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The Journal of Thoracic and Cardiovascular Surgery, Vol 80, 770-778, Copyright © 1980 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Early and late results of total correction of tetralogy of Fallot

E Arciniegas, ZQ Farooki, M Hakimi, BL Perry and EW Green

Two hundred and nine patients underwent total repair of tetralogy of Fallot without congenital pulmonary atresia from 1971 to 1979. The age of the patients ranged from 22 months to 27 years (mean 6.8 years). Previous palliative shunts were present in 130 patients (62.2%). The right ventricular outflow tract obstruction was relieved by infundibulectomy in 31 patients (14.8%), by transannular patching in 142 patients (67.9%), and by insertion of a right ventricular--to-- pulmonary artery prosthetic conduit in 10 patients (4.7%) with associated coronary artery anomalies. A porcine valve was inserted after transannular patching only in patients with undersized pulmonary arteries, unilateral pulmonary artery, or congenitally absent pulmonary valve. There were 10 early postoperative deaths (4.7%). Previous palliative shunts did not adversely affect early postoperative mortality rate. Surgically induced permanent complete heart block occurred in one patient (0.4%). Six patients (3%) died in the late postoperative period, three of them of unrelated causes. Late results were good in 170 patients (87%), fair in 10 patients (5.1%), and poor in 15 patients (7.6%). Poor results were due to residual stenosis at the origin of the pulmonary arteries in 13 patients (6.5%) and to residual ventricular septal defect in two patients (1%). The mean cardiothoracic ratio was 0.61 for patients with poor results and 0.54 for the entire group. Pulmonary valvular insufficiency was well tolerated postoperatively in the absence of distal pulmonary artery obstruction. This experience supports a policy of aggressive relief of the right ventricular outflow tract obstruction including liberal use of transannular patching and, when indicated, extensive reconstruction of the pulmonary artery branches. We also recommend a two-stage treatment program for symptomatic infants with unfavorable anatomy consisting of initial Blalock-Taussig shunt followed by total repair at about 3 years of age.

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