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J Thorac Cardiovasc Surg 1998;115:1032-1036
© 1998 Mosby, Inc.

SURGERY FOR CONGENITAL HEART DISEASE

Atrioventricular valve function after single patch repair of complete atrioventricular septal defect in infancy: How early should repair be attempted?

From the Divisions of Cardiothoracic Surgery^a and Pediatric Cardiology,^b University of California, San Francisco, Calif.

Read at the Seventy-seventh Annual Meeting of The American Association for Thoracic Surgery, Washington, D.C., May 4-7, 1997.

Received for publication May 12, 1997. Revisions requested June 30, 1997; revisions received Oct. 27, 1997. Accepted for publication Oct. 29, 1997. Address for reprints: V. Mohan Reddy, MD, 505 Parnassus Ave., M589, San Francisco, CA 94143-0118.

Background: Though repair of complete atrioventricular septal defect in infancy has become routine at most centers, it is not unusual for very young infants to be managed medically because of concerns about the fragility of the atrioventricular valve tissue. Methods: Since July 1992, seventy-two infants have undergone primary repair of complete atrioventricular septal defects at a median age of 3.9 months (40% < 3 months). A single-patch technique was used in all patients. The cleft was closed completely in 61 patients and partially (n = 10) or not at all (n = 1) in select patients at risk for valve stenosis. Left atrioventricular valve annuloplasty was performed in 18 patients. On the basis of transesophageal echocardiographic findings, 10 patients were returned to bypass for revision of the valve repair. Results: There was one early death in a patient with single left papillary muscle, no early reoperations, and no new permanent arrhythmias. Only three patients had moderate left atrioventricular valve regurgitation at discharge. During a median follow-up of 24 months, there was one late death and five reoperations for left atrioventricular valve regurgitation (n = 2) and/or systemic outflow obstruction (n = 4). Follow-up left atrioventricular valve regurgitation was moderate in three patients, mild in 14, and none/trace in 54. Age had no relation to postoperative atrioventricular valve regurgitation, death, or reoperation. Conclusions: Despite concerns about fragility of valve tissue in very young patients, excellent results can be achieved with meticulous techniques. From neonates to older infants, age at repair does not influence outcome or valve function.

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