This paper presents results of retrospectsve study on the fate of 89 survivors of cardiovascular surgery in neonate performed over the last 8 years before July 1985. In the group of 34 survivors of definitive operations(5 open-heart and 29 non-open-heart cases), 5 infants died in the first postoperative year and none after the second postoperative year. Factors relating to late death were pulmonary venous obstruction in TAPVR, combined congenital airway anomaly in PDA and bronchopulmonary dysplasia in PDA in very low birth weight infant. Actuarial survival rate at one-year was 83.3% and was 85.4% after 2-year in this group. In the group of 55 survivors of palliative operations(17 cases with CoA・IAA complex, 11 with TGA, 9 with pure pulmonary atresia(PPA), 5 with TA, 8 with PA and VSD and 5 others), late death occured in 11 cases which were mainly related to the presence of congenital anomaly of other organs(especially of airway), asplenia syndrome and to later definitive open-heart operation. Actuarial survival rate was 85.5% is one-year, 83.3% in 2-years, 81.3% in 3-years, and 77.8% after 4-years in this group. During infancy, body weight of majority of long-term survivors was below 3-percentile in the standard body weigt curve for Japanese normal children, but they showed rapid catch up growth after 1 year and by 3 years average body weight of patients exceeded 25-percentile level except for groups of patients with PDA in very low birth weight infant, PPA and shunts for cyanotic heart disease. In those 3 groups, average body weight exceeded 10-percentile level by 3 years of age.
