Ability of flumazenil, butorphanol, and naloxone to reverse the anesthetic effects of oxymorphone-diazepam in dogs
Abstract
OBJECTIVE: To evaluate the ability of flumazenil (FLU), butorphanol (BUT), and naloxone (NAL) to reverse the anesthetic effects of oxymorphone-diazepam in dogs.
ANIMALS: 6 healthy adult mixed-bread dogs.
PROCEDURE: Dogs were randomly assigned to each of 6 reversal treatment groups. In each experiment, oxymorphone (0.22 mg/kg of body weight, i.v.) and diazepam (0.22 mg/kg. i.v.) were given sequentially 15 minutes after glycopyrrolate (0.01 mg/kg, i.v.) administration. Physiologic saline solution (SAL; 1 ml), FLU (0.01 mg/kg), BUT (0.44 mg/kg), or NAL (0.06 mg/kg) alone, or FLU-BUT or FLU-NAL (same dosages) was given i.v. as a reversal treatment 15 minutes after oxymorphone-diazepam administration. An individual unaware of the treatment protocol recorded time to extubation, sternal recumbency, and walking.
RESULTS: Time to extubation was significantly (P < 0.05) less with BUT, NAL, FLU-BUT, or FLU-NAL treatment, compared with that for SAL treatment. Time to sternal recumbency was less with BUT, NAL, FLU-BUT, or FLU-NAL treatment, compared with that for SAL treatment. Time to walking was less with FLU-BUT or FLU-NAL treatment, compared with that for SAL treatment.
CLINICAL IMPLICATIONS: Flumazenil, in combination with BUT or NAL, can be used to reverse the anesthetic effects of oxymorphone-diazepam in dogs.
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design.
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