Korean Circ J.  1985 Jun;15(2):203-208. 10.4070/kcj.1985.15.2.203.

Evaluation of R Wave Amplitude Changes on Treadmill Exercise Testing

• Ahn BS
• Kim TJ
• Na H
• Suh KW
• Kim SG
• Kwon YJ

• KMID: 2229609
• DOI: http://doi.org/10.4070/kcj.1985.15.2.203

Abstract

For the evaluation of exercise induced R wave amplitude changes in lead V5 (big up tri, openR) and multiple leads(summation operatorR), 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.

MeSH Terms

Exercise Test*
Humans
Myocardial Ischemia