Key result
Left ventricular regional contribution to total stroke volume correlated significantly with end-diastolic regional shape index in normal subjects (r=0.87), MR (r=0.79), and AR (r=0.90).
Population
32 subjects total: 14 normal subjects, 8 patients with compensated chronic mitral regurgitation, and 10…
Design
Cross-sectional
Authors
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Regional shape may dictate stroke volume sites in AR versus MR; leaves open whether geometry-targeted strategies alter outcomes.
Observational (n=32)
Effect estimate: r = 0.87 (N), r = 0.79 (MR), r = 0.90 (AR)
Stroke volume is generated mainly in the mid-ventricular portion in normal subjects and patients with mitral regurgitation, but in the basal portion in aortic regurgitation due to characteristic changes in cavity shape.
Hiro et al. (1996) conducted an observational in Mitral or Aortic Regurgitation (n=32). Left ventricular cineangiogram analysis vs. Normal subjects vs Mitral Regurgitation vs Aortic Regurgitation was evaluated on Correlation between regional contribution to total stroke volume and end-diastolic regional shape index (r = 0.87 (N), r = 0.79 (MR), r = 0.90 (AR)). Left ventricular regional contribution to total stroke volume correlated significantly with end-diastolic regional shape index in normal subjects (r=0.87), MR (r=0.79), and AR (r=0.90).
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