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Kim, Rho, Kim, Hong, Kim, and Kim: Echocardiographic Measurement of Systolic Time Intervals in Normal Adults and the Patients with Dilated Cardiomyopathy
Original Article
Korean Circulation Journal

Korean Circulation Journal 1982; 12(2): 121-125.

Published online: 31 December 1982

DOI: https://doi.org/10.4070/kcj.1982.12.2.121

Echocardiographic Measurement of Systolic Time Intervals in Normal Adults and the Patients with Dilated Cardiomyopathy

Chong Sang Kim, M.D., Tai Ho Rho, M.D., Jae Hyung Kim, M.D., Sun Jo Hong, M.D., Sam Soo Kim, M.D., Hak Jung Kim, M.D.

Copyright © 1982 The Korean Society of Circulation

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The systolic time intervals were measured in 25 normal controls and 23 patients with dilated cardiomyopathy by simultaneous recording of the aortic valve echocardiogram and ECG. These values were compared to corresponding ones obtained from the method using simultaneously recorded phonocardiogram, ECG, and indirect carotid pulse tracings. And we assessed left ventricular function by systolic time intervals in dilated cardiomyopathy.
The results were as followings.
1) High degree of correlation(r≥0.94) was found between the two methods for each intervals, EMS, LVET, PEP, PEP/LVET.
2) In normal controls, PEP/LVET obtained from echocardiographic measurement was 0.31±0.02.
3) In the patients with dilated cardiomyopathy, PEP/LVET(0.59±0.13) was significantly higher(p<0.001), PEP index was longer(p<0.05), LVET index was shorter(p<0.05) than in normal controls.

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