Echocardiographic assessment of mitral valve morphology after Percutaneous Transvenous Mitral Commissurotomy (PTMC)

被引：9

作者：

Hasan-Ali H. ^{[1
]}

Shams-Eddin H. ^{[1
]}

Abd-Elsayed A.A. ^{[2
]}

Maghraby M.H. ^{[3
]}

机构：

[1] Department of Cardiovascular Medicine, Assiut University Hospitals, Assiut

[2] Department of Public Health and Biostatistics, Faculty of Medicine, Assiut University, Assiut

[3] Department of Internal Medicine, Assiut University Hospitals, Assiut

来源：

Cardiovascular Ultrasound | / 5卷 / 1期

关键词：

Mitral Valve; Papillary Muscle; Mitral Stenosis; Rheumatic Heart Disease; Mitral Valve Area;

D O I：

10.1186/1476-7120-5-48

中图分类号：

学科分类号：

摘要：

Aims. PTMC produces significant changes in mitral valve morphology as improvement in leaflets mobility. The determinants of such improvement have not been assessed before. Methods and results. The study included 291 symptomatic patients with mitral stenosis undergoing PTMC. Post-PTMC subvalvular splitting area was a determinant of post-PTMC excursion in both the anterior (B 0.16, 95% CI 0.03 to 0.30, p < 0.05) and the posterior (B 0.12, 95% CI 0.01 to 0.24, p < 0.05) leaflets. Another determinant was the post-PTMC transmitral pressure gradient for anterior (B -0.02, 95% CI -0.04 to -0.005, p < 0.01) and posterior (B -0.01, 95% CI -0.04 to -0.005, p < 0.05) leaflets excursion. The relationship between post-PTMC MVA and leaflet excursion was non-linear "S curve". There was a steep increase of both anterior (p, 0.02) and posterior (p, 0.03) leaflets excursion with increased MVA till the MVA reached a value of about 1.5 cm2; after which both linear and S curves became nearly parallel. Conclusion. The improvement in leaflets excursion after PTMC is determined by several morphologic and hemodynamic changes produced in the valve. The increase in MVA improves mobility within limit; after which any further increase in MVA is not associated by a significant improvement in mobility in both leaflets. © 2007 Hasan-Ali et al; licensee BioMed Central Ltd.

引用

共 21 条

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