ALDEN S. GOOCH, M.D.; VLADIR MARANHÃO, M.D.
During treadmill exercise of a 43-year-old man an electrocardiographic change was noted that simulated a severe ventricular arrhythmia. This was a harmless effect of sinus tachycardia in a subject with left bundle-branch block. The summation of the upright T wave, U wave, and following P wave caused a high, wide reflection that resembled an additional QRS. The gradual evolution of this pattern is illustrated during walking and is further confirmed by carotid sinus massage after the exercise.
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GOOCH AS, MARANHÃO V. Exercise-Induced Pseudoarrhythmia. Ann Intern Med. 1971;75:435–436. doi: 10.7326/0003-4819-75-3-435
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Published: Ann Intern Med. 1971;75(3):435-436.
Cardiac Diagnosis and Imaging, Cardiology, Rhythm Disorders and Devices.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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