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KMID : 1002120130100020062
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Journal of Korean Sleep Research Society
2013 Volume.10 No. 2 p.62 ~ p.65
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Two Cases of REM Sleep Behavior Disorder Combined with Severe Obstructive Sleep Apnea: Misdiagnosed as “Pseudo-REM Sleep Behavior Disorder” by Diagnostic Polysomnography
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Jang Hyun-Jung
Kim Bo-Mi
Ryu Ho-Sung
Lee Gha-Hyun
Lee Sang-Ahm
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Abstract
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REM sleep behavior disorder (RBD) is a sleep disorder characterized by loss of normal voluntary muscle atonia during REM sleep associated with complex motor behavior while dreaming. Dream-enacting behaviors can also occur in patients with other sleep disorders such as obstructive sleep apnea (OSA). This clinical situation has been termed “pseudo-RBD”. In contrast, OSA causes frequent arousal, which may consequently result in masking of RBD symptoms. We reported two patients with severe OSA, who were initially diagnosed with “pseudo-RBD” but on continuous positive airway pressure (CPAP) titration, rediagnosed with “true-RBD”. When RBD is clinically suspected but is not confirmed by diagnostic overnight polysomnography, we have to keep in mind that RBD could be detected during CPAP titration.
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KEYWORD
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REM sleep behavior disorder, Pseudo-REM sleep behavior disorder, Obstructive sleep apnea, REM sleep without 0atonia
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