[Surgical closure of interventricular communications before 2 years of age. Long-term clinical and electrocardiographic course].

The long-term follow-up of the first 100 children under 2 years of age, presenting with ventricular septal defect (VSD) who underwent surgical closure between 1972 and 1976 at the Centre Chirurgical Marie-Lannelongue, was studied. Only cases with isolated VSD were taken into account except for 18 cases with ductus arteriosus related to operation and 41 cases with atrial septal defect (ASD) or persistent foramen ovale. This study included clinical and electrocardiographic investigations focused on the long-term follow-up of conduction disorders. Clinical tolerance was excellent with only one Eisenmenger's syndrome induced by a residual VSD. Three secondary cases of aortic regurgitation without present functional repercussions were observed. Conduction disorders were considered as unchanged or even improved. There were no sudden death, no secondary atrioventricular block (AVB), no trifascicular block even after one case with transitory immediate postoperative AVB.