Giant coronary artery fistula connecting the left coronary sinus with the superior atriocaval junction

Area of Science:

• Cardiology
• Congenital Heart Disease
• Surgical Innovation

Background:

• Congenital fistulas involving the aortic sinus of Valsalva and the right atrium are rare but can lead to serious complications.
• Bacterial endocarditis is a significant risk factor and complication associated with these fistulas.
• Surgical intervention is often necessary for definitive management, balancing risks and benefits.

Observation:

• A young male patient presented with a giant congenital fistula between the left Valsalva sinus and the right atriocaval junction.
• The patient had a recent history of bacterial endocarditis, highlighting the risk of recurrent infection.
• Surgical closure was chosen over percutaneous methods due to concerns about potential coronary artery complications.

Findings:

• Surgical closure of the giant aorto-atrial fistula was successfully performed.
• The procedure effectively corrected the left-to-right shunt, mitigating risks of endocarditis recurrence and aortic root distortion.
• One-year follow-up echocardiography showed stable dimensions of the residual chamber connected to the aortic root.

Implications:

• Simple surgical closure, without direct intervention on the fistula's coronary origin, can be an effective and definitive treatment for giant aorto-atrial fistulas.
• This approach may reduce the need for more complex procedures, potentially lowering surgical risks.
• The findings support surgical closure as a safe and effective strategy for managing these complex congenital cardiac anomalies.