RAUL E. FALICOV, M.D.; WILLIAM FOX, M.D.
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To the editor: With reference to the valuable paper by Dhingra and colleagues (Ann Intern Med 81:302-306, 1974), we wish to ask three questions, which we believe are pertinent, and offer some comments:
1. Was idiopathic hypertrophic subaortic stenosis excluded in those patients with unexplained syncope? The clinical presentation of idiopathic hypertrophic subaortic stenosis may be one of recurrent syncopal episodes with or without angina pectoris, and the classical signs may be subtle, intermittent, or absent, especially in the presence of intermittent obstruction to the left ventricular outflow. Echocardiography and left heart catheterization and angiography are on occasion the only
FALICOV RE, FOX W. Syncope and Heart Block. Ann Intern Med. 1975;82:430–431. doi: 10.7326/0003-4819-82-3-430
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Published: Ann Intern Med. 1975;82(3):430-431.
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