Infectious Disease and Sepsis Articles

Sep 272011
 

Perhaps the most contentious debate in critical care is whether and when to transfuse blood to patients, especially those with acute lung injury and/or septic shock. FACTT showed less fluids (which could include blood) are better for ALI/ARDS, but transfusion wasn’t controlled and its contribution to the outcomes is unknown. Practicing physicians vary widely in [… read more]

Sep 242011
 

Two kids under 5, one in Indiana and the other in Pennsylvania, have contracted a new reassorted swine flu: H3N2. The Pennsylvania child had had direct contact with a pig at an agricultural fair; the Indiana kid had been cared for by someone who had come in contact with a pig recently. Both children recovered [… read more]

Sep 222011
 

Observational epidemiologic data on 132 California kids who caught pertussis (of 15,000 in a cohort), presented at the American Society for Microbiology meeting last week, suggested that protection from pertussis vaccination may wane as soon as 3 years after the last dose. Kids age 8-12 were most at risk (the last dose is given at [… read more]

Sep 122011
 

Several favorable randomized trials and a meta-analysis have suggested procalcitonin is a reliable and useful biomarker of infection, including in the ICU. In contrast, Jensen et al report use of a procalcitonin-driven algorithm to guide antimicrobial therapy in 9 ICUs in Denmark seemed to cause a bit of harm. They randomized 1,200 patients to either [… read more]

Aug 312011
 

Grijalva et al analyzed the Nationwide Inpatient Sample (data from U.S. hospitalizations) and found that the rate of hospitalization for parapneumonic empyema doubled from 3 per 100,000 in 1996, to 6 in 2008. The rate of empyemas due to Streptococcus pneumoniae was stable; the increases were in non-pneumococcal infections like Staphylococcus. Mortality was unchanged overall [… read more]

Aug 232011
 

Obesity was named as a risk factor for severe H1N1 influenza during the pandemic. What about for influenza in general? Kwong et al analyzed community survey data in Ontario over 12 influenza seasons, 1996-2008. Severe obesity (BMI >= 35) carried an odds ratio of 2.1 for respiratory hospitalization during flu season. In those with no [… read more]

Aug 212011
 

For 10 years, Zahar et al prospectively observed 3,588 patients developing severe sepsis & septic shock who ended up in French ICUs. Their sample captured a broad array of infections acquired in the community, the hospital ward, or the ICU (about 1/3 each). After multivariate assessment, they could not find an independent influence on mortality [… read more]

Aug 212011
 

Schuetz et al review the 16 randomized controlled trials (n=4,647) testing procalcitonin-guided vs. standard care on the outcomes of antibiotic use, mortality, and infection control. Most of these studies were done in Europe; 6 were in ICU patients. Using procalcitonin reduced antibiotic use in all settings (primary care, emergency department, ICU) with no detectable differences [… read more]

Aug 172011
 

Johnson et al reviewed charts in a retrospective case-control cohort study on 754 consecutive patients at Barnes-Jewish with severe sepsis or shock due to Gram-negative bacteremia. The exposure was receipt of antibiotics in the previous 90 days. 310 of the bacteremic patients had received antibiotics previously. Compared to unexposed controls, the previously antibiotic-exposed had a [… read more]

Aug 102011
 

In the “why didn’t I think of that?” department: Menzies et al performed pleural fluid sampling on 62 patients with clinical pleural infection, and sent samples to the lab in both standard tubes and in blood culture bottles inoculated at the bedside. 20 standard samples were culture-positive; adding the positive inoculated samples identified an additional [… read more]

Jul 152011
 

In a prospective observational study of hospitalized patients with pneumonia, 20% met criteria for HCAP. Those with health care associated pneumonia were sicker of course, but it was impossible to tease out attributable mortality due to the multitude of interrelated confounders present. Antibiotic resistant organisms per se were not shown to cause death often enough [… read more]

Jul 062011
 

Singanayagam et al prospectively observed 490 COPD patients admitted for community acquired pneumonia with COPD; 77% were using inhaled corticosteroids. As would be expected, ICS users had worse COPD (higher GOLD stage) than non-ICS-users. There were no differences between cohorts in pneumonia severity, mortality at 30 or 180 days, or requirement for mechanical ventilation or [… read more]

Jun 152011
 

No one knows, say Lee et al. They report on 27 Korean soldiers who were exposed to 5 barracks-mates with active TB; 26 eventually “converted” by tuberculin skin test/PPD or by interferon-gamma release assay. One-time TST/PPD identified 21, or 78%. IGRA every two weeks eventually diagnosed 26 (96%), but it took 14 weeks for 3 [… read more]