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Acinetobacter calcoaceticus-baumannii complex bacteremia: analysis of 82 cases
Summary
Hospital-acquired Acinetobacter bacteremia is serious, often affecting critically ill patients. Prompt diagnosis and appropriate antibiotic treatment are crucial for survival.
Area of Science:
- Infectious Diseases
- Clinical Microbiology
- Hospital Epidemiology
Background:
- Acinetobacter calcoaceticus-baumannii complex bacteremia is a significant hospital-acquired infection.
- This study investigated cases over a 33-month period at a major hospital.
Purpose of the Study:
- To analyze the characteristics, predisposing factors, and outcomes of Acinetobacter calcoaceticus-baumannii complex bacteremia.
- To identify effective antimicrobial agents and factors influencing mortality.
Main Methods:
- Retrospective analysis of 82 cases of Acinetobacter calcoaceticus-baumannii complex bacteremia.
- Evaluation of patient demographics, clinical conditions, predisposing factors, in vitro antibiotic susceptibility, and mortality.
Main Results:
- All 82 cases were hospital-acquired, with 28 involving polymicrobial bacteremia.
- Common predisposing factors included central venous catheterization, intubation, prior antibiotics, and prolonged hospitalization.
- Amikacin, tobramycin, and ceftazidime showed in vitro effectiveness; 39% of patients died, with 23% directly attributed to septicemia.
Conclusions:
- Polymicrobial bacteremia, inappropriate antimicrobial therapy, and prior antibiotic treatment adversely affected mortality.
- Appropriate antimicrobial therapy was critical for survival, highlighting the need for early diagnosis and effective treatment.