Abstract:
BACKGROUND:Noradrenergic function has been linked to posttraumatic stress disorder (PTSD) and might have a role in mediating sleep disturbances of the disorder. Our objective was to relate a peripheral manifestation of noradrenergic function, sympathetic nervous system activity as indexed by heart rate variability during sleep, to the development of PTSD in subjects with recent traumatic injuries. METHODS:Subjects who had recall of life-threatening experiences were recruited from one of two regional trauma centers. Select subjects received a polysomnographic recording within 1 month of the trauma. Digitized electrocardiogram recordings were extracted from early and late rapid-eye-movement (REM) and preceding non-REM sleep periods. Autoregression was applied to R-R interval time series to calculate the ratios of low-frequency to high-frequency spectral densities (LF/HF ratios), which index sympathetic activation. Posttraumatic stress disorder status was determined at 2 months. RESULTS:There was a significant state x group interaction: LF/HF ratios were higher during the REM sleep of the nine subjects who were positive for PTSD symptoms, compared with the 10 subjects who were PTSD negative. CONCLUSIONS:Our findings are consistent with the possibility that increased noradrenergic activity during REM sleep contributes to the development of PTSD.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Mellman TA,Knorr BR,Pigeon WR,Leiter JC,Akay Mdoi
10.1016/j.biopsych.2003.12.018subject
Has Abstractpub_date
2004-05-01 00:00:00pages
953-6issue
9eissn
0006-3223issn
1873-2402pii
S0006322304000587journal_volume
55pub_type
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journal_title:Biological psychiatry
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章
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