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Ahn, Kim, Na, Suh, Kim, and Kwon: Evaluation of R Wave Amplitude Changes on Treadmill Exercise Testing
Original Article
Korean Circulation Journal

Korean Circulation Journal 1985; 15(2): 203-208.

Published online: 30 June 1985

DOI: https://doi.org/10.4070/kcj.1985.15.2.203

Evaluation of R Wave Amplitude Changes on Treadmill Exercise Testing

Byung Soo Ahn, M.D., Tae Joon Kim, M.D., Hyun Na, M.D., Kook Won Suh, M.D., Sung Gu Kim, M.D., Young Joo Kwon, M.D.

Copyright © 1985 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

For the evaluation of exercise induced R wave amplitude changes in lead V5 (△R) and multiple leads(∑R), we studied 20 normal subjects and 21 ischemic heart disease patients with positive exercise test. All underwent submaximal, multiple leads multistage treadmill exercise testing.
14 to 20 normal subjects(70%) there were decreased R wave amplitude in multiple leads on treadmill exercise testing. 16 of 21 patients(76%) there were increased R wave amplitude on treadmill exercise testing. In normal group, R wave amplitude between rest and exercise was significantly decreased in lead V5 and multiple leads. In patients grous, R wave amplitude between rest and exercise was significantly increased in lead V5 and multiple leads.
It is suggested exercise induced R wave amplitude changes probably enhance the diagnostic reliability by ST segment changes on treadmill exercise testing.

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