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Abstract：
This study was undertaken to determine whether a single night\'s use of triazolam by normal healthy sleepers leads to withdrawal insomnia on the subsequent night, and whether there is a dose response relationship to this phenomenon. Thirty normal sleepers of both sexes were randomly assigned to three parallel treatment groups. All subjects were studied for five consecutive nights by means of pre- and post-sleep questionnaires and all night polysomnography. Multiple sleep latency tests were conducted on the days following the second, third, and fourth nights in the laboratory. All subjects received placebo capsules on the first, second, fourth, and fifth nights in the laboratory and either placebo, 0.25 mg triazolam or 0.5 mg triazolam according to their assigned group on the third night. Both doses of the drug increased subjective estimates of sleep duration, but no objective increase was found. Neither dose altered daytime measures of sleepiness. No changes were found in any of the sleep parameters on withdrawal of the 0.25 mg dose of triazolam. However, discontinuation of the 0.5 mg dose did lead to significant objective and subjective withdrawal effects. It was concluded that higher doses of triazolam could lead to withdrawal effects in normal sleepers even when this drug was used for only a single night.
摘要：
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