Key result
Ischemic MR was associated with a more dilated and flattened mitral annulus compared to controls, with greater deformity in anterior MI (height 1.7±1.5 mm) than inferior MI (3.5±1.6 mm; P<0.05).
Why the study?
What are the geometric differences in the mitral annulus between patients with ischemic MR due to inferior versus anterior MI?
Population
33 subjects, comprising 23 patients with ischemic mitral regurgitation attributable to inferior or anterior…
Comparison
Real-time 3-dimensional echocardiography with… vs Controls without ischemic MR
Design
Cross-sectional
Authors
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Annular differences by MI location support targeted research; should not change practice without prospective validation.
Observational (n=33)
What are the geometric differences in the mitral annulus between patients with ischemic MR due to inferior versus anterior MI?
Real-time 3D echocardiography demonstrates that the mitral annulus flattens in ischemic MR, with significantly greater deformity in anterior MI compared to inferior MI.
Watanabe et al. (2005) conducted an observational in Ischemic mitral regurgitation (n=33). Anterior MI vs Inferior MI vs. Controls was evaluated on Mitral annulus circumference, area, and height. Ischemic MR was associated with a more dilated and flattened mitral annulus compared to controls, with greater deformity in anterior MI (height 1.7±1.5 mm) than inferior MI (3.5±1.6 mm; P<0.05).
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