Journal List > Korean Circ J > v.11(1) > 1072020

Park, Han, and Park: Echocardiographic Evaluation of Left Ventricular Performance in Normal Subjects

Abstract

Parameters of the left ventricular performance were evaluated by echocardiographic examination in 66 normal subjects.
Effects of pulse rate, systemic arterial pressure, peripheral resistance and left ventricular end-diastolic dimension on the parameters were also observed.
Normal value(mean±SD) of fractional shortening was 34.0±5.2%, ejection fraction 0.71±0.07, mean rate of circumferential fiber shortening 1.15±0.19 circ/sec, mean posterior wall velocity 4.05±0.70cm/sec, maximal posterior wall velocity 6.31±1.26cm/sec, mean normalized posterior wall velocity 0.82±0.14/sec, and maximal normalized posterior wall velocity 1.28±0.24/sec.
There were negative correlations of peripheral resistance to fractional shortening, ejection fraction and mean rate of circumferential fiber shortening. Pulse rate and left ventricular end-diastolic dimension did not have significant effects on these parameters.
Mean and maximal posterior wall velocity had negative correlations to peripheral resistance and positive correlations to left ventricular end-diastolic dimension. But mean and maximal normalized posterior wall velocity had no correlations to any of them.

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