Role of Balloon Pulmonary Valvuloplasty in the Management of Pulmonary Stenosis
Although there is definitive evidence for pressure gradient relief both immediately after and at follow-up after balloon pulmonary valvuloplasty (BPV) for pulmonary stenosis (PS), the progression of pulmonary insufficiency (PI) at late follow up emerged as a concern. To address the concern for development of PI during late follow-up, balloon/annuls ratio used for BPV was reduced to 1.2 to 1.25. Recurrence of stenosis was seen in nearly 10% of patients. The causes of recurrence were identified to be balloon/annulus ratio less than 1.2 and immediate post-BPV gradients in excess of 30 mmHg. Recurrent obstructions can be effectively relieved by repeat BPV. The BPV procedure is safe and effective in fetal, neonatal and adult subjects as well. The BPV is also effective in palliating cyanotic congenital heart disease patients with valvar PS. Despite the limitations, BPV is currently considered as therapeutic procedure of choice in the management of congenital PS in both the pediatric and adult populations. BPV provides an excellent alternative to surgical intervention and has become the preferred intervention for initial treatment for PS in neonates, infants, children, adolescents, and adults. Careful follow-up to detect development of significant PI and investigate methods to prevent PI are recommended.