• Clinical therapeutics · Nov 1992

    Randomized Controlled Trial Multicenter Study Clinical Trial

    Reversal of central nervous system effects by flumazenil after intravenous conscious sedation with midazolam: report of a multicenter clinical study. The Flumazenil in Intravenous Conscious Sedation with Midazolam Multicenter Study Group I.

    • Clin Ther. 1992 Nov 1; 14 (6): 861-77.

    AbstractFlumazenil, a benzodiazepine antagonist, reverses the residual central nervous system effects of benzodiazepines. In this US double-blind, multicenter study, the efficacy of flumazenil was compared with that of placebo in antagonizing the effects of midazolam, a benzodiazepine used to induce intravenous conscious sedation. The mean dose of flumazenil was 0.7 mg, administered intravenously. At 5 minutes posttreatment, 82% of 131 flumazenil-treated patients, compared with 15% of 65 placebo-treated patients, demonstrated complete reversal of sedation. In 85% of patients who responded to flumazenil, this reversal of sedation was maintained throughout the 180-minute observation period. Psychomotor performance returned to prestudy levels 5 minutes posttreatment in 87% of the flumazenil-treated patients, compared with 28% of the placebo-treated patients. At the doses administered, flumazenil was less effective in reversing midazolam-induced amnesia, with only 60% of patients demonstrating partial recovery of memory. It was, nevertheless, more effective than placebo. Flumazenil was well tolerated. Dizziness (10%) and nausea (9%) were the most frequently reported adverse effects. Results of this study demonstrate that flumazenil antagonizes the central nervous system effects of midazolam after intravenous conscious sedation.

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