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Department of Anesthesiology, University of Florida College of Medicine and the Anesthesiology Service, Veterans Administration Medical Center, Gainesville, Florida, and from the Department of Anesthesia, University of California, San Francisco, California.
Abstract
The minimum alveolar concentration (MAC) of cyclopropane was determined in young (mean age, 32 yr; n = 16) and older (mean age, 81 yr; n = 12) surgical patients. Cyclopropane requirement was 23% lower in the elderly (P < 0.01). This reduction in anesthetic requirement with age is similar to that reported previously for halothane and isoflurane and supports the thesis of a general effect of age on anesthetic requirement.
Key Words: POTENCY, ANESTHETIC—age, cyclopropane AGE FACTORS—anesthetic potency ANESTHETICS, GASES—cyclopropane
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