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Dipyridamole-Thallium Scanning in Patients Undergoing Vascular Surgery
Bruce Kleinman, MD;
Theodore C. Smith, MD
Loyola University Medical Center Maywood, Ill
JAMA. 1987;258(9):1171.
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To the Editor.—
We found the study by Eagle et al1 using dipyridamole-thallium scanning to evaluate cardiac preoperative risk particularly relevant to our field of endeavor—anesthesiology. However, for those interested in the historical development of a risk index for preoperative patients, we would like to correct three points about the "risk classification developed by the Dripps—American Surgical Association." First, it is not a risk classification at all. Second, it was not developed by Dr Dripps. Third, it had nothing to do with the American Surgical Association.
A classification of preoperative health or physical status was proposed under the auspices of the American Society of Anesthesiologists, not the American Surgical Association, in 1941 by Drs Saklad,2 Rovenstine, and Taylor. This classification was not then nor is it now a classification of risk. Its purpose was to facilitate the tabulation of statistical data in anesthesia. It was hoped that classifying patients
. . . [Full Text PDF of this Article]
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