Abstract
Prior to 1970, 35 patients of VSD with Pp/Ps of 0.8 or more were subjected to primary closure of the defect, resulting in 11 operative deaths. Since 1971, however, the surgical results have been much improved and 29 such patients were operated on without death. It has been considered the optimal time of elective closure of VSD with severe pulmonary hypertension is at the age of 1 to 3 years, however, if decrease in apical diastolic rumble and heart size are found, earlier operation less than one year of age is to be scheduled. Surgical indications and results of PDA, PDA with VSD, and ASD associated with severe pulmonary hypertension were also discussed.
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