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Anesthesia and analgesia · Oct 1987
Comparative StudyRates of awakening from anesthesia with I-653, halothane, isoflurane, and sevoflurane: a test of the effect of anesthetic concentration and duration in rats.
- E I Eger and B H Johnson.
- Anesth. Analg. 1987 Oct 1; 66 (10): 977-82.
AbstractThe low blood solubility of two new inhaled anesthetics, I-653 (human blood/gas partition coefficient, 0.42) and sevoflurane (0.69), suggested that awakening from these agents should be more rapid than awakening from currently available anesthetics such as isoflurane (1.4) and halothane (2.5). This prediction proved valid in a study of these four agents in rats given 0.4, 0.8, 1.2, or 1.6 MAC for 2.0 hr or 1.6 MAC for 0.5 or 1.0 hr. At a given dose and duration, awakening was most rapid with the least soluble agent and longest with the most soluble agent. For example, recovery of muscle coordination at 1.2 MAC administered for 2 hr required 4.7 +/- 3.0 min (mean +/- SD) with I-653, 14.2 +/- 8.1 min with sevoflurane, 23.2 +/- 7.6 min with isoflurane, and 47.2 +/- 4.7 min with halothane.
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