Clinic Analysis Of Percutaneous Balloon Pulmonary Valvuloplasty For Pulmonary Stenosis In Merger With Subravalvular Pulmonary Stenosis And Supravalvular Pulmonary Stenosis In Children

Objective:To evaluate the clinical efficacy of percutaneous balloon pulmonary valvuloplasty(PBPV) for pulmonary stenosis(PS) in merger with subvalvular pulmonary stenosis (mild) and supravalvular pulmonary stenosis.Methods:A total of 45 patients of pulmonary stenosis in merger with subvalvular pulmonary stenosis (mild) and supravalvular pulmonary stenosis, who encountered in author’s hospital during past 10 years, were enrolled in this study. The diagnosis was conformed by clinical manifestations, ECQ X-ray, echocardiography. The size of valve ring, valvular area, the pulmonary valve differential pressure was confirmed before the PBPV. The balloon with the diameter being (20%-40%)bigger than the valve ring was confirmed. After the PBPV, the PA-RV (pulmonary artery-right ventricle) pressure was measured immediately. The pulmonary valve open, ECQ pulmonary valve and tricuspid valve regurgitation were checked.Results:45 case of pulmonary stenosis in merger with subvalvular pulmonary stenosis (mild) and supravalvular pulmonary stenosis,42 cases of intervention is successful, the success rate was 93.333%. In the pulmonary stenosis in merger with subvalvular pulmonary stenosis (mild) and supravalvular pulmonary stenosis group, Preoperative and postoperative pulmonary valve differential pressure was statistically significant(P<0.05). In pulmonary stenosis in merger with subvalvular pulmonary stenosis (mild) and supravalvular pulmonary stenosis, Preoperative and postoperative pulmonary valve differential pressure was statistically significant(P<0.05).Conclusion:The blood flow velocity of right ventricular outflow tract is less than 3.810 m/s, PBPV surgery is the treatment of subvalvular pulmonary stenosis (mild). Percutaneous balloon pulmonary valvuloplasty is a safe and effective method for pulmonary stenosis with supravalvular pulmonary stenosis (the diameter of supravalvular pulmonary stenosis is greater than 5 mm). In pulmonary stenosis in merger with subvalvular pulmonary stenosis (mild) and supravalvular pulmonary stenosis, the effect of percutaneous balloon pulmonary valvuloplasty is very well for the well developed of pulmonary valve ring and mild-to-moderate dysphasia pulmonary valve ring.