Abstract
A technique for conversion of an intra-atrial baffle repair to an extracardiac repair is described for complex unroofed coronary sinus syndrome (including a complete atrioventricular septal defect) with connection of the left superior caval vein to the roof of the left-sided atrium. The left superior caval vein was divided distally and anastomosed to the right superior caval vein in an end-to-side fashion. In addition, the baffle in the left-sided atrium connecting the pulmonary veins with the left atrioventricular valve orifice was removed and the atria were septated. This extracardiac repair technique avoids the various disadvantages of the intra-atrial baffle technique such as creation of a small left atrium with low compliance.
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