Diffuse Coronary Artery Fistula Leading to Syncope and Treated with Transcatheter Coil Occlusion and a Defibrillator:...

Area of Science:

• Cardiology
• Interventional Cardiology
• Cardiac Electrophysiology

Background:

• Coronary artery fistulas are uncommon congenital or acquired anomalies.
• These fistulas can lead to significant cardiovascular complications, including heart failure and arrhythmias.

Observation:

• A 47-year-old male presented with syncope and echocardiographic evidence of left ventricular dysfunction.
• Coronary angiography revealed extensive coronary artery fistulas draining into the left ventricle.
• Electrophysiology study induced ventricular fibrillation.

Findings:

• The patient was diagnosed with extensive coronary fistulas complicated by ventricular arrhythmias and left ventricular dysfunction.
• An implantable cardioverter defibrillator was implanted to manage the risk of sudden cardiac death.
• Subsequent nuclear scanning detected ischemia, leading to successful microcoil occlusion of the fistula.

Implications:

• This case underscores the importance of recognizing coronary artery fistulas as a cause of potentially fatal ventricular arrhythmias.
• Management requires a multi-faceted approach, including arrhythmia control and definitive fistula treatment.
• Interventional techniques like microcoil occlusion offer a viable treatment option for complex coronary fistulas.