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Pneumococcal aortic valve endocarditis causing aortopulmonary artery fistula
A Endara1, M A Corkeron, A M Diqer
1Department of Cardiothoracic Surgery, Townsville General Hospital, Queensland, Australia. endaras@health.qld.gov.au
Abstract:
We report a case of an aortic-pulmonary artery fistula secondary to acute bacterial endocarditis and aortic root abscess formation. The patient presented with generalized symptoms and an initial pneumococcal pneumonia, then developed respiratory and cardiac failure necessitating ventilation and inotropic agents. An echocardiogram showed a vegetation in the aortic valve, an abscess involving the aortic root, and suggested a fistula between the aorta and main pulmonary artery, which was confirmed at emergent operation. Despite a complicated early postoperative course the patient has made a full recovery.
Insights
Acute bacterial endocarditis caused an aortic-pulmonary artery fistula and aortic root abscess. Prompt surgical intervention led to a full recovery despite initial complications.
Area of Science:
- Cardiology
- Infectious Diseases
- Thoracic Surgery
Background:
- Bacterial endocarditis can lead to severe cardiac complications.
- Aortic root abscesses are rare but life-threatening conditions.
- Aortic-pulmonary artery fistulas require urgent diagnosis and management.
Observation:
- A patient presented with symptoms of pneumococcal pneumonia, progressing to respiratory and cardiac failure.
- Echocardiography revealed aortic valve vegetation, aortic root abscess, and a suspected aortopulmonary fistula.
- The patient required mechanical ventilation and inotropic support due to hemodynamic instability.
Findings:
- Emergent surgery confirmed the aortic-pulmonary artery fistula.
- The fistula was a direct consequence of the aortic root abscess secondary to bacterial endocarditis.
- Despite a complex postoperative period, the patient achieved a complete recovery.
Implications:
- This case highlights the critical importance of early diagnosis and aggressive management of bacterial endocarditis.
- Prompt surgical repair is essential for aortopulmonary fistulas to prevent fatal outcomes.
- Successful treatment of complex cardiac abscesses and fistulas is achievable with timely intervention.