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Coronary artery-pulmonary artery fistula in pulmonary atresia with ventricular septal defect
Insights
This study details two rare cases of coronary artery-pulmonary artery fistula combined with pulmonary atresia and ventricular septal defect. Both patients underwent successful surgical repair, highlighting a unique congenital heart malformation.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Congenital Heart Disease
Background:
- Coronary artery-pulmonary artery fistula is a rare congenital anomaly.
- Pulmonary atresia with ventricular septal defect (PA/VSD) presents significant challenges in pediatric cardiac surgery.
- The simultaneous occurrence of both conditions is exceptionally rare.
Observation:
- Two pediatric patients presented with a complex congenital heart defect: coronary artery-pulmonary artery fistula and PA/VSD.
- A confluent central pulmonary artery originated from the proximal left coronary artery in both cases.
- Large collateral vessels from the descending aorta supplemented pulmonary blood flow.
Findings:
- No coronary arterial stenosis was identified in either patient.
- The fistulous connection between the coronary artery and pulmonary artery was substantial.
- Patients showed no signs of myocardial ischemia on electrocardiograms.
Implications:
- This case series expands the understanding of rare congenital heart malformations.
- Successful surgical outcomes in these complex cases offer valuable insights for treatment strategies.
- Further research into the embryological origins of this combined defect is warranted.
Abstract:
This paper reports two patients presenting a combination of coronary artery-pulmonary artery fistula and pulmonary atresia with ventricular septal defect. A confluent central pulmonary artery arose from the proximal portion of the left coronary artery in both patients. The fistulous segment between the coronary artery and the central pulmonary artery was large, and no coronary arterial stenosis was found in either patient. Besides this fistulous origin of the pulmonary blood supply, large collateral vessels originated from the descending aorta in both patients. Neither patient has shown findings of myocardial ischemia, at least in consecutive rest and exercise electrocardiograms. Both patients were successfully operated, at the ages of 3 and 8 years, respectively. The clinical and embryological implications of this rare malformation are briefly reviewed.