title: [Alterations of sleep stage patterns in humans and carry-over effects under estazolam / 1st comm.: effects of estazolam on sleep disturbed by jet fly-over noise (author's transl)].
abstract: Effects of the benzodiazepine derivative 8-chloro-6-phenyl-4H-s-triazolo(4,3-a)-(1,4)benzodiazepine (estazolam, BAY k 4200) on sleep stage patterns of 10 subjects were studied in the laboratory under double-blind conditions during quiet and noise-disturbed nights. The noise of 17-20 jet fly-overs was presented during sleep. The mean peak level of the noise was 97 dB(A) measured indoors near the sleeper's head. Intermittent wakefulness, stage 1 and movement time (MT) increased during noise-disturbed nights. Estazolam suppressed the phases of intermittent wakefulness during the quiet night and reduced stage 1 and MT. Arousal reactions by jet noise were milder and shorter under estazolam. Both effects resulted in equal amounts of intermittent wakefulness, stage 1 and MT during the noise-disturbed night under estazolam and during the quiet night under placebo. The dosage of 2 mg estazolam had no significant effect on stage REM, but delta-sleep decreased. Hints of carry-over effects were found in the sleep stage patterns. Effects of estazolam were seen in the estimations of sleep quality and mood by the subjects in the morning after awakening.
mesh_terms: D000328:Adult; D000401:Aircraft; D014151:Anti-Anxiety Agents / Q000494:pharmacology*; D004311:Double-Blind Method; D004949:Estazolam / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008297:Male; D009622:Noise; D009624:Noise, Transportation; D012894:Sleep Stages / Q000187:drug effects*; D012895:Sleep, REM / Q000187:drug effects
chemical_list: D014151:Anti-Anxiety Agents; D004949:Estazolam
vernacular_title: Veränderungen der Schlafstadienmuster des Menschen und Hang-over-Effekte unter Estazolam. 1. Mitt.: Wirkungen von Estazolam auf Schlafstörungen durch Fluglärm.