TOBY R. ENGEL, M.D.; CHARLES A. BUSH, M.D.; STEPHEN F. SCHAAL, M.D.
A woman with chronic sinoatrial tachycardia developed ventricular dysfunction 9 years after the onset of the tachycardia. Her history suggests that the myocardial contractile alterations may be a result rather than a cause of tachycardia. The cause of the tachycardia was not defined despite unique responses to electrophysiologic tests. Despite severely altered ventricular function, beta-adrenergic blockade markedly improved symptoms and hemodynamics.
ENGEL TR, BUSH CA, SCHAAL SF. Tachycardia-Aggravated Heart Disease. Ann Intern Med. 1974;80:384–388. doi: 10.7326/0003-4819-80-3-384
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Published: Ann Intern Med. 1974;80(3):384-388.
Cardiology, Rhythm Disorders and Devices.
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