[Percutaneous pulmonary valvuloplasty in adults].
Percutaneous balloon pulmonary valvuloplasty was performed in 6 adult patients (aged 21-59 years, mean age: 43 years) with congenital pulmonary valve stenosis and systolic pressure gradients of 50 to 120 mm Hg (mean: 78 mm Hg). In 5 patients the procedure was successful: mean systolic right ventricular pressure was reduced from 99 +/- 26 to 55 +/- 7 mm Hg and the trans-stenotic pressure gradient from 77 +/- 28 to 31 +/- 12 mm Hg. Valvuloplasty with a 20 mm balloon was not effective in a patient with a wide pulmonary anulus (diameter 25 mm). In 1 patient only, the balloon occlusion led to severe systemic hypotension with syncope. Short-term follow-up (3 months) demonstrated symptomatic improvement and persistent reduction of the pressure gradient in all successfully treated patients. In conclusion, percutaneous balloon pulmonary valvuloplasty appears to be an effective method with low risk of complications for the treatment of pulmonary valve stenosis in adults.