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Ann Thorac Surg 1989;48:560-564
© 1989 The Society of Thoracic Surgeons

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Articles

Evolution of the Management of Anomalous Left Coronary Artery: A New Surgical Approach

Departments of Cardiothoracic Surgery and Cardiology, The Children's Hospital and University of Colorado Health Sciences Center, Denver, Colorado

Accepted for publication June 28, 1989.

^* Address reprint requests to Dr Clarke, University of Colorado Health Sciences Center, 4200 East Ninth Avenue, C-310, Denver, CO 80262

Twelve patients with anomalous left coronary artery (LCA) from the pulmonary artery were treated surgically. Mean age was 13 months and mean weight, 7.7 kg. One of the following techniques was used in 8 patients: suture obliteration of the coronary orifice, ligation of the anomalous LCA and grafting of the internal mammary artery to the distal LCA, aortic reimplantation of the anomalous LCA, creation of an aortopulmonary window, and direct anastomosis to the right subclavian artery. In 4 patients, a new technique to establish a two-coronary artery system involved tube extension of the anomalous LCA with pulmonary artery wall and then anastomosis to the right subclavian artery using cardiopulmonary bypass without aortic cross-clamping. There were two hospital deaths (17%) and one late death. The condition of the 9 long-term survivors was improved at late follow-up. Postoperative assessment showed smaller Q wave on the electrocardiogram, reduced cardiac size, and good left ventricular function. All patients in whom the repair was done using the new technique were free from postoperative cardiac complications, had shortened hospital stays, and were alive with a patent two-coronary artery system at late follow-up. We believe this approach is a safer method for establishing a two-coronary artery system in infants and small children with an anomalous LCA arising from the pulmonary artery.

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