Percutaneous Balloon Valvuloplasty in Newborn with Critical Pulmonary Stenosis: Report of Two Cases

Percutaneous balloon angioplasty was performed in two neonates with critical pulmonary stenosis with intact ventricular septum aged 5 and 7 days. Because of technical insufficiency, only coronary angioplasty balloons with maximum diameter of 4 mm were used in each patient. The gradients were only reduced by 30 and 40 mm Hg, respectively; however, elinical cyanosis of the patients ameliorated, prostaglandin infusion could be discontinued and urgent surgery was no longer needed. After 2.5 months, the angioplasty was repeated in one patient. Both patients are still in good elinical condition.