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Wake–REM sleep transitions for measuring REM sleep disturbance: Comparison between narcolepsy, idiopathic hypersomnia and healthy controls

This study tested a well‐known but as yet nonoperationalized means for measuring REM sleep disturbance in patients with narcolepsy at night. We retrospectively analyzed polysomnographies of patients with narcolepsy with cataplexy (n= 18), narcolepsy without cataplexy (n= 12), idiopathic hypersomnia (n= 22) and healthy controls (n= 33) with regard to the number of wake–REM sleep transitions as a measurement for REM sleep disturbance at night. We found a significantly higher number of transitions between wake and REM sleep (14.17 ± 2.00) in patients with narcolepsy with cataplexy than in healthy controls (3.70 ± 1.00; p < 0.001) and patients with idiopathic hypersomnia (5.36 ± 1.00; p= 0.001). These results confirm previous findings that REM sleep disturbance is a specific phenomen…

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