Two patients (6y, 3m) with endocardial cushion defect (ECD) and tetralogy of Fallot,and a patient (9m) with ECD, outlet right ventricle and pulmonary hypertension underwent corrective surgery with endocardial cushion prosthesis. Right ventricular outflow tract was reconstructed with an outflow patch only, in all cases. A 3-month-old boy, whose preoperative status was stomy, requiring 3 times of plasmophoresis for sepsis, died of low cardiac output. Two others survived the operation. Endocardial cushion prosthesis is considered to be appli-cable in patients with ECD and conotruncal anomaly.
