Pulmonary artery conduits in infants younger than six months of age.

Ten infants under 6 months of age with right ventricular-pulmonary artery discontinuity have undergone reparative operations. Five infants had either Type I or Type II truncus and 5 had pulmonary atersia with some discontinuity between right and left pulmonary arteries. There have been 4 survivors in each group. The one death in each category was due to pulmonary hypertension. The remaining 8 patients have low pulmonary vascular resistance. The survival rate after the reparative technique in infancy appears better than that with other forms of palliative treatment, such as banding of shunts, in these severly ill patients.