INDICES OF LEFT VENTRICULAR FUNCTION 441 Echocardiographic Indices of Left Ventricular Funci ion * A Comparison
نویسنده
چکیده
Multiple M-mode echocardiographic indices of left ventricular function are currently in use, but their reliability is disputed. Therefore, we correlated echo ejection fraction (EF) using quadratic (Q) and cubic (C) formulae, percentage of minor axis shortening (%S), mean velocity of circumferential fiber shortening (mVCF), and peak VCF with angiographic EF in 37 subjects, including 10 normal subjects. None had echocardiographic segmental wall motion abnormalities. Significant linear correlaflora were found between angiographic EF and EF0 (r 0.78), %S (r = 0.77), EFQ(r = 0.68), peak VCF (r 0.68),and mVCF (r= 0.58). However, for all indices, the scatter was too great to permit reliable quantitative esti-
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