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Inputs into Coronary Care During 30 Years: A Cost Effectiveness Study

SAMUEL P. MARTIN, M.D.; MAGRUDER C. DONALDSON, M.D.; C. DAVID LONDON, M.D.; OSLER L. PETERSON, M.D.; and THEODORE COLTON, Sc.D.
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▸Requests for reprints should be addressed to Samuel P. Martin, M.D., Department of Community Medicine, School of Medicine, University of Pennsylvania, McIlhenny Basement/GA, 36th and Hamilton Walk, Philadelphia, PA 19174.


Ann Intern Med. 1974;81(3):289-293. doi:10.7326/0003-4819-81-3-289
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A retrospective study over a 30-year interval measured changing patterns of inputs into the care of patients hospitalized with myocardial infarction. There was a dramatic increase in frequency of chemical laboratory tests, roentgenograms, and bacteriological examinations. These quantities had both statistically significant linear and quadratic regression components, indicating an accelerated increase over time. There has been a linear increase in electrocardiograms, sedative medication, and days of oxygen therapy. With these changes in input, there have been no significant changes in the duration of hospitalization or in-hospital mortality.

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