The Association between History of Body Injury during Sleep and Obstructive Sleep Apnea in REM Sleep Behavior Disorder
	    		
		   		
		   			
		   		
	    	
    	- Author:
	        		
		        		
		        		
			        		Ki-Hwan JI
			        		
			        		
			        		
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			        		Mi-Ri KANG
			        		
			        		
		        		
		        		
		        		
			        		
			        		Author Information
			        		
 - Publication Type:1
 - From:Journal of Sleep Medicine 2020;17(2):154-158
 - CountryRepublic of Korea
 - Language:Korean
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		        	Abstract:
			       	
			       		
				        
				        	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. 
            