Growth and function of the right ventricular outflow tract after Fontan's procedure for tricuspid atresia: a two-dimensional echocardiographic study.

Two patients with classical tricuspid valve atresia were studied by two-dimensional echocardiography before and up to 6 years after Fontan's correction. Preoperative investigation revealed a diminutive right ventricular outflow chamber, which increased in size postoperatively and became functional. These data were compared to those obtained in normal individuals.