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The Annals of Thoracic Surgery, Vol 45, 273-277, Copyright © 1988 by The Society of Thoracic Surgeons

ARTICLES

Pulmonary homograft implantation for ventricular outflow tract reconstruction: early phase results

LB McGrath, L Gonzalez-Lavin and D Graf
Department of Surgery, Deborah Heart and Lung Center, Browns Mills, NJ 08015.

The pulmonary valve homograft (PH) has been reported to have potential advantages over the aortic valve homograft, including a larger diameter, a thinner wall, and decreased intrinsic calcification. From January 16, 1986, to July 14, 1987, eight consecutive patients underwent repair of congenital cardiac anomalies using a cryopreserved PH. Patients ranged in age from 18 months to 32 years. Diagnoses included tetralogy of Fallot with pulmonary atresia (3 patients); tetralogy with absent pulmonary valve (1 patient); corrected transposition with pulmonic stenosis (1 patient); transposition of the great arteries, ventricular septal defect, and pulmonic stenosis (2 patients); and double-outlet right ventricle with pulmonic stenosis (1 patient). The PH was implanted orthotopically in the patient with absent pulmonary valve, and in the other 7 it was placed as a valved extracardiac conduit. Two of the tetralogy patients with severe bifurcational pulmonary stenosis and another with nonconfluent pulmonary arteries and origin of the left pulmonary artery from a patent ductus arteriosus had their repairs facilitated using the branching pulmonary arterial portion of the PH. There were no hospital or posthospital deaths. Postrepair right ventricular to left ventricular systolic pressure ratios were a mean of 0.35 at 18 hours postoperatively (range, 0.21-0.61). All patients were studied with Doppler and echocardiography after repair. The mean gradient across the PH was 9 mm Hg (range, 2-27 mm Hg), and no pulmonary valve incompetence was present. One patient (12.5%) required reoperation seven months after repair for conduit revision due to compression by the sternum and is now well.(ABSTRACT TRUNCATED AT 250 WORDS)

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