1. Paradoxic Heart Rate Deceleration during Exercise
Todd D. Miller, M.D., Raymond J. Gibbons, M.D. 
CHEST 
Volume 94, Issue 2, Pages (August 1988)
DOI: /chest
Copyright © 1988 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
A (upper). Twelve-lead ECG at the seventh minute of exercise. Heart rate is 97 beats/min, and 1 mm of horizontal ST segment depression is present in lead V6. B (lower). Electrocardiogram at the ninth minute of exercise. Heart rate is 78 beats/min, and the ST segment changes in V6 are less pronounced.
CHEST  , DOI: ( /chest )
Copyright © 1988 The American College of Chest Physicians Terms and Conditions

3. FIGURE 2
A (upper). Right coronary arteriogram, left anterior oblique view Focal 80 percent stenosis in the mid-right coronary artery distal to the sinoatrial branch. B (lower). Right coronary arteriogram following percutaneous transluminal coronary angioplasty. Stenosis has been reduced to 25 percent.
CHEST  , DOI: ( /chest )
Copyright © 1988 The American College of Chest Physicians Terms and Conditions