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Ma Zui Xue Za Zhi ; 28(4): 443-52, 1990 Dec.
Article in Zh | MEDLINE | ID: mdl-2097486

ABSTRACT

The effect of flumazenil, a benzodiazepine antagonist, was assessed in a random, double-blind clinical study in which each of the four groups of surgical outpatients comprising 20 in each was given either ketamine 100 mg (K), etomidate 20 mg (E), thiopental 300 mg (T) or flunitrazepam 4 mg (F) for induction of anesthesia. On emergence, patients in each group were randomly given 2cc of either 2 coded solutions, one of which contained 0.2 mg flumazenil and the other of which was normal saline. Following injection of coded solution, all patients were assessed at 0, 5, 15, 30, 60 and 120 min for wakefulness. All 10 patients of group F who received flumazenil were alert and able to recall at 5 min, whereas in group T this was noted from 15 to 30 min. Patients of group E and K responded alike in a manner as of those who received normal saline placebo with onset of wakefulness at 30 and 60 min respectively. These results confirm that flumazenil antagonizes flunitrazepam (within 5 min) and also indicate that the antagonizing effect occurs 30 min following injection for thiopental, suggestive of some cross-reactivity between these two drugs.


Subject(s)
Etomidate/antagonists & inhibitors , Flumazenil/pharmacology , Ketamine/antagonists & inhibitors , Thiopental/antagonists & inhibitors , Adult , Etomidate/adverse effects , Female , Flumazenil/adverse effects , Humans , Ketamine/adverse effects , Male , Thiopental/adverse effects
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