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Anomalous origin of the left coronary artery: the effects of aortocoronary vein bypass on left ventricular function
Insights
Surgical repair of anomalous left coronary artery from the pulmonary artery improved cardiac function in a young girl. Aortocoronary vein bypass restored left ventricular contractility and ejection fraction, resolving symptoms.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Disease
- Cardiovascular Surgery
Background:
- Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital heart defect.
- ALCAPA can lead to severe left ventricular dysfunction, mitral regurgitation, and heart failure in infants and children.
Purpose of the Study:
- To describe the diagnosis, evaluation, and surgical management of ALCAPA.
- To report the long-term outcomes of aortocoronary vein bypass surgery for ALCAPA.
Main Methods:
- Diagnosis involved cardiac catheterization and angiography.
- Surgical treatment consisted of aortocoronary vein bypass.
- Postoperative assessment included cardiac catheterization and left ventricular volume studies.
Main Results:
- Aortocoronary vein bypass graft was patent post-surgery.
- Significant left coronary artery flow originated from right coronary artery anastomoses.
- Left ventricular end-systolic volume decreased, and ejection fraction increased significantly, indicating improved contractility.
Conclusions:
- Surgical correction of ALCAPA via aortocoronary vein bypass can lead to substantial improvement in left ventricular function.
- Patients can achieve long-term recovery and remain symptom-free after successful surgical intervention.
Abstract:
The diagnosis, angiographic evaluation and surgical treatment by aortocoronary vein bypass are described in a 3(1/2)-year-old girl with anomalous origin of the left coronary artery from the pulmonary artery. The anomaly had resulted in cardiac dilatation, diminished left ventricular contractility, an aneurysm of the left ventricular free wall and mitral regurgitation.At the postoperative cardiac catheterization the graft was demonstrated to be patent, but a significant proportion of the flow to the left coronary artery was derived from anastomotic connections with the right coronary artery. The most striking evidence of improvement was obtained from the left ventricular volume studies which showed that the end systoiic volume had decreased from 85 to 49 ml./m.(2) with an increase in ejection fraction from 0.39 to 0.62, suggesting enhanced left ventricular contractility after surgery.The patient continues to do well and is free from symptoms.