Infective endocarditis related to a coronary artery fistula with an unusual localization and ectatic coronary arteries
Demet Menekse Gerede1, Aynur Acibuca, Caglar Uzun
1Department of Cardiology, Ankara University School of Medicine, Ankara, Turkey.
Insights
Coronary artery fistulas (CAF) are rare but can cause serious heart issues. This case highlights an unusual CAF linked to infective endocarditis, requiring surgical treatment for both conditions.
Area of Science:
- Cardiology
- Cardiac Surgery
- Infectious Diseases
Background:
- Coronary artery fistulas (CAF) are uncommon congenital or acquired heart abnormalities.
- CAFs can lead to significant complications including heart failure and cardiac tamponade.
- CAF has been anecdotally linked to bacterial endocarditis.
Observation:
- A 31-year-old male presented with native valve infective endocarditis.
- The endocarditis was associated with an unusual coronary artery fistula (CAF) between the circumflex artery and the left ventricle.
- The patient also exhibited giant coronary arteries, with the circumflex and left main coronary arteries measuring 19 mm in diameter.
Findings:
- Computed tomography angiography and transesophageal echocardiography were used to image the giant coronary arteries and the CAF.
- Surgical valve intervention was necessary due to antibiotic-resistant vegetations.
- The coronary artery fistula was surgically repaired concurrently with valve surgery.
Implications:
- This case underscores the importance of considering CAF in patients presenting with infective endocarditis.
- Unusual CAF presentations, even with giant coronary arteries, require tailored surgical management.
- Successful surgical treatment of both infective endocarditis and CAF can be achieved simultaneously.
Abstract:
Coronary artery fistulas (CAF) are a rare cardiac anomaly that can be either congenital or acquired. CAFs have clinical significance because of complications such as dyspnea on exertion, congestive heart failure, and cardiac tamponade. The literature also contains case reports of CAF presenting as bacterial endocarditis. We describe a 31-year-old man who presented with native valve infective endocarditis related to an unusual form of a CAF between the circumflex coronary artery and left ventricle. He also had giant coronary arteries, which were imaged with computed tomography angiography and transesophageal echocardiography. The diameter of the circumflex coronary artery and left main coronary artery was measured as 19 mm. Surgical intervention for heart valves was performed because of vegetations resistant to continued antibiotic treatment. At the same time, the CAF was treated with surgery.
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