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J Thorac Cardiovasc Surg 1994;107:367-0373
© 1994 Mosby, Inc.

Surgery for Congenital Heart Disease

Aortic root replacement with pulmonary autograft in children

Rotterdam, The Netherlands

From the Departments of Cardiothoracic Surgery and Pediatric Cardiology, University Hospital Dijkzigt and Sophia Children's Hospital Rotterdam, The Netherlands.

Received for publication March 25, 1993. Accepted for publication July 30, 1993. Address for reprints: P. H. Schoof, MD, Department of Cardiothoracic Surgery, de Weezenlanden Hospital, Groot Wezenland 20, 8011 JW Zwolle, The Netherlands.

Abstract

Between September 1988 and February 1993, 14 patients whose ages ranged from 3 months to 16 years (mean 11.1 ± 4.3 years) underwent replacement of the aortic root with the autologous pulmonary root for aortic valve disease. The follow-up was 4 years (cumulative total of 25.2 patient-years). There was no early mortality. Late mortality (one patient) was 7.1% (95% confidence limits 0% to 21%). This patient had juvenile rheumatoid arthritis and died of consequent congestive heart failure with autograft failure 6 months after operation. Event-free survival after 4 years was 78.6% (95% confidence limits 50% to 95%). One patient was reoperated on because of autograft failure caused by a relapse of rheumatic fever. One patient operated on for critical neonatal aortic stenosis has subnormal exercise tolerance because of restrictive cardiomyopathy and pulmonary homograft regurgitation. The other 12 patients were in New York Heart Association functional class I at the end of follow-up. There was no prevalence of bacterial endocarditis. There were no signs of primary structural degeneration of the pulmonary autograft. During follow-up, in eight patients, increased anulus diameter of the pulmonary autograft could be demonstrated by precordial two-dimensional echocardiography, suggesting growth of the autograft. Our experience shows that aortic root replacement with the pulmonary autograft can be done with low mortality and morbidity in children with aortic valve disease. The operation seems to be contraindicated in children with juvenile rheumatoid arthritis because of the risk of recurrence of rheumatic disease in the autograft. The pulmonary autograft has also been shown to be susceptible to recurrence of rheumatic inflammation in children with a history of acute rheumatic fever. Despite pulmonary autograft replacement of the aortic valve in infants with critical valvular aortic stenosis and endocardial fibroelastosis, clinical results may be poor. Growth of the autograft is suggested by echocardiographic follow-up. We consider aortic root replacement with the pulmonary autograft the procedure of choice in children who require aortic valve replacement. (J THORAC CARDIOVASC SURG 1994;107:367-73)

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