[Reconstruction of right ventricular outflow tract using transannular patch in 52 children with tetralogy of Fallot]

52 children with tetralogy of Fallot received reconstruction of right ventricular outflow tract (RVOT) by using transannular patch. The indications for using transannular patch to reconstruct RVOT, patch materials, and the standard of enlargement pulmonary annulus were studied. The indications were held correctly for reconstruction of RVOT with transannular patch. The autologous pericardium was the most acceptable material for patch. All patients showed no obstruction of RVOT during early and late postoperative follow-up, althought most of them had certain degree of pulmonary regurgitation (PR) in first postoperative year, whicli was gradually attenuated as their life time long-drawn, with better exertion tolerance.