Author + information
- Received February 1, 1983
- Revision received August 16, 1983
- Accepted September 20, 1983
- Published online March 1, 1984.
- J. Andrew C. Hopkirk, Squadron leader MRCP, RAF,
- Gregory S. Uhl, MD, FACCa,
- James R. Hickman Jr., COL. USAF, MC, FACC and
- Joseph Fischer, MS
- ↵aAddress for reprints: Gregory S. Uhl, MD, Cardiology Division Lovelace Medical Center, 5400 Gibson Blvd., S.E., Albuquerque, New Mexico 87108.
The exercise electrocardiograms of 255 asymptomatic men were analyzed for changes in R wave amplitude and ST segments. The results were correlated with findings at cardiac catheterization. There were 65 men with coronary artery disease and 190 normal subjects. R wave amplitude changes were evaluated in bipolar leads X, Y and Z. The predictive value of an abnormal ST segment response for detecting disease was only 29%. This value was improved to 42 % using R wave amplitude changes with a sensitivity of 28% and specificity of 87%
Exercise-induced R wave amplitude changes enhance the specificity of detecting coronary disease in asymptomatic men over ST segment criteria alone but the sensitivity is poor and the predictive value is not enhanced. Thus, these criteria are limited in adding to the diagnostic accuracy of stress testing.
This paper does not represent the views of the United States Air Force but is the sole responsibility of the authors
- Received February 1, 1983.
- Revision received August 16, 1983.
- Accepted September 20, 1983.
- American College of Cardiology Foundation