5%), and 2 valvular and subvalvular PS (1.79%) (Table 1). BPV was performed on 8 supravalvular valvular PS patients who showed combined valvular PS on catheterization. The mean pressure gradient measured on pre-BPV echocardiogram between RV-PA was 38.76 mmHg (± 16.91 mmHg), ranging from 11 mmHg to 108 mmHg, and the median was 37 mmHg. The mean pressure gradient measured on echocardiogram within 24 Inhibitors,research,lifescience,medical hours post-BPV

was 21.33 mmHg (± 42.09 mmHg), ranging from 0 mmHg to 73.5 mmHg, and the median was 17.8 mmHg. The mean pressure difference between the pre-BPV and post-BPV was 17.02 mmHg (± 14.39 mmHg), ranging from 0 mmHg to 83 mmHg. The echocardiographic data of pre-BPV RV-PA systolic pressure gradient, 24 hour post-BPV RV-PA systolic pressure gradient, 1 week post-BPV, and 3 months post-BPV was also analyzed (Fig. 1). Fig. 1 The echocardiographic RV-PA systolic pressure gradient during follow-up. Pre-BPV RV-PA systolic pressure gradient (pre), 1 day following (post) after BPV, 1 week follow-up (1 week), 3 month follow-up (3 month). Note significant reduction (p < Inhibitors,research,lifescience,medical ... This figure shows the statistical Inhibitors,research,lifescience,medical analysis of mean, maximum and minimum results and degree

of distribution of variables, indicating the statistical significance of each variables. The pre-BPV RV-PA systolic pressure gradient and post-BPV systolic pressure gradient showed statistically significant decrease, but the difference of 24 hour post-BPV systolic pressure gradient and 1 week post-BPV systolic pressure gradient was not statistically significant. However, the pre-BPV RV-PA systolic pressure Inhibitors,research,lifescience,medical gradient and 3 month post-BPV systolic pressure gradient showed statistically significant decrease. On follow-ups, there were 87 patients (77.7%) among 112 patients whose pressure gradient declined over 20 mmHg because of

successful procedure, and 25 patients (22.3%) had pressure gradient over 20 mmHg without any symptoms, so the additional procedure was required. This shows that selleck echocardiography measuring the RV-PA systolic pressure gradient should be regularly followed-up, since the RV-PA systolic pressure gradient shows gradual decrease after the procedure, and L-NAME HCl the success Inhibitors,research,lifescience,medical of the procedure should be determined after at least 3 months, which shows statistically significant decrease in our data. Hemodynamic data The mean RV-PA pressure gradient on cardiac catheterization before BPV was 39.11 mmHg (± 16.99 mmHg), the range was between 15 mmHg to 110 mmHg, and the median was 35 mmHg. The mean RV-PA pressure gradient on cardiac catheterization after BPV was 14.14 mmHg (± 14.14 mmHg), the range was between 0 mmHg to 60 mmHg, and the median was 10 mmHg. The mean pressure difference on cardiac catheterization before and after BPV was 24.75 mmHg (± 34.77 mmHg), the range was between 2 mmHg to 80 mmHg, and the median was 20 mmHg. The mean pulmonary valve annulus size was 13.93 mm (± 4.94 mm), the range was between 6.5 mm to 31 mm, and the median was 13 mm.