Prominence of Hyperarousal Symptoms Explains Variability of Sleep Disruption in Posttraumatic Stress Disorder

被引:41
作者
van Wyk, Mariza [1 ,2 ]
Thomas, Kevin G. F. [1 ,2 ,3 ]
Solms, Mark [1 ]
Lipinska, Gosia [1 ,2 ,3 ]
机构
[1] Univ Cape Town, Dept Psychol, UCT Sleep Sci, ZA-7700 Rondebosch, South Africa
[2] Univ Cape Town, Dept Psychol, ACSENT Lab, ZA-7700 Rondebosch, South Africa
[3] MRC Unit Anxiety & Stress Disorders, Cape Town, South Africa
基金
新加坡国家研究基金会;
关键词
hyperarousal; insomnia; polysomnography; posttraumatic stress disorder; sleep; PTSD; VETERANS; PRAZOSIN; NIGHTMARES; INSOMNIA; TRAUMA; SAMPLE;
D O I
10.1037/tra0000115
中图分类号
B849 [应用心理学];
学科分类号
040203 ;
摘要
Objective: Disrupted sleep is a central feature of posttraumatic stress disorder (PTSD). The precise nature of that disruption is not agreed upon, however, and there is no explanation for why sleep disruptions are detected in some PTSD-diagnosed individuals but not in others. We tested the novel proposition that PTSD-diagnosed individuals with prominent hyperarousal symptoms will have more disrupted sleep than those without such symptoms. Method: We assigned each of 57 female volunteers to 1 of 4 groups: PTSD + Hyperarousal (PTSD + HYP; n = 14), PTSD - Hyperarousal (n = 13), depression (n = 14), or healthy control (n = 16). Each experienced 1 night of polysomnographic recording in a sleep laboratory. Results: General linear modeling confirmed that group status (i.e., being in the PTSD + HYP group rather than the other groups) predicted disrupted sleep quality most strongly. PTSD patients with prominent hyperarousal symptoms, relative to those without such symptoms, experienced reduced sleep efficiency, spent more time awake after sleep onset, and self-reported poorer sleep quality. Conclusion: These preliminary findings, although requiring replication in larger samples, suggest an important association between hyperarousal symptoms and sleep quality in PTSD, and may help explain why some PTSD-diagnosed individuals experience markedly disrupted sleep whereas others do not.
引用
收藏
页码:688 / 696
页数:9
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