Abstract
Background: Isolated pulmonary valve stenosis (PS) makes up 6-9% of all congenital heart defects among children. The initial gold standard for diagnosis, follow-up of PS is by echocardiography. However, the most accurate diagnosis still remains to be measurement of the pressure gradient through transcatheterization. The purpose of this study is to compare the difference between the echocardiographic data to the cardiac catheterization data on the diagnosis, treatment, and follow-up in patients diagnosed as PS, and to see what parameters should be closely monitored. Methods: A total of 112 patients (Male : Female = 46 : 66) who underwent balloon pulmonary valvuloplasty (BPV) at Severance Cardiovascular Hospital, between December, 2002 to August, 2012 were retrospectively analyzed. The patients were all under 16 years of age and critical PS patients who underwent BPV were excluded from this study. Results: The pre-BPV right ventricle (RV)-pulmonary artery (PA) systolic pressure gradient and post-BPV systolic pressure gradient showed statistically significant decrease. The pre-BPV RV-PA systolic pressure gradient and 3 month post-BPV systolic pressure gradient showed statistically significant decrease. The consistency between the echocardiographic data and cardiac catheterization data shows statistically significant consistency. The mean pressure gradient and systolic pressure gradient on the echocardiography shows high consistency when comparing with the cardiac catheterization data. Conclusion: Our study shows that BPV in PS is a safe and effective procedure in children and adolescent. The standard echocardiographic evaluation of PS, during diagnosis and follow-up, should include mean transpulmonic pressure gradient, as well as the peak systolic pressure gradient. The success of the procedure should be held off until at least 3 months, only if the patients do not show any symptoms.
