Idiopathic Atrial Fibrillation and Coronary Arteriovenous Fistulae: Is There a Link

Area of Science:

• Cardiology
• Cardiac Electrophysiology
• Vascular Surgery

Background:

• Atrial fibrillation (AF) is a common arrhythmia with largely unknown causes.
• Coronary arteriovenous fistula (CAVF) is increasingly recognized as a potential contributor to AF.
• The specific mechanisms linking CAVF to AF require further elucidation.

Purpose of the Study:

• To investigate the potential causal link between coronary arteriovenous fistula and atrial fibrillation.
• To present a case study of new-onset AF secondary to an anomalous coronary artery to superior vena cava fistula.
• To highlight the importance of considering and diagnosing CAVF in patients with unexplained AF.

Main Methods:

• Case report presentation of a patient with new-onset AF and diagnosed anomalous fistula.
• Review of existing literature on the association between CAVF and AF.
• Analysis of treatment outcomes for fistula closure and subsequent AF resolution.

Main Results:

• A patient with new-onset AF was diagnosed with a right coronary artery to superior vena cava fistula.
• Surgical correction of the fistula led to permanent resolution of atrial fibrillation.
• Literature review supports a potential association between CAVF and AF.

Conclusions:

• Coronary arteriovenous fistula may be an underdiagnosed and treatable cause of atrial fibrillation.
• Further research is warranted to confirm the prevalence and mechanisms of AF in CAVF patients.
• Timely diagnosis and treatment of CAVF can potentially resolve associated atrial fibrillation.