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J Sleep Med > Volume 17(2); 2020 > Article
J Sleep Med. 2020;17(2):154-158.         doi: https://doi.org/10.13078/jsm.200028
The Association between History of Body Injury during Sleep and Obstructive Sleep Apnea in REM Sleep Behavior Disorder
Ki-Hwan Ji , Mi-Ri Kang
Department of Neurology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
Corresponding Author: Ki-Hwan Ji ,Tel: +82-51-890-8613, Fax: +82-51-890-6367, Email: kihwanji@gmail.com
Received: November 4, 2020   Revised: November 23, 2020   Accepted: November 24, 2020   Published online: December 31, 2020
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Objectives: To investigate whether a history of body injury is associated with obstructive sleep apnea (OSA) in patients with rapid eye movement (REM) sleep behavior disorder (RBD).
Methods: We enrolled 56 consecutive patients with RBD, a history of dream-enacting behaviors, and polysomnographic evidence of REM sleep without atonia. Participants were asked whether they had any history of body injuries such as self-injury or bed-partner injury during sleep. The demographic characteristics and polysomnographic parameters of the groups with a history of injury (n=34, 60.7%) and without (n=22, 39.3%) were compared. The association between the history of injury and OSA was assessed.
Results: OSA [apnea-hypopnea index (AHI) ≥5/h) was associated with a history of body injury [odds ratio (OR)=6.25, 95% confidence interval (CI)=1.64–23.84]. Additionally, the logistic regression analysis showed that insomnia severity index (OR=0.87, 95% CI=0.80–0.98) and AHI (OR=1.10, 95% CI=1.02–1.18) were associated with history of body injury.
Conclusions: Therefore, we can conclude that history of body injury is related to obstructive sleep apnea in patients with RBD.
Keywords: REM sleep behavior disorder | Obstructive sleep apnea | Injuries
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