Left ventricular and biventricular extracardiac conduits.

The insertion of an extracardiac conduit from the right ventricle has gained extensive success during the past decade. This report concerns the application of such a conduit from the left ventricle. Its use in four types of anomalies is described: (1) left ventricular outflow hypoplasia, (2) transposition of the great arteries with ventricular inversion and associated pulmonary stenosis, (3) complex anomalies involving double-outlet right ventricle wherein construction of an intracardiac tunnel is not feasible, and (4) transposition of the great arteries with intact ventricular septum and severe pulmonary stenosis. The correction of the last two mentioned anomalies involves the insertion of two parallel conduits, one from each ventricle to its appropriate great artery. The transposition anomaly may alternatively be corrected by combined Mustard repair and a left ventricle-to-pulmonary artery extracardiac conduit.