Stepwise inoue balloon catheter valvuloplasty for congenital aortic valve stenosis: Comparison with standard balloon catheter technique

Experience with stepwise balloon dilatation of congenital aortic valve stenosis using the new Inoue balloon catheter in 16 patients (aged 12 ±4.6 years; group II) is presented. Results are compared with those obtained in 15 patients (10±6 years; group I) in whom standard balloon catheters were used. The procedure resulted in a similar transvalvar gradient reduction in both groups (83±25 to 34±14 mmHg in group I versus 84±21 to 28±10 mmHg in group II). Significant aortic incompetence occurred in three patients from group I and in four from group II. There was no difference in the average increase in AR grade between the groups. At follow-up (group I, 24±13 months; group II, 7±3 months) there was no significant change in transaortic gradient or aortic incompetence. Balloon aortic valvuloplasty for congenital aortic stenosis carries a risk of aortic incompetence. Stepwise dilatation of the stenosis does not prevent this complication. The Inoue balloon catheter offers technical advantages.