In the years 1981-1989 in the Department of Cardiosurgery, Institute of Cardiology, Medical Academy in Lódź, 39 patients with Fallot's syndrome were subjected to radical correction of the congenital heart disease. In 18 cases the correction was preceded by a palliative operation carried out on the average four years before the radical correction of the congenital heart disease. During the early postoperative period seven patients died which accounted for 17%. Out of 39 patients treated surgically, 32 were in I or II haemodynamic grade according to NYHA.