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Bacterial mediastinitis after heart transplantation
R T Baldwin1, B Radovancevic, M S Sweeney
1Department of Cardiovascular Surgery, Texas Heart Institute, St. Luke's Episcopal Hospital, Houston 77225-0345.
Summary
Bacterial mediastinitis occurred in 2.5% of heart transplant patients. Predisposing factors and prompt surgical intervention with antibiotics were key to successful treatment and preventing recurrence.
Area of Science:
- Cardiology
- Infectious Diseases
- Surgical Critical Care
Background:
- Mediastinitis is a serious complication following heart transplantation.
- Identifying predisposing factors is crucial for prevention and management.
Purpose of the Study:
- To investigate the incidence, predisposing factors, and management outcomes of bacterial mediastinitis after isolated heart transplantation.
Main Methods:
- Retrospective analysis of 361 isolated heart transplant patients.
- Review of clinical data, predisposing factors, diagnostic methods (clinical findings, CT scans), and microbial cultures.
- Evaluation of treatment strategies including percutaneous drainage, antibiotics, and surgical debridement.
Main Results:
- Nine patients (2.5%) developed bacterial mediastinitis.
- Common predisposing factors included diabetes, repeat operations, S. aureus pneumonitis, and allograft rejection.
- Staphylococcus aureus was the most common pathogen.
- Successful treatment achieved with percutaneous drainage and antibiotics in stable cases, and surgical debridement in others.
- No recurrence observed during follow-up.
Conclusions:
- Bacterial mediastinitis is a significant risk after heart transplantation, often associated with specific predisposing conditions.
- Prompt diagnosis and tailored treatment, including surgical intervention when necessary, lead to favorable outcomes without recurrence.