Coronary Artery Fistulas: Case Series and Literature Review

Area of Science:

• Cardiology
• Congenital Heart Disease

Background:

• Congenital coronary artery fistulas (CCAFs) are uncommon cardiac anomalies.
• Increased accessibility of coronary angiography and multidetector computed tomography (MDCT) leads to more frequent diagnosis of CCAFs.
• CCAFs are often incidentally discovered during investigations for chest pain or heart failure.

Observation:

• Intervention via transcatheter or surgical closure is technically feasible for CCAFs.
• While many patients are asymptomatic immediately post-intervention, follow-up reveals potential sequelae.
• Reported complications include residual leakage, thrombosis, myocardial infarction, and coronary stenosis.

Findings:

• The natural history of CCAFs suggests a potential for spontaneous resolution or stable asymptomatic disease in some cases.
• Treatment outcomes highlight a trend towards conservative management in asymptomatic individuals.
• Evidence indicates that intervention, while possible, carries risks that may outweigh benefits in select patient groups.

Implications:

• The findings support a paradigm shift towards watchful waiting for incidental CCAFs in asymptomatic patients.
• This approach aims to mitigate risks associated with invasive procedures.
• Further research is needed to refine management guidelines and long-term surveillance strategies for CCAFs.