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Figure 2 Right ventricular-aorta systolic pressure ratio before and immediately after RF valvotomy and balloon dilation, and during subsequent cardiac catheterization in 19 patients from group 1. One patient was in critical condition at the beginning of the procedure and the initial RV pressure was not available (triangles). Patients with subvalvar stenosis (squares). Patients who underwent repeat balloon dilation (circles). Transvalvar Doppler gradient dropped to < 25 mm Hg at 10 weeks of follow-up (plus signs).
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