We report balloon pulmonary valvuloplasty using the Inoue catheter in three patients with severe valvular pulmonic stenosis. The mean right ventricular systolic pressure and the pulmonary valvular peak to peak systolic gradients decreased from 140 +/- 23 to 40 +/- 26 mmHg (P < 0.001) and 120 +/- 26 to 8 +/- 8 mmHg (P < 0.001) respectively. This report suggests that pulmonary valvuloplasty using the Inoue balloon catheter technique is feasible, safe and effective.