Abstract
We performed an arterial switch operation in a patient with double outlet right ventricle with non-committed ventricular septal defect, and abnormal insertion of the tension apparatus of the tricuspid valve which produced moderate tricuspid regurgitation. This required extensive enlargement of the ventricular septal defect between the attachments of the cords of the tricuspid valve so as to create the interventricular rerouting that made possible the arterial switch operation. Postoperatively, we produced a straight, unobstructed, left ventricular outflow tract, improved the extent of tricuspid regurgitation, and achieved low right atrial pressures. Enlargement of the interventricular communication can set the scene for biventricular repair in this particular subset of patients with both arterial trunks arising from the morphologically right ventricle.
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