[ECG changes and their comparison with x-ray data in the late period after an operation for a secondary interatrial septal defect].

The authors report on 78 patients operated on for congenital defect of the heart -- the secondary atrial septal defect. The changes in the ECG and X-ray data were studied prior to and at late periods after the operation (from 6 months to 8 years); the age of patients was from 2 to 47 years. Regress of ECG signs of hypertrophy of the right ventricle was seen in 87.