Résumé : Between 1962 and 1977, 150 patients suffering from tetralogy of Fallot, aged 4 months to 42 years, were surgically corrected. The postoperative fatality rate was 8.7 percent (13/150); it was 33 percent (5/15) in the adults and nil (0/10) in children below two years of age. For the last 100 cases treated between 1969 and 1977, the fatality rate dropped to 1 percent. In recent years, the age for primary total correction has been gradually lowered. This had no negative influence on the fatality rate as 10 children younger than two years were operated upon and no deaths occurred. Except for children younger than three months, reasonable arguments are in favor of performing primary corrective procedure in selected cases requiring early surgery.