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Creation or enlargement of a ventricular septal defect is indicated in rare clinical situations. In the setting of double-outlet right ventricle requiring single-ventricle palliation, left ventricular outflow tract obstruction caused by progressive restriction at the ventricular septal defect poses an uncommon but recognized dilemma. In this situation surgical ventricular septal defect enlargement may be desirable but risks damage to the atrioventricular valve or conduction system. We report the results of a novel technique for transcatheter creation or enlargement of ventricular septal defects as an alternative to reoperation when decompression of an isolated ventricle is indicated.

Transcatheter creation and enlargement of ventricular septal defects for relief of ventricular hypertension