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Ann Thorac Surg 1999;67:169-172
© 1999 The Society of Thoracic Surgeons
a Department of Cardiac Surgery, Childrens Hospital-Boston, Harvard Medical School, Boston, Massachusetts, USA
b Department of Cardiology, Childrens Hospital, Harvard Medical School, Boston, Massachusetts, USA
Accepted for publication October 26, 1998.
Address reprint requests to Dr del Nido, Department of Cardiac Surgery, Childrens Hospital, 300 Longwood Ave, Boston, MA 02115
e-mail: delnido{at}a1.tch.harvard.edu
Presented at the Thirty-third Annual Meeting of The Society of Thoracic Surgeons, San Diego, CA, Feb 35, 1997.
Background. Repair of anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) in infants carries a high operative risk, particularly in infants with myocardial infarction and poor left ventricular function. The marked recovery of left ventricular function reported late after repair, however, suggests that an aggressive approach to repair should be undertaken.
Methods. Of 31 children undergoing primary repair of ALCAPA at our institution from 1987 to 1996, 26 were infants (6 weeks to 9 months old). All but 2 had severe left ventricular dysfunction, and 8 had moderate to severe mitral regurgitation. Seven children were unable to be weaned from cardiopulmonary bypass because of poor left ventricular function and elevated left atrial pressure. These 7 children were placed on mechanical left ventricular support using a centrifugal pump, with support ranging from 2.2 to 70.6 hours.
Results. One child died shortly after the start of left ventricular assist (2.2 hours), and another died of arrhythmia within 24 hours after successful decannulation. All 5 survivors had significant improvement in left ventricular function, with 2 requiring late mitral valve repair.
Conclusions. Infants with ALCAPA who have severe left ventricular dysfunction represent a higher risk group for repair. However, with use of mechanical circulatory support in those unable to be weaned from cardiopulmonary bypass, a high survival rate can be achieved with good long-term recovery. We conclude that an aggressive approach to early repair in all children with ALCAPA is warranted, regardless of the degree of left ventricular dysfunction.
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