Coronary arterial fistula

Area of Science:

• Cardiology
• Congenital Heart Disease
• Cardiac Surgery

Background:

• Congenital coronary artery anomalies are rare and can present with complex cardiac malformations.
• Understanding the embryological basis of these anomalies is crucial for diagnosis and management.

Observation:

• Two cases are presented with coronary arterial fistulas directly communicating with the right ventricle.
• Atypical origin of coronary arteries from the pulmonary artery or other great vessels, rather than the aorta, was observed.
• Absence of normal proximal connections between coronary arteries and the aorta was a key finding.

Findings:

• The coronary fistulas were associated with severe congenital heart defects: pulmonary valvular atresia, tricuspid valvular stenosis, and an intact ventricular septum.
• Detailed clinical and autopsy findings were documented for both cases.

Implications:

• These findings highlight a specific pattern of congenital heart disease involving coronary artery anomalies and right-sided obstructive lesions.
• Elucidating the possible pathogenesis may improve diagnostic accuracy and inform surgical strategies for similar complex congenital heart malformations.