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Short-term stability and night-to-night variability of sleep parameters in nightmares comorbid with chronic insomnia Disorder across multiple nights of polysomnography.
Paquet, Caitlin; Lenker, Kristina P; Calhoun, Susan L; Bixler, Edward O; Vgontzas, Alexandros N; Fernandez-Mendoza, Julio.
Afiliação
  • Paquet C; Department of Psychiatry and Behavioral Health, Sleep Research and Treatment Center, Penn State College of Medicine, Hershey, PA, USA.
  • Lenker KP; Division of Sleep and Circadian Disorders, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
  • Calhoun SL; Department of Psychiatry and Behavioral Health, Sleep Research and Treatment Center, Penn State College of Medicine, Hershey, PA, USA.
  • Bixler EO; Department of Psychiatry and Behavioral Health, Sleep Research and Treatment Center, Penn State College of Medicine, Hershey, PA, USA.
  • Vgontzas AN; Department of Psychiatry and Behavioral Health, Sleep Research and Treatment Center, Penn State College of Medicine, Hershey, PA, USA.
  • Fernandez-Mendoza J; Department of Psychiatry and Behavioral Health, Sleep Research and Treatment Center, Penn State College of Medicine, Hershey, PA, USA.
Sleep ; 47(4)2024 Apr 12.
Article em En | MEDLINE | ID: mdl-38300896
ABSTRACT
STUDY

OBJECTIVES:

The purpose of this study was to examine the degree of short-term stability of polysomnographic (PSG) measured sleep parameters and the overall differences between individuals with comorbid nightmares and insomnia compared to those with chronic insomnia disorder alone or good sleeping controls across four nights in the sleep lab.

METHODS:

A total of 142 good sleeping controls, 126 chronic insomnia alone, and 24 comorbid insomnia/nightmare participants underwent four consecutive nights of 8-hour PSG recordings. Outcomes included sleep continuity, architecture, and REM-related parameters across nights one through four. Intraclass correlation coefficients with mixed-effect variances and repeated-measure analysis of covariance were used, respectively, to determine short-term stability as well as between-participants and time-by-group interaction effects.

RESULTS:

Wake after sleep onset and stage 1 showed "poor stability" in the comorbid insomnia/nightmare group compared to "moderate stability" in the good sleeping controls and chronic insomnia alone group. Significant between-group effects (all ps < .05) showed that the comorbid insomnia/nightmare group took longer to fall asleep and had a greater first-night-effect in stage 1 compared to good sleeping controls and chronic insomnia alone group; in addition, the comorbid insomnia/nightmare and insomnia alone groups slept shorter, with fewer awakenings and REM periods, compared to the good sleeping controls.

CONCLUSIONS:

Nightmares are associated with abnormal sleep above and beyond REM disruption, as sleep continuity was the primary aspect in which poor stability and group differences emerged. The greater inability to fall asleep and instability of sleep fragmentation in those with comorbid insomnia/nightmares compared to chronic insomnia alone may be attributed to the impact of presleep anticipatory anxiety and nightmare-related distress itself. CLINICAL TRIAL INFORMATION The data analyzed in this study does not come from any current or previous clinical trials. Therefore, there is no clinical trial information to report.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Distúrbios do Início e da Manutenção do Sono Limite: Humans Idioma: En Revista: Sleep Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Distúrbios do Início e da Manutenção do Sono Limite: Humans Idioma: En Revista: Sleep Ano de publicação: 2024 Tipo de documento: Article