Echocardiographic Evaluation of Left Ventricular Performance in Normal Subjects.
10.4070/kcj.1981.11.1.103
- Author:
Yang Kyu PARK
;
Sang Oh HAN
;
Ock Kyu PARK
- Publication Type:Original Article
- MeSH:
Arterial Pressure;
Echocardiography*;
Heart Rate;
Vascular Resistance
- From:Korean Circulation Journal
1981;11(1):103-111
- CountryRepublic of Korea
- Language:Korean
-
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.
