total of 1,289 people with community-acquired bacterial pneumonia. In these trials, lefamulin was compared with moxifloxacin with and without linezolid. Patients who received lefamulin had similar rates of treatment success as those taking moxifloxacin alone or moxifloxacin plus linezolid.
The most common adverse reactions associated with lefamulin include diarrhea, nausea, reactions at the injection site, elevated liver enzymes, and vomiting. Patients with prolonged QT interval, patients with arrhythmias, patients receiving treatment with antiarrhythmic agents, and patients receiving other drugs that prolong the QT interval are contraindicated. In addition, because of evidence of fetal harm in animal studies, pregnant women should be advised of potential risks before receiving lefamulin.
“This new drug provides another option for the treatment of patients with community-acquired bacterial pneumonia, a serious disease. For managing this serious disease, it is important for physicians and patients to have treatment options,” Ed Cox, MD, MPH, director of the FDA’s Office of Antimicrobial Products, said in the press release.
The Food and Drug Administration has announced its approval of lefamulin (Xenleta) for the treatment of community-acquired bacterial pneumonia in adults.
Approval was based on results of two clinical trials assessing a total of 1,289 people with community-acquired bacterial pneumonia. In these trials, lefamulin was compared with moxifloxacin with and without linezolid. Patients who received lefamulin had similar rates of treatment success as those taking moxifloxacin alone or moxifloxacin plus linezolid.
The most common adverse reactions associated with lefamulin include diarrhea, nausea, reactions at the injection site, elevated liver enzymes, and vomiting. Patients with prolonged QT interval, patients with arrhythmias, patients receiving treatment with antiarrhythmic agents, and patients receiving other drugs that prolong the QT interval are contraindicated. In addition, because of evidence of fetal harm in animal studies, pregnant women should be advised of potential risks before receiving lefamulin.
“This new drug provides another option for the treatment of patients with community-acquired bacterial pneumonia, a serious disease. For managing this serious disease, it is important for physicians and patients to have treatment options,” Ed Cox, MD, MPH, director of the FDA’s Office of Antimicrobial Products, said in the press release.
The Food and Drug Administration has announced its approval of lefamulin (Xenleta) for the treatment of community-acquired bacterial pneumonia in adults.
Approval was based on results of two clinical trials assessing a total of 1,289 people with community-acquired bacterial pneumonia. In these trials, lefamulin was compared with moxifloxacin with and without linezolid. Patients who received lefamulin had similar rates of treatment success as those taking moxifloxacin alone or moxifloxacin plus linezolid.
The most common adverse reactions associated with lefamulin include diarrhea, nausea, reactions at the injection site, elevated liver enzymes, and vomiting. Patients with prolonged QT interval, patients with arrhythmias, patients receiving treatment with antiarrhythmic agents, and patients receiving other drugs that prolong the QT interval are contraindicated. In addition, because of evidence of fetal harm in animal studies, pregnant women should be advised of potential risks before receiving lefamulin.
“This new drug provides another option for the treatment of patients with community-acquired bacterial pneumonia, a serious disease. For managing this serious disease, it is important for physicians and patients to have treatment options,” Ed Cox, MD, MPH, director of the FDA’s Office of Antimicrobial Products, said in the press release.
Short-term parenteral antibiotics effective for bacteremic UTI in young infants
according to a study.
While previous studies have shown short-term parenteral antibiotic therapy to be safe and equally effective in uncomplicated urinary tract infections (UTIs), short-term therapy safety in bacteremic UTI had not been established, Sanyukta Desai, MD, of the University of Cincinnati and Cincinnati Children’s Hospital and associates wrote in Pediatrics.
“As a result, infants with bacteremic UTI often receive prolonged courses of parenteral antibiotics, which can lead to long hospitalizations and increased costs,” they said.
In a multicenter, retrospective cohort study, Dr. Desai and associates analyzed a group of 115 infants aged 60 days or younger who were admitted to a group of 11 participating EDs between July 1, 2011, and June 30, 2016, if they had a UTI caused by a bacterial pathogen. Half of the infants were administered parenteral antibiotics for 7 days or less before being switched to oral antibiotics, and the rest were given parenteral antibiotics for more than 7 days before switching to oral. Infants were more likely to receive long-term parenteral treatment if they were ill appearing and had growth of a non–Escherichia coli organism.
Six infants (two in the short-term group, four in the long-term group) had a recurrent UTI, each one diagnosed between 15 and 30 days after discharge; the adjusted risk difference between the two groups was 3% (95% confidence interval, –5.8 to 12.7). Two of the infants in the long-term group with a recurrent UTI had a different organism than during the index infection. When comparing only the infants with growth of the same pathogen that caused the index UTI, the adjusted risk difference between the two groups was 0.2% (95% CI, –7.8 to 8.3).
A total of 15 infants (6 in the short-term group, 9 in the long-term group) had 30-day all-cause reutilization, with no significant difference between groups (adjusted risk difference, 3%; 95% CI, –14.6 to 20.4).
Mean length of stay was significantly longer in the long-term treatment group, compared with the short-term group (11 days vs. 5 days; adjusted mean difference, 6 days; 95% CI, 4.0-8.8).
No infants experienced a serious adverse event such as ICU readmission, need for mechanical ventilation or vasopressor use, or signs of neurologic sequelae within 30 days of discharge from the index hospitalization, the investigators noted. Peripherally inserted central catheters were required in 13 infants; of these, 1 infant had to revisit an ED because of a related mechanical complication.
“Researchers in future prospective studies should seek to establish the bioavailability and optimal dosing of oral antibiotics in young infants and assess if there are particular subpopulations of infants with bacteremic UTI who may benefit from longer courses of parenteral antibiotic therapy,” Dr. Desai and associates concluded.
In a related editorial, Natalia V. Leva, MD, and Hillary L. Copp, MD, of the University of California, San Francisco, noted that the study represents a “critical piece of a complicated puzzle that not only includes minimum duration of parenteral antibiotic treatment but also involves bioavailability of antimicrobial agents in infants and total treatment duration, which includes parenteral and oral antibiotic therapy.”
The question that remains is how long a duration of parenteral antibiotic is necessary, Dr. Leva and Dr. Copp wrote. “Desai et al. used a relatively arbitrary cutoff of 7 days on the basis of the distribution of antibiotic course among their patient population; however, this is likely more a reflection of clinical practice than it is evidence based.” They concluded that this study provided evidence that a “short course of parenteral antibiotics in infants [aged 60 days or younger] with bacteremic UTI is safe and effective. Although the current study does not address total duration of antibiotics [parenteral and oral], it does shine a light on where we should focus future research endeavors.”
The study authors reported that they had no conflicts of interest. The study was supported in part by a National Center for Advancing Translational Sciences grant and an Agency for Healthcare Research and Quality grant. The editorialists had no relevant conflicts of interest and received no external funding.
SOURCEs: Desai S et al. Pediatrics. 2019 Aug 20. doi: 10.1542/peds.2018-3844; Leva et al. 2019 Aug 20. doi: 10.1542/peds.2019-1611.
according to a study.
While previous studies have shown short-term parenteral antibiotic therapy to be safe and equally effective in uncomplicated urinary tract infections (UTIs), short-term therapy safety in bacteremic UTI had not been established, Sanyukta Desai, MD, of the University of Cincinnati and Cincinnati Children’s Hospital and associates wrote in Pediatrics.
“As a result, infants with bacteremic UTI often receive prolonged courses of parenteral antibiotics, which can lead to long hospitalizations and increased costs,” they said.
In a multicenter, retrospective cohort study, Dr. Desai and associates analyzed a group of 115 infants aged 60 days or younger who were admitted to a group of 11 participating EDs between July 1, 2011, and June 30, 2016, if they had a UTI caused by a bacterial pathogen. Half of the infants were administered parenteral antibiotics for 7 days or less before being switched to oral antibiotics, and the rest were given parenteral antibiotics for more than 7 days before switching to oral. Infants were more likely to receive long-term parenteral treatment if they were ill appearing and had growth of a non–Escherichia coli organism.
Six infants (two in the short-term group, four in the long-term group) had a recurrent UTI, each one diagnosed between 15 and 30 days after discharge; the adjusted risk difference between the two groups was 3% (95% confidence interval, –5.8 to 12.7). Two of the infants in the long-term group with a recurrent UTI had a different organism than during the index infection. When comparing only the infants with growth of the same pathogen that caused the index UTI, the adjusted risk difference between the two groups was 0.2% (95% CI, –7.8 to 8.3).
A total of 15 infants (6 in the short-term group, 9 in the long-term group) had 30-day all-cause reutilization, with no significant difference between groups (adjusted risk difference, 3%; 95% CI, –14.6 to 20.4).
Mean length of stay was significantly longer in the long-term treatment group, compared with the short-term group (11 days vs. 5 days; adjusted mean difference, 6 days; 95% CI, 4.0-8.8).
No infants experienced a serious adverse event such as ICU readmission, need for mechanical ventilation or vasopressor use, or signs of neurologic sequelae within 30 days of discharge from the index hospitalization, the investigators noted. Peripherally inserted central catheters were required in 13 infants; of these, 1 infant had to revisit an ED because of a related mechanical complication.
“Researchers in future prospective studies should seek to establish the bioavailability and optimal dosing of oral antibiotics in young infants and assess if there are particular subpopulations of infants with bacteremic UTI who may benefit from longer courses of parenteral antibiotic therapy,” Dr. Desai and associates concluded.
In a related editorial, Natalia V. Leva, MD, and Hillary L. Copp, MD, of the University of California, San Francisco, noted that the study represents a “critical piece of a complicated puzzle that not only includes minimum duration of parenteral antibiotic treatment but also involves bioavailability of antimicrobial agents in infants and total treatment duration, which includes parenteral and oral antibiotic therapy.”
The question that remains is how long a duration of parenteral antibiotic is necessary, Dr. Leva and Dr. Copp wrote. “Desai et al. used a relatively arbitrary cutoff of 7 days on the basis of the distribution of antibiotic course among their patient population; however, this is likely more a reflection of clinical practice than it is evidence based.” They concluded that this study provided evidence that a “short course of parenteral antibiotics in infants [aged 60 days or younger] with bacteremic UTI is safe and effective. Although the current study does not address total duration of antibiotics [parenteral and oral], it does shine a light on where we should focus future research endeavors.”
The study authors reported that they had no conflicts of interest. The study was supported in part by a National Center for Advancing Translational Sciences grant and an Agency for Healthcare Research and Quality grant. The editorialists had no relevant conflicts of interest and received no external funding.
SOURCEs: Desai S et al. Pediatrics. 2019 Aug 20. doi: 10.1542/peds.2018-3844; Leva et al. 2019 Aug 20. doi: 10.1542/peds.2019-1611.
according to a study.
While previous studies have shown short-term parenteral antibiotic therapy to be safe and equally effective in uncomplicated urinary tract infections (UTIs), short-term therapy safety in bacteremic UTI had not been established, Sanyukta Desai, MD, of the University of Cincinnati and Cincinnati Children’s Hospital and associates wrote in Pediatrics.
“As a result, infants with bacteremic UTI often receive prolonged courses of parenteral antibiotics, which can lead to long hospitalizations and increased costs,” they said.
In a multicenter, retrospective cohort study, Dr. Desai and associates analyzed a group of 115 infants aged 60 days or younger who were admitted to a group of 11 participating EDs between July 1, 2011, and June 30, 2016, if they had a UTI caused by a bacterial pathogen. Half of the infants were administered parenteral antibiotics for 7 days or less before being switched to oral antibiotics, and the rest were given parenteral antibiotics for more than 7 days before switching to oral. Infants were more likely to receive long-term parenteral treatment if they were ill appearing and had growth of a non–Escherichia coli organism.
Six infants (two in the short-term group, four in the long-term group) had a recurrent UTI, each one diagnosed between 15 and 30 days after discharge; the adjusted risk difference between the two groups was 3% (95% confidence interval, –5.8 to 12.7). Two of the infants in the long-term group with a recurrent UTI had a different organism than during the index infection. When comparing only the infants with growth of the same pathogen that caused the index UTI, the adjusted risk difference between the two groups was 0.2% (95% CI, –7.8 to 8.3).
A total of 15 infants (6 in the short-term group, 9 in the long-term group) had 30-day all-cause reutilization, with no significant difference between groups (adjusted risk difference, 3%; 95% CI, –14.6 to 20.4).
Mean length of stay was significantly longer in the long-term treatment group, compared with the short-term group (11 days vs. 5 days; adjusted mean difference, 6 days; 95% CI, 4.0-8.8).
No infants experienced a serious adverse event such as ICU readmission, need for mechanical ventilation or vasopressor use, or signs of neurologic sequelae within 30 days of discharge from the index hospitalization, the investigators noted. Peripherally inserted central catheters were required in 13 infants; of these, 1 infant had to revisit an ED because of a related mechanical complication.
“Researchers in future prospective studies should seek to establish the bioavailability and optimal dosing of oral antibiotics in young infants and assess if there are particular subpopulations of infants with bacteremic UTI who may benefit from longer courses of parenteral antibiotic therapy,” Dr. Desai and associates concluded.
In a related editorial, Natalia V. Leva, MD, and Hillary L. Copp, MD, of the University of California, San Francisco, noted that the study represents a “critical piece of a complicated puzzle that not only includes minimum duration of parenteral antibiotic treatment but also involves bioavailability of antimicrobial agents in infants and total treatment duration, which includes parenteral and oral antibiotic therapy.”
The question that remains is how long a duration of parenteral antibiotic is necessary, Dr. Leva and Dr. Copp wrote. “Desai et al. used a relatively arbitrary cutoff of 7 days on the basis of the distribution of antibiotic course among their patient population; however, this is likely more a reflection of clinical practice than it is evidence based.” They concluded that this study provided evidence that a “short course of parenteral antibiotics in infants [aged 60 days or younger] with bacteremic UTI is safe and effective. Although the current study does not address total duration of antibiotics [parenteral and oral], it does shine a light on where we should focus future research endeavors.”
The study authors reported that they had no conflicts of interest. The study was supported in part by a National Center for Advancing Translational Sciences grant and an Agency for Healthcare Research and Quality grant. The editorialists had no relevant conflicts of interest and received no external funding.
SOURCEs: Desai S et al. Pediatrics. 2019 Aug 20. doi: 10.1542/peds.2018-3844; Leva et al. 2019 Aug 20. doi: 10.1542/peds.2019-1611.
FROM PEDIATRICS
Key clinical point: Urinary tract infection (UTI) recurrence and hospital reutilization was similar in infants with bacteremic UTIs, regardless of parenteral antibiotic treatment duration of 7 days or less or greater than 7 days prior to oral antibiotics.
Major finding: The adjusted risk difference for both infection recurrence and hospital reutilization was 3% and was nonsignificant in both cases.
Study details: A group of 115 infants aged 60 days or younger who were admitted to an ED with a bacteremic UTI.
Disclosures: The study authors reported that they had no conflicts of interest. The funding of the study was supported in part by a National Center for Advancing Translational Sciences grant and an Agency for Healthcare Research and Quality grant.
Source: Desai S et al. Pediatrics. 2019 Aug 20. doi: 10.1542/peds.2018-3844.
Post-TAVR anticoagulation alone fails to cut stroke risk in AFib
In patients with atrial fibrillation (AFib) who have undergone transcatheter aortic valve replacement (TAVR) and had a CHA2DS2-VASc score of at least 2, oral anticoagulant (OAC) therapy alone was not linked to reduced stroke risk.
By contrast, antiplatelet therapy was linked to a reduced risk of stroke in those AFib-TAVR patients, regardless of whether an oral anticoagulant was on board, according to results of a substudy of the randomized PARTNER II (Placement of Aortic Transcatheter Valve II) trial and its associated registries.
“Anticoagulant therapy was associated with a reduced risk of stroke and the composite of death or stroke when used concomitantly with uninterrupted antiplatelet therapy following TAVR,” concluded authors of the analysis, led by Ioanna Kosmidou, MD, PhD, of Columbia University in New York.
Taken together, these findings suggest OAC alone is “not sufficient” to prevent cerebrovascular events after TAVR in patients with AFib, Dr. Kosmidou and colleagues reported in JACC: Cardiovascular Interventions.
The analysis of the PARTNER II substudy included a total of 1,621 patients with aortic stenosis treated with TAVR who had a history of AFib and an absolute indication for anticoagulation as evidenced by a CHA2DS2-VASc score of at least 2.
Despite the absolute indication for anticoagulation, more than 40% of these patients were not prescribed an OAC upon discharge, investigators wrote, though the rate of nonprescribing decreased over the 5-year enrollment period of 2011-2015.
OAC therapy alone was not linked to reduced stroke risk in this cohort, investigators said. After 2 years, the rate of stroke was 6.6% for AFib-TAVR patients on anticoagulant therapy, and 5.6% for those who were not on anticoagulant therapy, a nonsignificant difference at P = 0.53, according to the reported data.
By contrast, uninterrupted antiplatelet therapy reduced both risk of stroke and risk of the composite endpoint of stroke and death at 2 years “irrespective of concomitant anticoagulation,” Dr. Kosmidou and coinvestigators wrote in the report.
The stroke rates were 5.4% for antiplatelet therapy plus OAC, versus 11.1% for those receiving neither antithrombotic treatment (P = 0.03), while the rates of stroke or death were 29.7% and 40.1%, respectively (P = 0.01), according to investigators.
After adjustment, stroke risk was not significantly reduced for OAC when compared with no OAC or antiplatelet therapy (HR, 0.61; P = .16), whereas stroke risk was indeed reduced for antiplatelet therapy alone (HR, 0.32; P = .002) and antiplatelet therapy with oral anticoagulation (HR, 0.44; P = .018).
The PARTNER II study was funded by Edwards Lifesciences. Senior author Martin B. Leon, MD, and several other study coauthors reported disclosures related to Edwards Lifesciences, in addition to Abbott Vascular, Cordis, Medtronic, Boston Scientific, and other companies. Dr. Kosmidou reported no disclosures.
SOURCE: Kosmidou I et al. JACC Cardiovasc Interv. 2019;12:1580-9.
Results of this PARTNER II substudy investigation by Kosmidou and colleagues are timely and thought provoking because they imply that some current recommendations may be insufficient for preventing stroke in patients with atrial fibrillation (AFib) undergoing transcatheter aortic valve replacement (TAVR).
Specifically, the results showed no difference in risk of stroke or the composite of death and stroke at 2 years in oral anticoagulant (OAC) and non-OAC patient groups, whereas by contrast, antiplatelet therapy was linked with reduced stroke risk versus no antithrombotic therapy, whether or not the patients received OAC.
The substudy reinforces the understanding that TAVR itself is a determinant of stroke because of mechanisms that go beyond thrombus formation in the left atrial appendage and are essentially platelet mediated.
How to manage antithrombotic therapy in patients with AFib who undergo TAVR remains a residual field of ambiguity.
However, observational studies cannot be conclusive, they said, so results of relevant prospective, randomized trials are eagerly awaited.
For example, the effects of novel oral anticoagulants versus vitamin K antagonists will be evaluated in the ENVISAGE-TAVI study, as well as the ATLANTIS trial, which will additionally include non-OAC patients.
The relative benefits of OAC alone versus OAC plus antiplatelet therapy will be evaluated in the AVATAR study, which will include AFib-TAVR patients randomized to OAC versus OAC plus aspirin, while the POPular-TAVI and CLOE trials will also include cohorts that help provide a more eloquent answer regarding the benefit-risk ratio of combining antiplatelet therapy and OAC in these patients.
Davide Capodanno, MD, PhD, and Antonio Greco, MD, of the University of Catania (Italy) made these comments in an accompanying editorial (JACC: Cardiovasc Interv. 2019 Aug 19. doi: 10.1016/j.jcin.2019.07.004). Dr. Capodanno reported disclosures related to Abbott Vascular, Amgen, AstraZeneca, Bayer, Boehringer Ingelheim, Daiichi-Sankyo, and Sanofi. Dr. Greco reported having no relevant disclosures.
Results of this PARTNER II substudy investigation by Kosmidou and colleagues are timely and thought provoking because they imply that some current recommendations may be insufficient for preventing stroke in patients with atrial fibrillation (AFib) undergoing transcatheter aortic valve replacement (TAVR).
Specifically, the results showed no difference in risk of stroke or the composite of death and stroke at 2 years in oral anticoagulant (OAC) and non-OAC patient groups, whereas by contrast, antiplatelet therapy was linked with reduced stroke risk versus no antithrombotic therapy, whether or not the patients received OAC.
The substudy reinforces the understanding that TAVR itself is a determinant of stroke because of mechanisms that go beyond thrombus formation in the left atrial appendage and are essentially platelet mediated.
How to manage antithrombotic therapy in patients with AFib who undergo TAVR remains a residual field of ambiguity.
However, observational studies cannot be conclusive, they said, so results of relevant prospective, randomized trials are eagerly awaited.
For example, the effects of novel oral anticoagulants versus vitamin K antagonists will be evaluated in the ENVISAGE-TAVI study, as well as the ATLANTIS trial, which will additionally include non-OAC patients.
The relative benefits of OAC alone versus OAC plus antiplatelet therapy will be evaluated in the AVATAR study, which will include AFib-TAVR patients randomized to OAC versus OAC plus aspirin, while the POPular-TAVI and CLOE trials will also include cohorts that help provide a more eloquent answer regarding the benefit-risk ratio of combining antiplatelet therapy and OAC in these patients.
Davide Capodanno, MD, PhD, and Antonio Greco, MD, of the University of Catania (Italy) made these comments in an accompanying editorial (JACC: Cardiovasc Interv. 2019 Aug 19. doi: 10.1016/j.jcin.2019.07.004). Dr. Capodanno reported disclosures related to Abbott Vascular, Amgen, AstraZeneca, Bayer, Boehringer Ingelheim, Daiichi-Sankyo, and Sanofi. Dr. Greco reported having no relevant disclosures.
Results of this PARTNER II substudy investigation by Kosmidou and colleagues are timely and thought provoking because they imply that some current recommendations may be insufficient for preventing stroke in patients with atrial fibrillation (AFib) undergoing transcatheter aortic valve replacement (TAVR).
Specifically, the results showed no difference in risk of stroke or the composite of death and stroke at 2 years in oral anticoagulant (OAC) and non-OAC patient groups, whereas by contrast, antiplatelet therapy was linked with reduced stroke risk versus no antithrombotic therapy, whether or not the patients received OAC.
The substudy reinforces the understanding that TAVR itself is a determinant of stroke because of mechanisms that go beyond thrombus formation in the left atrial appendage and are essentially platelet mediated.
How to manage antithrombotic therapy in patients with AFib who undergo TAVR remains a residual field of ambiguity.
However, observational studies cannot be conclusive, they said, so results of relevant prospective, randomized trials are eagerly awaited.
For example, the effects of novel oral anticoagulants versus vitamin K antagonists will be evaluated in the ENVISAGE-TAVI study, as well as the ATLANTIS trial, which will additionally include non-OAC patients.
The relative benefits of OAC alone versus OAC plus antiplatelet therapy will be evaluated in the AVATAR study, which will include AFib-TAVR patients randomized to OAC versus OAC plus aspirin, while the POPular-TAVI and CLOE trials will also include cohorts that help provide a more eloquent answer regarding the benefit-risk ratio of combining antiplatelet therapy and OAC in these patients.
Davide Capodanno, MD, PhD, and Antonio Greco, MD, of the University of Catania (Italy) made these comments in an accompanying editorial (JACC: Cardiovasc Interv. 2019 Aug 19. doi: 10.1016/j.jcin.2019.07.004). Dr. Capodanno reported disclosures related to Abbott Vascular, Amgen, AstraZeneca, Bayer, Boehringer Ingelheim, Daiichi-Sankyo, and Sanofi. Dr. Greco reported having no relevant disclosures.
In patients with atrial fibrillation (AFib) who have undergone transcatheter aortic valve replacement (TAVR) and had a CHA2DS2-VASc score of at least 2, oral anticoagulant (OAC) therapy alone was not linked to reduced stroke risk.
By contrast, antiplatelet therapy was linked to a reduced risk of stroke in those AFib-TAVR patients, regardless of whether an oral anticoagulant was on board, according to results of a substudy of the randomized PARTNER II (Placement of Aortic Transcatheter Valve II) trial and its associated registries.
“Anticoagulant therapy was associated with a reduced risk of stroke and the composite of death or stroke when used concomitantly with uninterrupted antiplatelet therapy following TAVR,” concluded authors of the analysis, led by Ioanna Kosmidou, MD, PhD, of Columbia University in New York.
Taken together, these findings suggest OAC alone is “not sufficient” to prevent cerebrovascular events after TAVR in patients with AFib, Dr. Kosmidou and colleagues reported in JACC: Cardiovascular Interventions.
The analysis of the PARTNER II substudy included a total of 1,621 patients with aortic stenosis treated with TAVR who had a history of AFib and an absolute indication for anticoagulation as evidenced by a CHA2DS2-VASc score of at least 2.
Despite the absolute indication for anticoagulation, more than 40% of these patients were not prescribed an OAC upon discharge, investigators wrote, though the rate of nonprescribing decreased over the 5-year enrollment period of 2011-2015.
OAC therapy alone was not linked to reduced stroke risk in this cohort, investigators said. After 2 years, the rate of stroke was 6.6% for AFib-TAVR patients on anticoagulant therapy, and 5.6% for those who were not on anticoagulant therapy, a nonsignificant difference at P = 0.53, according to the reported data.
By contrast, uninterrupted antiplatelet therapy reduced both risk of stroke and risk of the composite endpoint of stroke and death at 2 years “irrespective of concomitant anticoagulation,” Dr. Kosmidou and coinvestigators wrote in the report.
The stroke rates were 5.4% for antiplatelet therapy plus OAC, versus 11.1% for those receiving neither antithrombotic treatment (P = 0.03), while the rates of stroke or death were 29.7% and 40.1%, respectively (P = 0.01), according to investigators.
After adjustment, stroke risk was not significantly reduced for OAC when compared with no OAC or antiplatelet therapy (HR, 0.61; P = .16), whereas stroke risk was indeed reduced for antiplatelet therapy alone (HR, 0.32; P = .002) and antiplatelet therapy with oral anticoagulation (HR, 0.44; P = .018).
The PARTNER II study was funded by Edwards Lifesciences. Senior author Martin B. Leon, MD, and several other study coauthors reported disclosures related to Edwards Lifesciences, in addition to Abbott Vascular, Cordis, Medtronic, Boston Scientific, and other companies. Dr. Kosmidou reported no disclosures.
SOURCE: Kosmidou I et al. JACC Cardiovasc Interv. 2019;12:1580-9.
In patients with atrial fibrillation (AFib) who have undergone transcatheter aortic valve replacement (TAVR) and had a CHA2DS2-VASc score of at least 2, oral anticoagulant (OAC) therapy alone was not linked to reduced stroke risk.
By contrast, antiplatelet therapy was linked to a reduced risk of stroke in those AFib-TAVR patients, regardless of whether an oral anticoagulant was on board, according to results of a substudy of the randomized PARTNER II (Placement of Aortic Transcatheter Valve II) trial and its associated registries.
“Anticoagulant therapy was associated with a reduced risk of stroke and the composite of death or stroke when used concomitantly with uninterrupted antiplatelet therapy following TAVR,” concluded authors of the analysis, led by Ioanna Kosmidou, MD, PhD, of Columbia University in New York.
Taken together, these findings suggest OAC alone is “not sufficient” to prevent cerebrovascular events after TAVR in patients with AFib, Dr. Kosmidou and colleagues reported in JACC: Cardiovascular Interventions.
The analysis of the PARTNER II substudy included a total of 1,621 patients with aortic stenosis treated with TAVR who had a history of AFib and an absolute indication for anticoagulation as evidenced by a CHA2DS2-VASc score of at least 2.
Despite the absolute indication for anticoagulation, more than 40% of these patients were not prescribed an OAC upon discharge, investigators wrote, though the rate of nonprescribing decreased over the 5-year enrollment period of 2011-2015.
OAC therapy alone was not linked to reduced stroke risk in this cohort, investigators said. After 2 years, the rate of stroke was 6.6% for AFib-TAVR patients on anticoagulant therapy, and 5.6% for those who were not on anticoagulant therapy, a nonsignificant difference at P = 0.53, according to the reported data.
By contrast, uninterrupted antiplatelet therapy reduced both risk of stroke and risk of the composite endpoint of stroke and death at 2 years “irrespective of concomitant anticoagulation,” Dr. Kosmidou and coinvestigators wrote in the report.
The stroke rates were 5.4% for antiplatelet therapy plus OAC, versus 11.1% for those receiving neither antithrombotic treatment (P = 0.03), while the rates of stroke or death were 29.7% and 40.1%, respectively (P = 0.01), according to investigators.
After adjustment, stroke risk was not significantly reduced for OAC when compared with no OAC or antiplatelet therapy (HR, 0.61; P = .16), whereas stroke risk was indeed reduced for antiplatelet therapy alone (HR, 0.32; P = .002) and antiplatelet therapy with oral anticoagulation (HR, 0.44; P = .018).
The PARTNER II study was funded by Edwards Lifesciences. Senior author Martin B. Leon, MD, and several other study coauthors reported disclosures related to Edwards Lifesciences, in addition to Abbott Vascular, Cordis, Medtronic, Boston Scientific, and other companies. Dr. Kosmidou reported no disclosures.
SOURCE: Kosmidou I et al. JACC Cardiovasc Interv. 2019;12:1580-9.
FROM JACC: CARDIOVASCULAR INTERVENTIONS
Differential monocytic HLA-DR expression prognostically useful in PICU
LJUBLJANA, SLOVENIA – During their first 4 days in the pediatric ICU, critically ill children have significantly reduced human leukocyte antigen (HLA)–DR expression within all three major subsets of monocytes. The reductions are seen regardless of whether the children were admitted for sepsis, trauma, or after surgery, Navin Boeddha, MD, PhD, reported in his PIDJ Award Lecture at the annual meeting of the European Society for Paediatric Infectious Diseases.
The PIDJ Award is given annually by the editors of the Pediatric Infectious Disease Journal in recognition of what they deem the most important study published in the journal during the prior year. This one stood out because it identified promising potential laboratory markers that have been sought as a prerequisite to developing immunostimulatory therapies aimed at improving outcomes in severely immunosuppressed children.
Researchers are particularly eager to explore this investigative treatment strategy because the mortality and long-term morbidity of pediatric sepsis, in particular, remain unacceptably high. The hope now is that HLA-DR expression on monocyte subsets will be helpful in directing granulocyte-macrophage colony-stimulating factor, interferon-gamma, and other immunostimulatory therapies to the pediatric ICU patients with the most favorable benefit/risk ratio, according to Dr. Boeddha of Sophia Children’s Hospital and Erasmus University, Rotterdam, the Netherlands.
He reported on 37 critically ill children admitted to a pediatric ICU – 12 for sepsis, 11 post surgery, 10 for trauma, and 4 for other reasons – as well as 37 healthy controls. HLA-DR expression on monocyte subsets was measured by flow cytometry upon admission and again on each of the following 3 days.
The impetus for this study is that severe infection, major surgery, and severe trauma are often associated with immunosuppression. And while prior work in septic adults has concluded that decreased monocytic HLA-DR expression is a marker for immunosuppression – and that the lower the level of such expression, the greater the risk of nosocomial infection and death – this phenomenon hasn’t been well studied in critically ill children, he explained.
Dr. Boeddha and coinvestigators found that monocytic HLA-DR expression, which plays a major role in presenting antigens to T cells, decreased over time during the critically ill children’s first 4 days in the pediatric ICU. Moreover, it was lower than in controls at all four time points. This was true both for the percentage of HLA-DR–expressing monocytes of all subsets, as well as for HLA-DR mean fluorescence intensity.
In the critically ill study population as a whole, the percentage of classical monocytes – that is, CD14++ CD16– monocytes – was significantly greater at admission than in healthy controls by margins of 95% and 87%, while the percentage of nonclassical CD14+/-CD16++ monocytes was markedly lower at 2% than the 9% figure in controls.
The biggest discrepancy in monocyte subset distribution was seen in patients admitted for sepsis. Their percentage of classical monocytes was lower than in controls by a margin of 82% versus 87%; however, their proportion of intermediate monocytes (CD14++ CD16+) upon admission was twice that of controls, and it climbed further to 14% on day 2.
Among the key findings in the Rotterdam study: 13 of 37 critically ill patients experienced at least one nosocomial infection while in the pediatric ICU. Their day 2 percentage of HLA-DR–expressing classical monocytes was 42%, strikingly lower than the 78% figure in patients who didn’t develop an infection. Also, the 6 patients who died had only a 33% rate of HLA-DR–expressing classical monocytes on day 3 after pediatric ICU admission versus a 63% rate in survivors of their critical illness.
Thus, low HLA-DR expression on classical monocytes early during the course of a pediatric ICU stay may be the sought-after biomarker that identifies a particularly high-risk subgroup of critically ill children in whom immunostimulatory therapies should be studied. However, future confirmatory studies should monitor monocytic HLA-DR expression in a larger critically ill patient population for a longer period in order to establish the time to recovery of low expression and its impact on long-term complications, the physician said.
Dr. Boeddha reported having no financial conflicts regarding the award-winning study, supported by the European Union and Erasmus University.
SOURCE: Boeddha NP et al. Pediatr Infect Dis J. 2018 Oct;37(10):1034-40.
LJUBLJANA, SLOVENIA – During their first 4 days in the pediatric ICU, critically ill children have significantly reduced human leukocyte antigen (HLA)–DR expression within all three major subsets of monocytes. The reductions are seen regardless of whether the children were admitted for sepsis, trauma, or after surgery, Navin Boeddha, MD, PhD, reported in his PIDJ Award Lecture at the annual meeting of the European Society for Paediatric Infectious Diseases.
The PIDJ Award is given annually by the editors of the Pediatric Infectious Disease Journal in recognition of what they deem the most important study published in the journal during the prior year. This one stood out because it identified promising potential laboratory markers that have been sought as a prerequisite to developing immunostimulatory therapies aimed at improving outcomes in severely immunosuppressed children.
Researchers are particularly eager to explore this investigative treatment strategy because the mortality and long-term morbidity of pediatric sepsis, in particular, remain unacceptably high. The hope now is that HLA-DR expression on monocyte subsets will be helpful in directing granulocyte-macrophage colony-stimulating factor, interferon-gamma, and other immunostimulatory therapies to the pediatric ICU patients with the most favorable benefit/risk ratio, according to Dr. Boeddha of Sophia Children’s Hospital and Erasmus University, Rotterdam, the Netherlands.
He reported on 37 critically ill children admitted to a pediatric ICU – 12 for sepsis, 11 post surgery, 10 for trauma, and 4 for other reasons – as well as 37 healthy controls. HLA-DR expression on monocyte subsets was measured by flow cytometry upon admission and again on each of the following 3 days.
The impetus for this study is that severe infection, major surgery, and severe trauma are often associated with immunosuppression. And while prior work in septic adults has concluded that decreased monocytic HLA-DR expression is a marker for immunosuppression – and that the lower the level of such expression, the greater the risk of nosocomial infection and death – this phenomenon hasn’t been well studied in critically ill children, he explained.
Dr. Boeddha and coinvestigators found that monocytic HLA-DR expression, which plays a major role in presenting antigens to T cells, decreased over time during the critically ill children’s first 4 days in the pediatric ICU. Moreover, it was lower than in controls at all four time points. This was true both for the percentage of HLA-DR–expressing monocytes of all subsets, as well as for HLA-DR mean fluorescence intensity.
In the critically ill study population as a whole, the percentage of classical monocytes – that is, CD14++ CD16– monocytes – was significantly greater at admission than in healthy controls by margins of 95% and 87%, while the percentage of nonclassical CD14+/-CD16++ monocytes was markedly lower at 2% than the 9% figure in controls.
The biggest discrepancy in monocyte subset distribution was seen in patients admitted for sepsis. Their percentage of classical monocytes was lower than in controls by a margin of 82% versus 87%; however, their proportion of intermediate monocytes (CD14++ CD16+) upon admission was twice that of controls, and it climbed further to 14% on day 2.
Among the key findings in the Rotterdam study: 13 of 37 critically ill patients experienced at least one nosocomial infection while in the pediatric ICU. Their day 2 percentage of HLA-DR–expressing classical monocytes was 42%, strikingly lower than the 78% figure in patients who didn’t develop an infection. Also, the 6 patients who died had only a 33% rate of HLA-DR–expressing classical monocytes on day 3 after pediatric ICU admission versus a 63% rate in survivors of their critical illness.
Thus, low HLA-DR expression on classical monocytes early during the course of a pediatric ICU stay may be the sought-after biomarker that identifies a particularly high-risk subgroup of critically ill children in whom immunostimulatory therapies should be studied. However, future confirmatory studies should monitor monocytic HLA-DR expression in a larger critically ill patient population for a longer period in order to establish the time to recovery of low expression and its impact on long-term complications, the physician said.
Dr. Boeddha reported having no financial conflicts regarding the award-winning study, supported by the European Union and Erasmus University.
SOURCE: Boeddha NP et al. Pediatr Infect Dis J. 2018 Oct;37(10):1034-40.
LJUBLJANA, SLOVENIA – During their first 4 days in the pediatric ICU, critically ill children have significantly reduced human leukocyte antigen (HLA)–DR expression within all three major subsets of monocytes. The reductions are seen regardless of whether the children were admitted for sepsis, trauma, or after surgery, Navin Boeddha, MD, PhD, reported in his PIDJ Award Lecture at the annual meeting of the European Society for Paediatric Infectious Diseases.
The PIDJ Award is given annually by the editors of the Pediatric Infectious Disease Journal in recognition of what they deem the most important study published in the journal during the prior year. This one stood out because it identified promising potential laboratory markers that have been sought as a prerequisite to developing immunostimulatory therapies aimed at improving outcomes in severely immunosuppressed children.
Researchers are particularly eager to explore this investigative treatment strategy because the mortality and long-term morbidity of pediatric sepsis, in particular, remain unacceptably high. The hope now is that HLA-DR expression on monocyte subsets will be helpful in directing granulocyte-macrophage colony-stimulating factor, interferon-gamma, and other immunostimulatory therapies to the pediatric ICU patients with the most favorable benefit/risk ratio, according to Dr. Boeddha of Sophia Children’s Hospital and Erasmus University, Rotterdam, the Netherlands.
He reported on 37 critically ill children admitted to a pediatric ICU – 12 for sepsis, 11 post surgery, 10 for trauma, and 4 for other reasons – as well as 37 healthy controls. HLA-DR expression on monocyte subsets was measured by flow cytometry upon admission and again on each of the following 3 days.
The impetus for this study is that severe infection, major surgery, and severe trauma are often associated with immunosuppression. And while prior work in septic adults has concluded that decreased monocytic HLA-DR expression is a marker for immunosuppression – and that the lower the level of such expression, the greater the risk of nosocomial infection and death – this phenomenon hasn’t been well studied in critically ill children, he explained.
Dr. Boeddha and coinvestigators found that monocytic HLA-DR expression, which plays a major role in presenting antigens to T cells, decreased over time during the critically ill children’s first 4 days in the pediatric ICU. Moreover, it was lower than in controls at all four time points. This was true both for the percentage of HLA-DR–expressing monocytes of all subsets, as well as for HLA-DR mean fluorescence intensity.
In the critically ill study population as a whole, the percentage of classical monocytes – that is, CD14++ CD16– monocytes – was significantly greater at admission than in healthy controls by margins of 95% and 87%, while the percentage of nonclassical CD14+/-CD16++ monocytes was markedly lower at 2% than the 9% figure in controls.
The biggest discrepancy in monocyte subset distribution was seen in patients admitted for sepsis. Their percentage of classical monocytes was lower than in controls by a margin of 82% versus 87%; however, their proportion of intermediate monocytes (CD14++ CD16+) upon admission was twice that of controls, and it climbed further to 14% on day 2.
Among the key findings in the Rotterdam study: 13 of 37 critically ill patients experienced at least one nosocomial infection while in the pediatric ICU. Their day 2 percentage of HLA-DR–expressing classical monocytes was 42%, strikingly lower than the 78% figure in patients who didn’t develop an infection. Also, the 6 patients who died had only a 33% rate of HLA-DR–expressing classical monocytes on day 3 after pediatric ICU admission versus a 63% rate in survivors of their critical illness.
Thus, low HLA-DR expression on classical monocytes early during the course of a pediatric ICU stay may be the sought-after biomarker that identifies a particularly high-risk subgroup of critically ill children in whom immunostimulatory therapies should be studied. However, future confirmatory studies should monitor monocytic HLA-DR expression in a larger critically ill patient population for a longer period in order to establish the time to recovery of low expression and its impact on long-term complications, the physician said.
Dr. Boeddha reported having no financial conflicts regarding the award-winning study, supported by the European Union and Erasmus University.
SOURCE: Boeddha NP et al. Pediatr Infect Dis J. 2018 Oct;37(10):1034-40.
REPORTING FROM ESPID 2019
Presepsin can rule out invasive bacterial infection in infants
LJUBLJANA, SLOVENIA – A point-of-care presepsin measurement in the emergency department displayed powerful accuracy for early rule-out of invasive bacterial infection in infants less than 3 months old presenting with fever without a source, based on results of a phase 3 multicenter Italian study.
“P-SEP [presepsin] is a promising new biomarker. P-SEP accuracy for invasive bacterial infection is comparable to procalcitonin, even though P-SEP, like procalcitonin, is probably not accurate enough to be used as a stand-alone marker to rule-in an invasive bacterial infection,” Luca Pierantoni, MD, said in presenting the preliminary study results at the annual meeting of the European Society for Paediatric Infectious Diseases.
The presepsin test is a rapid point-of-care test well-suited for the ED setting, with a cost equal to that of point-of-care procalcitonin.
Presepsin is a form of soluble CD14 that is released from the surface of macrophages, monocytes, and neutrophils when these immune cells are stimulated by pathogens. “We think it may be a reliable diagnostic and prognostic marker of sepsis in adults and neonates,” explained Dr. Pierantoni of the University of Bologna, Italy.
Indeed, studies in adults suggest presepsin has better sensitivity and specificity than other biomarkers for early diagnosis of sepsis, and that it provides useful information on severity and prognosis as well. But, Dr. Pierantoni and his coworkers wondered, how does it perform in febrile young infants?
The Italian study was designed to address an unmet need: Fever accounts for about one-third of ED visits in infants up to age 3 months, 20% of whom are initially categorized as having fever without source. Yet ultimately 10%-20% of those youngsters having fever without source are found to have an invasive bacterial infection – that is, sepsis or meningitis – or a severe bacterial infection such as pneumonia, a urinary tract infection, or an infected umbilical cord. The sooner these infants can be identified and appropriately treated, the better.
The study enrolled 284 children less than 3 months old who had fever without cause of a mean 10.5 hours duration and presented to the emergency departments of six Italian medical centers. Children were eligible for the study regardless of whether they appeared toxic or well. Presepsin, procalcitonin, and C-reactive protein levels were immediately measured in all participants. Ultimately, 5.6% of subjects were diagnosed with an invasive bacterial infection, and another 21.2% had a severe bacterial infection.
Using a cutoff value of 449 pg/mL, P-SEP had good diagnostic accuracy for invasive bacterial infection, with an area under the receiver operating characteristics curve of 0.81, essentially the same as the 0.82 value for procalcitonin. P-SEP had a sensitivity and specificity of 87% and 75%, respectively, placing it in the same ballpark as the 82% and 86% values for procalcitonin. The strong point for P-SEP was its 99% negative predictive value, as compared to 91% for procalcitonin. The positive predictive values were 17% for P-SEP and 20% for procalcitonin.
In response to an audience question, Dr. Pierantoni speculated that the best use for P-SEP in the setting of fever of unknown origin may be in combination with procalcitonin rather than as a replacement for it. The research team is now in the process of analyzing their study data to see if that is indeed the case.
He reported having no financial conflicts regarding his study, conducted free of commercial support.
LJUBLJANA, SLOVENIA – A point-of-care presepsin measurement in the emergency department displayed powerful accuracy for early rule-out of invasive bacterial infection in infants less than 3 months old presenting with fever without a source, based on results of a phase 3 multicenter Italian study.
“P-SEP [presepsin] is a promising new biomarker. P-SEP accuracy for invasive bacterial infection is comparable to procalcitonin, even though P-SEP, like procalcitonin, is probably not accurate enough to be used as a stand-alone marker to rule-in an invasive bacterial infection,” Luca Pierantoni, MD, said in presenting the preliminary study results at the annual meeting of the European Society for Paediatric Infectious Diseases.
The presepsin test is a rapid point-of-care test well-suited for the ED setting, with a cost equal to that of point-of-care procalcitonin.
Presepsin is a form of soluble CD14 that is released from the surface of macrophages, monocytes, and neutrophils when these immune cells are stimulated by pathogens. “We think it may be a reliable diagnostic and prognostic marker of sepsis in adults and neonates,” explained Dr. Pierantoni of the University of Bologna, Italy.
Indeed, studies in adults suggest presepsin has better sensitivity and specificity than other biomarkers for early diagnosis of sepsis, and that it provides useful information on severity and prognosis as well. But, Dr. Pierantoni and his coworkers wondered, how does it perform in febrile young infants?
The Italian study was designed to address an unmet need: Fever accounts for about one-third of ED visits in infants up to age 3 months, 20% of whom are initially categorized as having fever without source. Yet ultimately 10%-20% of those youngsters having fever without source are found to have an invasive bacterial infection – that is, sepsis or meningitis – or a severe bacterial infection such as pneumonia, a urinary tract infection, or an infected umbilical cord. The sooner these infants can be identified and appropriately treated, the better.
The study enrolled 284 children less than 3 months old who had fever without cause of a mean 10.5 hours duration and presented to the emergency departments of six Italian medical centers. Children were eligible for the study regardless of whether they appeared toxic or well. Presepsin, procalcitonin, and C-reactive protein levels were immediately measured in all participants. Ultimately, 5.6% of subjects were diagnosed with an invasive bacterial infection, and another 21.2% had a severe bacterial infection.
Using a cutoff value of 449 pg/mL, P-SEP had good diagnostic accuracy for invasive bacterial infection, with an area under the receiver operating characteristics curve of 0.81, essentially the same as the 0.82 value for procalcitonin. P-SEP had a sensitivity and specificity of 87% and 75%, respectively, placing it in the same ballpark as the 82% and 86% values for procalcitonin. The strong point for P-SEP was its 99% negative predictive value, as compared to 91% for procalcitonin. The positive predictive values were 17% for P-SEP and 20% for procalcitonin.
In response to an audience question, Dr. Pierantoni speculated that the best use for P-SEP in the setting of fever of unknown origin may be in combination with procalcitonin rather than as a replacement for it. The research team is now in the process of analyzing their study data to see if that is indeed the case.
He reported having no financial conflicts regarding his study, conducted free of commercial support.
LJUBLJANA, SLOVENIA – A point-of-care presepsin measurement in the emergency department displayed powerful accuracy for early rule-out of invasive bacterial infection in infants less than 3 months old presenting with fever without a source, based on results of a phase 3 multicenter Italian study.
“P-SEP [presepsin] is a promising new biomarker. P-SEP accuracy for invasive bacterial infection is comparable to procalcitonin, even though P-SEP, like procalcitonin, is probably not accurate enough to be used as a stand-alone marker to rule-in an invasive bacterial infection,” Luca Pierantoni, MD, said in presenting the preliminary study results at the annual meeting of the European Society for Paediatric Infectious Diseases.
The presepsin test is a rapid point-of-care test well-suited for the ED setting, with a cost equal to that of point-of-care procalcitonin.
Presepsin is a form of soluble CD14 that is released from the surface of macrophages, monocytes, and neutrophils when these immune cells are stimulated by pathogens. “We think it may be a reliable diagnostic and prognostic marker of sepsis in adults and neonates,” explained Dr. Pierantoni of the University of Bologna, Italy.
Indeed, studies in adults suggest presepsin has better sensitivity and specificity than other biomarkers for early diagnosis of sepsis, and that it provides useful information on severity and prognosis as well. But, Dr. Pierantoni and his coworkers wondered, how does it perform in febrile young infants?
The Italian study was designed to address an unmet need: Fever accounts for about one-third of ED visits in infants up to age 3 months, 20% of whom are initially categorized as having fever without source. Yet ultimately 10%-20% of those youngsters having fever without source are found to have an invasive bacterial infection – that is, sepsis or meningitis – or a severe bacterial infection such as pneumonia, a urinary tract infection, or an infected umbilical cord. The sooner these infants can be identified and appropriately treated, the better.
The study enrolled 284 children less than 3 months old who had fever without cause of a mean 10.5 hours duration and presented to the emergency departments of six Italian medical centers. Children were eligible for the study regardless of whether they appeared toxic or well. Presepsin, procalcitonin, and C-reactive protein levels were immediately measured in all participants. Ultimately, 5.6% of subjects were diagnosed with an invasive bacterial infection, and another 21.2% had a severe bacterial infection.
Using a cutoff value of 449 pg/mL, P-SEP had good diagnostic accuracy for invasive bacterial infection, with an area under the receiver operating characteristics curve of 0.81, essentially the same as the 0.82 value for procalcitonin. P-SEP had a sensitivity and specificity of 87% and 75%, respectively, placing it in the same ballpark as the 82% and 86% values for procalcitonin. The strong point for P-SEP was its 99% negative predictive value, as compared to 91% for procalcitonin. The positive predictive values were 17% for P-SEP and 20% for procalcitonin.
In response to an audience question, Dr. Pierantoni speculated that the best use for P-SEP in the setting of fever of unknown origin may be in combination with procalcitonin rather than as a replacement for it. The research team is now in the process of analyzing their study data to see if that is indeed the case.
He reported having no financial conflicts regarding his study, conducted free of commercial support.
REPORTING FROM ESPID 2019
Key clinical point: A rapid point-of-care measurement of presepsin in the ED can rule out invasive bacterial infection with 99% accuracy in young infants with fever of unknown source.
Major finding: The negative predictive value of a presepsin level below the cutoff value of 449 pg/mL was 99%.
Study details: This was a multicenter Italian observational study of 284 infants less than 3 months old who presented to emergency departments with fever without source.
Disclosures: The presenter reported having no financial conflicts regarding his study, conducted free of commercial support.
‘Substantial burden’ of enterovirus meningitis in young infants
LJUBLJANA, SLOVENIA – A prospective international surveillance study has provided new insights into the surprisingly substantial clinical burden of viral meningitis caused by enteroviruses and human parechoviruses in young infants, Seilesh Kadambari, MBBS, PhD, said in his ESPID Young Investigator Award Lecture at the annual meeting of the European Society for Paediatric Infectious Diseases.
This comprehensive study captured all cases of laboratory-confirmed enterovirus (EV) and human parechovirus (HPeV) meningitis in infants less than 90 days old seen by pediatricians in the United Kingdom and Ireland during a 13-month period starting in July 2014, a time free of outbreaks. Dr. Kadambari, a pediatrician at the University of Oxford (England), was first author of the study. It was for this project, as well as his earlier studies shedding light on congenital viral infections, that he received the Young Investigator honor.
Among the key findings of the U.K./Ireland surveillance study: The incidence of EV/HPeV meningitis was more than twice that of bacterial meningitis in the same age group and more than fivefold higher than that of group B streptococcal meningitis, the No. 1 cause of bacterial meningitis in early infancy. Moreover, more than one-half of infants with EV/HPeV meningitis had low levels of inflammatory markers and no cerebrospinal fluid pleocytosis, which underscores the importance of routinely testing the cerebrospinal fluid for viral causes of meningitis in such patients using modern molecular tools such as multiplex polymerase chain reaction, according to Dr. Kadambari.
“Also, not a single one of the patients with EV/HPeV meningitis had a secondary bacterial infection – and that has important implications for management of our antibiotic stewardship programs,” he observed.
The study (Arch Dis Child. 2019 Jun;104(6):552-7) identified 668 cases of EV meningitis and 35 of HPeV meningitis, for an incidence of 0.79 and 0.04 per 1,000 live births, respectively. The most common clinical presentations were those generally seen in meningitis: fever, irritability, and reduced feeding. Circulatory shock was present in 43% of the infants with HPeV and 27% of the infants with EV infections.
Of infants with EV meningitis, 11% required admission to an intensive care unit, as did 23% of those with HPeV meningitis. Two babies with EV meningitis died and four others had continued neurologic complications at 12 months of follow-up. In contrast, all infants with HPeV survived without long-term sequelae.
Reassuringly, none of the 189 infants who underwent formal hearing testing had sensorineural hearing loss.
The surveillance study data have played an influential role in evidence-based guidelines for EV diagnosis and characterization published by the European Society of Clinical Virology (J Clin Virol. 2018 Apr;101:11-7).
An earlier study led by Dr. Kadambari documented a hefty sevenfold increase in the rate of laboratory-confirmed viral meningo-encephalitis in England and Wales during 2004-2013 across all age groups (J Infect. 2014 Oct;69[4]:326-32).
He attributed this increase to improved diagnosis of viral forms of meningitis through greater use of polymerase chain reaction. The study, based upon National Health Service hospital records, showed that more than 90% of all cases of viral meningo-encephalitis in infants less than 90 days old were caused by EV, a finding that prompted the subsequent prospective U.K./Ireland surveillance study.
Dr. Kadambari closed by noting the past decade had seen a greatly improved ability to diagnose congenital viral infections, but those improvements are not good enough.
“In the decade ahead, we hope to improve the management of this poorly understood group of infections,” the pediatrician promised.
Planned efforts include a cost-effectiveness analysis of a cytomegalovirus vaccine, an ESPID-funded research project aimed at identifying which EV/HPeV strains are most responsible for outbreaks and isolated severe disease, and gaining insight into the host-immunity factors associated with a proclivity to develop EV/HPeV meningitis in early infancy.
Dr. Kadambari reported having no financial conflicts regarding his studies, which was funded largely by Public Health England and university grants.
SOURCE: Kadambari S et al. Arch Dis Child. 2019;104:552-7.
LJUBLJANA, SLOVENIA – A prospective international surveillance study has provided new insights into the surprisingly substantial clinical burden of viral meningitis caused by enteroviruses and human parechoviruses in young infants, Seilesh Kadambari, MBBS, PhD, said in his ESPID Young Investigator Award Lecture at the annual meeting of the European Society for Paediatric Infectious Diseases.
This comprehensive study captured all cases of laboratory-confirmed enterovirus (EV) and human parechovirus (HPeV) meningitis in infants less than 90 days old seen by pediatricians in the United Kingdom and Ireland during a 13-month period starting in July 2014, a time free of outbreaks. Dr. Kadambari, a pediatrician at the University of Oxford (England), was first author of the study. It was for this project, as well as his earlier studies shedding light on congenital viral infections, that he received the Young Investigator honor.
Among the key findings of the U.K./Ireland surveillance study: The incidence of EV/HPeV meningitis was more than twice that of bacterial meningitis in the same age group and more than fivefold higher than that of group B streptococcal meningitis, the No. 1 cause of bacterial meningitis in early infancy. Moreover, more than one-half of infants with EV/HPeV meningitis had low levels of inflammatory markers and no cerebrospinal fluid pleocytosis, which underscores the importance of routinely testing the cerebrospinal fluid for viral causes of meningitis in such patients using modern molecular tools such as multiplex polymerase chain reaction, according to Dr. Kadambari.
“Also, not a single one of the patients with EV/HPeV meningitis had a secondary bacterial infection – and that has important implications for management of our antibiotic stewardship programs,” he observed.
The study (Arch Dis Child. 2019 Jun;104(6):552-7) identified 668 cases of EV meningitis and 35 of HPeV meningitis, for an incidence of 0.79 and 0.04 per 1,000 live births, respectively. The most common clinical presentations were those generally seen in meningitis: fever, irritability, and reduced feeding. Circulatory shock was present in 43% of the infants with HPeV and 27% of the infants with EV infections.
Of infants with EV meningitis, 11% required admission to an intensive care unit, as did 23% of those with HPeV meningitis. Two babies with EV meningitis died and four others had continued neurologic complications at 12 months of follow-up. In contrast, all infants with HPeV survived without long-term sequelae.
Reassuringly, none of the 189 infants who underwent formal hearing testing had sensorineural hearing loss.
The surveillance study data have played an influential role in evidence-based guidelines for EV diagnosis and characterization published by the European Society of Clinical Virology (J Clin Virol. 2018 Apr;101:11-7).
An earlier study led by Dr. Kadambari documented a hefty sevenfold increase in the rate of laboratory-confirmed viral meningo-encephalitis in England and Wales during 2004-2013 across all age groups (J Infect. 2014 Oct;69[4]:326-32).
He attributed this increase to improved diagnosis of viral forms of meningitis through greater use of polymerase chain reaction. The study, based upon National Health Service hospital records, showed that more than 90% of all cases of viral meningo-encephalitis in infants less than 90 days old were caused by EV, a finding that prompted the subsequent prospective U.K./Ireland surveillance study.
Dr. Kadambari closed by noting the past decade had seen a greatly improved ability to diagnose congenital viral infections, but those improvements are not good enough.
“In the decade ahead, we hope to improve the management of this poorly understood group of infections,” the pediatrician promised.
Planned efforts include a cost-effectiveness analysis of a cytomegalovirus vaccine, an ESPID-funded research project aimed at identifying which EV/HPeV strains are most responsible for outbreaks and isolated severe disease, and gaining insight into the host-immunity factors associated with a proclivity to develop EV/HPeV meningitis in early infancy.
Dr. Kadambari reported having no financial conflicts regarding his studies, which was funded largely by Public Health England and university grants.
SOURCE: Kadambari S et al. Arch Dis Child. 2019;104:552-7.
LJUBLJANA, SLOVENIA – A prospective international surveillance study has provided new insights into the surprisingly substantial clinical burden of viral meningitis caused by enteroviruses and human parechoviruses in young infants, Seilesh Kadambari, MBBS, PhD, said in his ESPID Young Investigator Award Lecture at the annual meeting of the European Society for Paediatric Infectious Diseases.
This comprehensive study captured all cases of laboratory-confirmed enterovirus (EV) and human parechovirus (HPeV) meningitis in infants less than 90 days old seen by pediatricians in the United Kingdom and Ireland during a 13-month period starting in July 2014, a time free of outbreaks. Dr. Kadambari, a pediatrician at the University of Oxford (England), was first author of the study. It was for this project, as well as his earlier studies shedding light on congenital viral infections, that he received the Young Investigator honor.
Among the key findings of the U.K./Ireland surveillance study: The incidence of EV/HPeV meningitis was more than twice that of bacterial meningitis in the same age group and more than fivefold higher than that of group B streptococcal meningitis, the No. 1 cause of bacterial meningitis in early infancy. Moreover, more than one-half of infants with EV/HPeV meningitis had low levels of inflammatory markers and no cerebrospinal fluid pleocytosis, which underscores the importance of routinely testing the cerebrospinal fluid for viral causes of meningitis in such patients using modern molecular tools such as multiplex polymerase chain reaction, according to Dr. Kadambari.
“Also, not a single one of the patients with EV/HPeV meningitis had a secondary bacterial infection – and that has important implications for management of our antibiotic stewardship programs,” he observed.
The study (Arch Dis Child. 2019 Jun;104(6):552-7) identified 668 cases of EV meningitis and 35 of HPeV meningitis, for an incidence of 0.79 and 0.04 per 1,000 live births, respectively. The most common clinical presentations were those generally seen in meningitis: fever, irritability, and reduced feeding. Circulatory shock was present in 43% of the infants with HPeV and 27% of the infants with EV infections.
Of infants with EV meningitis, 11% required admission to an intensive care unit, as did 23% of those with HPeV meningitis. Two babies with EV meningitis died and four others had continued neurologic complications at 12 months of follow-up. In contrast, all infants with HPeV survived without long-term sequelae.
Reassuringly, none of the 189 infants who underwent formal hearing testing had sensorineural hearing loss.
The surveillance study data have played an influential role in evidence-based guidelines for EV diagnosis and characterization published by the European Society of Clinical Virology (J Clin Virol. 2018 Apr;101:11-7).
An earlier study led by Dr. Kadambari documented a hefty sevenfold increase in the rate of laboratory-confirmed viral meningo-encephalitis in England and Wales during 2004-2013 across all age groups (J Infect. 2014 Oct;69[4]:326-32).
He attributed this increase to improved diagnosis of viral forms of meningitis through greater use of polymerase chain reaction. The study, based upon National Health Service hospital records, showed that more than 90% of all cases of viral meningo-encephalitis in infants less than 90 days old were caused by EV, a finding that prompted the subsequent prospective U.K./Ireland surveillance study.
Dr. Kadambari closed by noting the past decade had seen a greatly improved ability to diagnose congenital viral infections, but those improvements are not good enough.
“In the decade ahead, we hope to improve the management of this poorly understood group of infections,” the pediatrician promised.
Planned efforts include a cost-effectiveness analysis of a cytomegalovirus vaccine, an ESPID-funded research project aimed at identifying which EV/HPeV strains are most responsible for outbreaks and isolated severe disease, and gaining insight into the host-immunity factors associated with a proclivity to develop EV/HPeV meningitis in early infancy.
Dr. Kadambari reported having no financial conflicts regarding his studies, which was funded largely by Public Health England and university grants.
SOURCE: Kadambari S et al. Arch Dis Child. 2019;104:552-7.
REPORTING FROM ESPID 2019
CDC updates recommendation for serologic Lyme disease detection
, according to CDC investigators.
At the 1994 Second National Conference on Serologic Diagnosis of Lyme Disease, several groups and organizations convened, recommending a two-test methodology for Lyme disease detection. First, an enzyme immunoassay (EIA) or immunofluorescence assay should be used, followed by a western immunoblot assay for specimens yielding positive or equivocal results. The guideline advised that all future tests should be evaluated against a challenge panel, and that new assays should only move forward if their specificity, sensitivity, and precision equaled or surpassed the performance of tests used in the recommended two-test procedure.
On July 29, 2019, the Food and Drug Administration approved several Lyme disease serologic assays with new indications for use based on a modified two-test methodology, with a second EIA replacing the western immunoblot assay.
“Clearance by FDA of the new Lyme disease assays indicates that test performance has been evaluated and is ‘substantially equivalent to or better than’ a legally marketed predicate test,” the CDC investigators noted (MMWR Morb Mortal Wkly Rep. 2019 Aug 15;68(32):703).
The recommendation advises that FDA-cleared “serologic assays that utilize EIA rather than western immunoblot assay in a two-test format are acceptable alternatives for the laboratory diagnosis of Lyme disease.”
, according to CDC investigators.
At the 1994 Second National Conference on Serologic Diagnosis of Lyme Disease, several groups and organizations convened, recommending a two-test methodology for Lyme disease detection. First, an enzyme immunoassay (EIA) or immunofluorescence assay should be used, followed by a western immunoblot assay for specimens yielding positive or equivocal results. The guideline advised that all future tests should be evaluated against a challenge panel, and that new assays should only move forward if their specificity, sensitivity, and precision equaled or surpassed the performance of tests used in the recommended two-test procedure.
On July 29, 2019, the Food and Drug Administration approved several Lyme disease serologic assays with new indications for use based on a modified two-test methodology, with a second EIA replacing the western immunoblot assay.
“Clearance by FDA of the new Lyme disease assays indicates that test performance has been evaluated and is ‘substantially equivalent to or better than’ a legally marketed predicate test,” the CDC investigators noted (MMWR Morb Mortal Wkly Rep. 2019 Aug 15;68(32):703).
The recommendation advises that FDA-cleared “serologic assays that utilize EIA rather than western immunoblot assay in a two-test format are acceptable alternatives for the laboratory diagnosis of Lyme disease.”
, according to CDC investigators.
At the 1994 Second National Conference on Serologic Diagnosis of Lyme Disease, several groups and organizations convened, recommending a two-test methodology for Lyme disease detection. First, an enzyme immunoassay (EIA) or immunofluorescence assay should be used, followed by a western immunoblot assay for specimens yielding positive or equivocal results. The guideline advised that all future tests should be evaluated against a challenge panel, and that new assays should only move forward if their specificity, sensitivity, and precision equaled or surpassed the performance of tests used in the recommended two-test procedure.
On July 29, 2019, the Food and Drug Administration approved several Lyme disease serologic assays with new indications for use based on a modified two-test methodology, with a second EIA replacing the western immunoblot assay.
“Clearance by FDA of the new Lyme disease assays indicates that test performance has been evaluated and is ‘substantially equivalent to or better than’ a legally marketed predicate test,” the CDC investigators noted (MMWR Morb Mortal Wkly Rep. 2019 Aug 15;68(32):703).
The recommendation advises that FDA-cleared “serologic assays that utilize EIA rather than western immunoblot assay in a two-test format are acceptable alternatives for the laboratory diagnosis of Lyme disease.”
FROM THE MMWR
How to nearly eliminate CLABSIs in children’s hospitals
SEATTLE – Levine Children’s Hospital, in Charlotte, N.C., dropped its central line–associated bloodstream infection rate from 1.13 per 1,000 line days to 0.67 in just a few months, with a mix of common sense steps and public accountability.
Levine Children’s was at about the 50th percentile for CLABSIs, compared with other children’s hospitals, but dropped to the 10th percentile after the changes. There were 21 CLABSIs in 2017, but only 12 in 2018. The hospital went 6 straight months without a CLABSI after the changes were made. The efforts saved about $300,000 and 63 patient days.
“We really had great success,” said Kayla S. Koch, MD, a pediatric hospitalist at Levine Children’s, who presented the findings at Pediatric Hospital Medicine.
Hospital units had been working to reduce CLABSIs, but they were each doing their own thing. “Many of our units were already dabbling, so we just sort of brought them together. We standardized the process and got everyone on the same page,” said copresenter Ketan P. Nadkarni, MD, also a pediatric hospitalist at Levine Children’s.
It wasn’t hard to get buy-in. “I don’t think the units were aware that everyone was doing it differently,” and were on board once the problem was explained. Also, using the same approach throughout the hospital made it easier for nurses and physicians moving between units, he said.
Each morning, the nurse supervisor and patient nurse would partner up at the bedside to check that central venous lines were set up correctly. They examined the alcohol disinfectant caps to make sure they were clean; determined that children were getting chlorhexidine gluconate baths; checked the dressings for bleeding and soiling; noted in the electronic medical record why the patient had a central line; and discussed with hospitalists if it were still needed. Problems were addressed immediately.
These quality processes were all tracked on wall racks placed in plain sight on each unit, including the neonatal and pediatric ICUs. Each central line patient had a card that listed what needed to be done, with a green stripe on one side and a red stripe on the other. If everything was done right, the green side faced out; if even one thing was done wrong, the red side was displayed, for all to see. It brought accountability to the process, the presenters said at the meeting sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.
The wall rack also had the central line audit schedule, plus diagrams that showed every failed item, the reason for it, and the unit’s compliance rate. Anyone walking by could see at a glance how the unit was doing that day and overall.
The number of dressing options was reduced from 10 to 2, a SorbaView SHIELD and a Tegaderm-like dressing, which made it easier to standardize the efforts. A protocol also was put in place to reinforce oozing dressings, instead of automatically changing them. “We were doing too many changes,” Dr. Koch said.
Compliance with the bundle was almost 90%. Staff “really got into it, and it was great to see,” she said.
The “initial success was almost unexpected, and so dramatic.” The goal now is to sustain the improvements, and roll them out to radiology and other places were central lines are placed, Dr. Nadkarni said.
There was no external funding, and the investigators had no disclosures.
SEATTLE – Levine Children’s Hospital, in Charlotte, N.C., dropped its central line–associated bloodstream infection rate from 1.13 per 1,000 line days to 0.67 in just a few months, with a mix of common sense steps and public accountability.
Levine Children’s was at about the 50th percentile for CLABSIs, compared with other children’s hospitals, but dropped to the 10th percentile after the changes. There were 21 CLABSIs in 2017, but only 12 in 2018. The hospital went 6 straight months without a CLABSI after the changes were made. The efforts saved about $300,000 and 63 patient days.
“We really had great success,” said Kayla S. Koch, MD, a pediatric hospitalist at Levine Children’s, who presented the findings at Pediatric Hospital Medicine.
Hospital units had been working to reduce CLABSIs, but they were each doing their own thing. “Many of our units were already dabbling, so we just sort of brought them together. We standardized the process and got everyone on the same page,” said copresenter Ketan P. Nadkarni, MD, also a pediatric hospitalist at Levine Children’s.
It wasn’t hard to get buy-in. “I don’t think the units were aware that everyone was doing it differently,” and were on board once the problem was explained. Also, using the same approach throughout the hospital made it easier for nurses and physicians moving between units, he said.
Each morning, the nurse supervisor and patient nurse would partner up at the bedside to check that central venous lines were set up correctly. They examined the alcohol disinfectant caps to make sure they were clean; determined that children were getting chlorhexidine gluconate baths; checked the dressings for bleeding and soiling; noted in the electronic medical record why the patient had a central line; and discussed with hospitalists if it were still needed. Problems were addressed immediately.
These quality processes were all tracked on wall racks placed in plain sight on each unit, including the neonatal and pediatric ICUs. Each central line patient had a card that listed what needed to be done, with a green stripe on one side and a red stripe on the other. If everything was done right, the green side faced out; if even one thing was done wrong, the red side was displayed, for all to see. It brought accountability to the process, the presenters said at the meeting sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.
The wall rack also had the central line audit schedule, plus diagrams that showed every failed item, the reason for it, and the unit’s compliance rate. Anyone walking by could see at a glance how the unit was doing that day and overall.
The number of dressing options was reduced from 10 to 2, a SorbaView SHIELD and a Tegaderm-like dressing, which made it easier to standardize the efforts. A protocol also was put in place to reinforce oozing dressings, instead of automatically changing them. “We were doing too many changes,” Dr. Koch said.
Compliance with the bundle was almost 90%. Staff “really got into it, and it was great to see,” she said.
The “initial success was almost unexpected, and so dramatic.” The goal now is to sustain the improvements, and roll them out to radiology and other places were central lines are placed, Dr. Nadkarni said.
There was no external funding, and the investigators had no disclosures.
SEATTLE – Levine Children’s Hospital, in Charlotte, N.C., dropped its central line–associated bloodstream infection rate from 1.13 per 1,000 line days to 0.67 in just a few months, with a mix of common sense steps and public accountability.
Levine Children’s was at about the 50th percentile for CLABSIs, compared with other children’s hospitals, but dropped to the 10th percentile after the changes. There were 21 CLABSIs in 2017, but only 12 in 2018. The hospital went 6 straight months without a CLABSI after the changes were made. The efforts saved about $300,000 and 63 patient days.
“We really had great success,” said Kayla S. Koch, MD, a pediatric hospitalist at Levine Children’s, who presented the findings at Pediatric Hospital Medicine.
Hospital units had been working to reduce CLABSIs, but they were each doing their own thing. “Many of our units were already dabbling, so we just sort of brought them together. We standardized the process and got everyone on the same page,” said copresenter Ketan P. Nadkarni, MD, also a pediatric hospitalist at Levine Children’s.
It wasn’t hard to get buy-in. “I don’t think the units were aware that everyone was doing it differently,” and were on board once the problem was explained. Also, using the same approach throughout the hospital made it easier for nurses and physicians moving between units, he said.
Each morning, the nurse supervisor and patient nurse would partner up at the bedside to check that central venous lines were set up correctly. They examined the alcohol disinfectant caps to make sure they were clean; determined that children were getting chlorhexidine gluconate baths; checked the dressings for bleeding and soiling; noted in the electronic medical record why the patient had a central line; and discussed with hospitalists if it were still needed. Problems were addressed immediately.
These quality processes were all tracked on wall racks placed in plain sight on each unit, including the neonatal and pediatric ICUs. Each central line patient had a card that listed what needed to be done, with a green stripe on one side and a red stripe on the other. If everything was done right, the green side faced out; if even one thing was done wrong, the red side was displayed, for all to see. It brought accountability to the process, the presenters said at the meeting sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.
The wall rack also had the central line audit schedule, plus diagrams that showed every failed item, the reason for it, and the unit’s compliance rate. Anyone walking by could see at a glance how the unit was doing that day and overall.
The number of dressing options was reduced from 10 to 2, a SorbaView SHIELD and a Tegaderm-like dressing, which made it easier to standardize the efforts. A protocol also was put in place to reinforce oozing dressings, instead of automatically changing them. “We were doing too many changes,” Dr. Koch said.
Compliance with the bundle was almost 90%. Staff “really got into it, and it was great to see,” she said.
The “initial success was almost unexpected, and so dramatic.” The goal now is to sustain the improvements, and roll them out to radiology and other places were central lines are placed, Dr. Nadkarni said.
There was no external funding, and the investigators had no disclosures.
REPORTING FROM PHM 2019