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- W2085183898 abstract "Percutaneous mitral balloon valvuloplasty (PMBV) has been useful in decreasing mitral valve obstruction in mitral stenosis; however, the long-term effects of valvuloplasty on pulmonary artery pressure have not been extensively studied. Thirty-three patients underwent PMBV in our institution between January 1988 and December 1991. There were significant reductions in peak (19 +/- 1 to 12 +/- 1 mm Hg) and mean (10 +/- 0.7 to 6 +/- 0.4 mm Hg) mitral valve gradients estimated by Doppler techniques immediately after PMBV. The mitral valve area, as assessed by the pressure half-time method, increased from 1.06 +/- 0.05 to 1.98 +/- 0.08 cm2 (p < 0.001) after the procedure and remained significantly greater (1.68 +/- 0.11 cm2) at 17 +/- 2 months. Right ventricular systolic pressure (RVSP) was estimated in patients with tricuspid regurgitation (TR) using the modified Bernoulli equation. There was a good correlation between Doppler and catheterization for RVSP (r = 0.83 pre valvuloplasty; r = 0.87 post valvuloplasty). Right ventricular systolic pressure by Doppler was 56 +/- 4 mm Hg before valvuloplasty and 48 +/- 4 mm Hg immediately afterwards (p < 0.001). Nine patients had TR on follow-up Doppler studies with an estimated RVSP of 53 +/- 9 mm Hg (p = NS compared with pre- and post-valvuloplasty values). Six of these nine patients had moderate or severe mitral regurgitation (MR), compared with one patient without TR at follow-up (p < 0.05). There appears to be a good correlation between the RVSP determined by Doppler and measured at catheterization.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
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- W2085183898 date "1993-05-01" @default.
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- W2085183898 title "Effect of percutaneous balloon valvuloplasty on pulmonary hypertension in mitral stenosis" @default.
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- W2085183898 doi "https://doi.org/10.1016/0002-8703(93)91010-c" @default.
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