ORIGINAL ARTICLE |
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Year : 2022 | Volume
: 36
| Issue : 1 | Page : 25-31 |
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Childhood trauma and sleep-related daytime dysfunction in patients with bipolar II disorder: Is social support a factor?
Tsung- Hua Lu M.D 1, Yi- Ting Hsieh M.D 1, Shih- Hsien Lin Ph.D 2, Yen Kuang Yang M.D 3, Po See Chen M.D., Ph.D 2
1 Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan 2 Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University; Institute of Behavioral Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan 3 Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University; Institute of Behavioral Medicine, College of Medicine, National Cheng Kung University; Department of Psychiatry, Tainan Hospital, Ministry of Health and Welfare, Tainan, Taiwan
Correspondence Address:
Po See Chen No 138, Sheng Li Road, North District Taiwan
 Source of Support: None, Conflict of Interest: None
DOI: 10.4103/TPSY.TPSY_4_22
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Background: Sleep quality is an important predictor for prognosis of bipolar disorder (BD). Factors associated with sleep quality in BD such as childhood trauma experience merit investigation. Methods: We used the Pittsburgh Sleep Quality Index (PSQI), Childhood Trauma Questionnaire (CTQ), and Measurement of Support Functions (MSF) to access patients with BD-I (n = 31), and those with BD-II (n = 34). Results: We found that 71.4% of patients with BD-I and 90.9% of those with BD-II had poor sleep quality. Significantly higher CTQ physical abuse score and poor life quality were found among patients with BD-II (b = −0.008, Wald χ2 (1) = 5.024, p < 0.05). This effect remained robust (b = −0.012, Wald χ2 (1) = 8.150, p < 0.01) after controlling the use of drug (sedative, benzodiazepine, antipsychotic, and antidepressant). Moreover, the experience of childhood trauma was associated with poor sleep quality among patients with BD-II. A buffer effect of social support between physical abuse and daytime dysfunction, as measured by PSQI, was found in patients with BD-II, but not in those with BD-I. Conclusion: Social adversity and support were associated with sleep quality in patients with BD-II. This finding implied a stress-buffering model in patients with BD-II. But the underlying biological mechanism remains unclear.
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