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Dose-finding and premedication studies with zopiclone

J W Dundee, R J Elwood, P J Hildebrand

    International Pharmacopsychiatry
    |January 1, 1982
    PubMed
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    Zopiclone, a new hypnotic, effectively serves as a preanesthetic medication for gynecological surgery. The optimal dose of 7.5 mg zopiclone proved comparable to diazepam, offering enhanced efficacy at 90 minutes.

    Area of Science:

    • Anesthesiology
    • Pharmacology

    Background:

    • Preanesthetic medication aims to reduce patient anxiety and facilitate anesthesia induction.
    • Non-benzodiazepine hypnotics offer an alternative to traditional agents like benzodiazepines.

    Purpose of the Study:

    • To evaluate zopiclone as a preanesthetic medication in patients undergoing minor gynecological surgery.
    • To determine the optimal dose of zopiclone for preanesthetic use.

    Main Methods:

    • A randomized, double-blind, placebo-controlled study design was employed.
    • A dose-finding phase compared zopiclone (3.75 mg, 7.5 mg, 11.25 mg) with diazepam (10 mg) and placebo.
    • The main study utilized the determined optimal zopiclone dose (7.5 mg) against placebo and diazepam.

    Main Results:

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    • The optimal dose of zopiclone was established at 7.5 mg.
    • Zopiclone 7.5 mg demonstrated comparable efficacy to diazepam 10 mg at 20, 40, and 60 minutes post-administration.
    • Zopiclone 7.5 mg showed greater efficacy than diazepam 10 mg at 90 minutes.

    Conclusions:

    • Zopiclone 7.5 mg is an effective preanesthetic medication for minor gynecological surgery.
    • Zopiclone offers a viable alternative to diazepam, with potentially superior efficacy at later time points.