Paradoxic Heart Rate Deceleration during Exercise

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Paradoxic Heart Rate Deceleration during Exercise Todd D. Miller, M.D., Raymond J. Gibbons, M.D. CHEST Volume 94, Issue 2, Pages 407-408 (August 1988) DOI: 10.1378/chest.94.2.407 Copyright © 1988 The American College of Chest Physicians Terms and Conditions

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 1988 94, 407-408DOI: (10.1378/chest.94.2.407) Copyright © 1988 The American College of Chest Physicians Terms and Conditions

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 1988 94, 407-408DOI: (10.1378/chest.94.2.407) Copyright © 1988 The American College of Chest Physicians Terms and Conditions