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AMA Arch Surg. 1952;65(5):794. doi:10.1001/archsurg.1952.01260020786020.
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In the article by Drs. dePeyster, Paul, and Gilchrist on "Risk of Urgent Surgery in Presence of Myocardial Infarction and Angina Pectoris," page 448 of the September issue, the following changes should be made: The two items under I. Anterior Myocardial Infarction (a) in the outline on page 449 should read: "1. Q wave 0.04 second or more in duration in any lead from VI through V6 in absence of right ventricular hypertrophy or right bundle branch block. 2. Q-S complex in any precordial lead to the left of the transition zone." The second item under I. Anterior Myocardial Infarction (b) should read: "2. History of chest pain with serial changes in the left precordial leads without significant Q waves but with change of one or more T waves from upright to inversion of at least 2 mm. lasting over 48 hours associated with fever and/or elevated sedimentation rate and/or


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