[Percutaneous transluminal valvuloplasty in severe neonatal pulmonary stenosis]

The authors made diagnosis of valvar pulmonary stenosis in a 1-day old neonate. The severe stenosis was treated by means of pulmonary balloon valvuloplasty at the age of 4 days. The initial suprasystemic pressure in the right ventricle decreased to normal after the procedure. Transluminal balloon valvuloplasty is an effective therapeutic method for severe and critical valvar pulmonary stenosis and casually may serve as an alternative of surgical treatment. This case was the first successful procedure of pulmonary balloon valvuloplasty in Hungary at neonatal age.