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Various operative treatments for ventricular septal defect below the age of 2 years accompanied by pulmonary hypertension were compared with reference to the operative results, PA and Rp/Rs.Although it is ideal to carry out a primary repair before pulmonary vascular changes advance, pulmonary artery banding should be performed as soon as possible if primary repair is impossible to prevent the progress of further pulmonary vascular changes.In some cases with a PA of 70mmHg and an Rp/Rs around 0.5, despite adequate primary repair, postoperative persistence of pulmonary vascular change was inferred.A rise of PA and Rp/Rs appeared to be significant as the index of progressive pulmonary lesions.

Results of Surgical Treatment of Ventricular Septal Defect Associated with Pulmonary Hypertension under the Age of Two