• Masui · Jun 2007

    [Dose requirements of pentazocine during abdominal surgery in total intravenous anesthesia using propofol].

    • Akihiko Nonaka, Satomi Suzuki, Norimitsu Nagamine, Atsushi Furuya, and Fumiaki Abe.
    • Department of Anesthesia, Yamanashi Prefectural Central Hospital, Yamanashi.
    • Masui. 2007 Jun 1; 56 (6): 662-5.

    BackgroundTo determine the dose requirements of pentazocine when administered as a single bolus dose in total intravenous anesthesia with propofol for abdominal surgery.MethodsOne hundred and fifty-six patients scheduled for abdominal surgery were analyzed retrospectively. Patients were classified into three groups according to duration of the operation ; under 120 min (Group 1, n=87) ; 120-240 min (Group 2, n=56) ; over 240 min (Group 3, n=13). Anesthesia was induced with propofol using target controlled infusion method, and was maintained with propofol infusion, pentazocine as a single dose before incision, and intermittent administration of vecuronium with 40% oxygen in air.ResultsDosage of pentazocine was significantly increased according to length of the operation. The maintenance doses of propofol were not different among the three groups. Awakening time in about 80% of patients in each group was within 15 minutes. There are no severe complications.ConclusionsTotal intravenous anesthesia with propofol and pentazocine is useful to stabilize hemodynamics and to achieve rapid recovery. For the operation within 120 min, 0.7 mg x kg(-1) of pentazocine is necessary whereas 0.8 mg x kg(-1) of pentazocine is needed in the operation of 120-240 min.

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