Late Results of Total Correction for Tetralogy of Fallot

Lee, Yuen Je; Hwang, Sang Won; Kim, Han Yong; Yoo, Byung Ha

Abstract

Tetralogy of Fallot is the most common cyanotic congenital cardiac malformation. Between April 1984 and December 1993, we experinced with 39 cases of total correction for the tetralogy of Fallot at the department of Thoracic and Cardiovascular Surgery, Masan Samsung General Hospital. The results were as follows; There were 14 males and 25 females, and their ages ranged from 2 to 36 years, with an average age of 13.33+/-7.40 years. There was type I VSD in 10 cases(25.6%), type II VSD in 19 cases(48.8%) and type I+II VSD in 10 cases(25.6%). Types of right ventricular outflow tract obstruction were valvar + infundibular stenosis in 19 cases(48.7%), valvar + infundibular + annular stenosis in 10 cases(25.6%), infundibular stenosis in 9 cases(23.1%)and pure valvar stenosis in 1 case(2.6%). Right ventricular outflow tract patch widening was necessary in 33 cases(84.6%) and a transannular patch including 2 cases of Monocusp-bearing outflow patch was used in 10 cases. In 36 hospital survivors, 23 patients were evaluated by 2 dimensional and doppler echocardiography. The most common complication was arrthymia, especially complete right bundle branch block, in 30 cases (76.9%). The operative mortality was 7.7%, and the cause of death was low cardiac output syndrome.