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Citation
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Trotti LM, Saini P, Bremer E, Mariano C, Moron D, Rye DB, Bliwise DL. J. Clin. Sleep Med. 2022; ePub(ePub): ePub. |
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Abstract
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STUDY OBJECTIVES: The central disorders of hypersomnolence (CDH) manifest with daytime sleepiness, often accompanied by cognitive symptoms.
OBJECTIVE tests characterizing cognitive dysfunction may have diagnostic utility. Further, because some people with CDH report worsening cognition upon awakening, cognitive testing before and after napping may provide additional diagnostic information.
METHODS: CDH patients with idiopathic hypersomnia (n = 76), narcolepsy type 1 (n = 19), narcolepsy type 2 (n = 22), and self-reported excessive daytime sleepiness not meeting current diagnostic criteria (n = 76), and non-sleepy controls (n = 33) underwent testing with the psychomotor vigilance test (PVT), a 10-minute reaction time test. A subset of participants underwent repeat testing during a Multiple Sleep Latency Test (MSLT), before and immediately after naps 2 and 4.
RESULTS: Most PVT metrics were significantly better in controls than in patients with CDH. Minimal group differences in PVT performance were observed by CDH diagnosis. PVT performance was weakly correlated to Epworth and MSLT mean sleep latency in the CDH group. Before and after naps, PVT metrics were minimally different for controls, while PVT performance generally worsened following naps in the CDH group, with significant worsening compared to controls for nap 2 mean, median, lapses, and fastest 10% of responses, and nap 4 lapses and slowest 10% of responses. Change in performance did not differ based on CDH diagnostic group for any metric on either nap.
CONCLUSIONS: The PVT, at baseline and following a short nap, may provide adjunctive diagnostic utility in separating individuals with CDH from controls.
Language: en |