Clinical Scorecard: Analysis of Bloodstream Infection Epidemiology and Patient Outcomes in a Burns Intensive Care Unit: A Retrospective Study Over Eight Years
At a Glance
Category
Detail
Condition
Bloodstream infections (BSIs) in patients with burns
Key Mechanisms
Infections caused by gram-positive and gram-negative bacteria, including multidrug-resistant (MDR) pathogens, leading to sepsis and increased mortality
Target Population
Patients admitted to a burns intensive care unit (BICU) with thermal burns and other burn injuries
Care Setting
Burns Intensive Care Unit (BICU) in a tertiary hospital
Key Highlights
BSI occurred in 21% of patients admitted to the BICU, associated with older age, higher severity scores, larger burn surface area, and more complications.
Gram-positive pathogens like Staphylococcus aureus predominate early (first week), while MDR gram-negative bacteria, especially Pseudomonas aeruginosa, increase after 15 days.
MDR bacteria infections delay effective antimicrobial therapy and increase mortality risk; local epidemiology guides empirical antibiotic selection.
Guideline-Based Recommendations
Diagnosis
Define BSI by ≥1 positive blood culture with the same microorganism and resistance phenotype.
Consider BSI early if within 7 days of admission, late if after 7 days.
Perform surveillance cultures from burned skin, endotracheal aspirates, and rectal swabs on admission and periodically.
Management
Initiate probabilistic antibiotic treatment active against microorganisms isolated from surveillance cultures in sepsis.
Reevaluate antibiotic therapy based on blood culture results.
Typical antibiotic duration: 7 days for gram-negative BSI, 14 days for Staphylococcus aureus BSI.
Multidisciplinary team involvement recommended for antibiotic duration decisions.
Monitoring & Follow-up
Regular surveillance cultures to detect colonization and guide therapy.
Monitor for emergence of MDR bacteria during prolonged hospitalization.
Assess clinical severity scores and complications to identify patients at higher risk.
Risks
Prolonged hospitalization, invasive procedures (intubation, central lines, catheters), prior antibiotic exposure increase risk of MDR bacterial BSI.
BSI leads to a 4-fold increase in mortality in burn patients.
Delayed effective antimicrobial therapy due to MDR pathogens increases death risk.
Patient & Prescribing Data
Burn patients admitted to BICU, including those with severe burns (>20% TBSA or >10% full-thickness burns).
Empirical antimicrobial therapy should be guided by local epidemiology and surveillance cultures to cover prevalent MDR pathogens, especially MDR Pseudomonas aeruginosa after prolonged hospitalization.
Clinical Best Practices
Implement routine surveillance cultures on admission and weekly thereafter to detect colonization.
Use multidisciplinary team discussions to tailor antibiotic duration and choice.
Adapt empirical antibiotic therapy based on temporal trends of pathogen prevalence (early gram-positive, late gram-negative MDR bacteria).
Prioritize infection prevention and antimicrobial stewardship to reduce MDR bacterial transmission.
by Héloïse Petit, Christian de Tymowski, Emmanuel Dudoignon, Mathilde Liberge, Jean-Luc Donay, Maite Chaussard, Maxime Coutrot, Alexandru Cupaciu, Lucie Guillemet, Benjamin Deniau, Alexandre Pharaboz, Mourad Benyamina, Blandine Denis, Guillaume Mellon, Matthieu Lafaurie, Alexandre Alanio, François Dépret, Béatrice Berçot, François Caméléna
