• Masahiko Onaka and Hiromitsu Yamamoto.
• Department of Anesthesia, Shiroyama Hospital, Habikino 583-0852.
• Masui. 2006 Jul 1; 55 (7): 880-5.

BackgroundOccasionally emergence from anesthesia is delayed. We examined the factors which exert influence on the emergence time.MethodsThe emergence time was assessed in 1133 surgical patients who received balanced anesthesia. Balanced anesthesia was maintained with infusion of propofol, ketamine, vecuronium, and buprenorphine, with nitrous oxide. OT time was defined as the time from the end of operation to extubation, TA time from extubation to leaving the operation room, and these times were examined retrospectively.ResultsThe emergence time of OT was 3.9 +/- 2.6 min, and that of TA was 3.7 +/- 2.2 min, for all subjects who were extubated in the operating room. Factors affecting the emergence delay were ASA classification, JCS classification, ages, department of surgery, the time of anesthesia, and the anesthesiologists.ConclusionsWhen the anesthesiologists keep in mind early emergence and become accustomed to this balanced anesthesia, the emergence time will be shorter, and the extubated cases in the operating room will increase.

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