Bidirectional Inferior Cavopulmonary Anastomosis: Pre-Fontan Interim Palliation.

We report a novel method of constructing an extracardiac bidirectional inferior cavopulmonary anastomosis. Our patient was a 4-month-old girl with complex single-ventricle anatomy and a small-caliber superior vena cava. A direct anastomosis from the inferior vena cava to the main pulmonary artery was constructed by using all autologous tissue. The resulting pathway remained patent and exhibited growth with age. Furthermore, a pulmonary arteriovenous malformation did not develop. This case demonstrates how a bidirectional inferior cavopulmonary anastomosis is feasible in the human and can provide similar hemodynamic results as the bidirectional superior cavopulmonary anastomosis.