Nozawa T, Ichikawa H, Takeuchi T
Department of Neurology, Showa University School of Medicine, Tokyo, Japan.
Psychiatry Clin Neurosci. 1998 Apr;52(2):192-4. doi: 10.1111/j.1440-1819.1998.tb01025.x.
The relationship of periodic limb movements (PLM) and sleep-wake disorders in 11 patients was investigated. Two patients complained of insomnia. A patient with cervical spinal canal stenosis had a complaint of difficulty in initiating sleep. Movement index (MI) was 51 and PLM arousal index was 8. A patient with chronic hemodialysis had a complaint of difficulty in initiating and maintaining sleep. MI was 79 and PLM arousal index was 51. One patient with myotonic dystrophy showed 79 in MI and 3 in PLM arousal index. It is suspected that myotonic dystrophy is less sensitive to stimuli during sleep (i.e. PLM). These results suggest that the sleep-wake disorders associated with PLM relate to the threshold of awakening.
对11例患者的周期性肢体运动（PLM）与睡眠-觉醒障碍之间的关系进行了研究。2例患者主诉失眠。1例患有颈椎管狭窄的患者主诉入睡困难。运动指数（MI）为51，PLM觉醒指数为8。1例慢性血液透析患者主诉入睡和维持睡眠困难。MI为79，PLM觉醒指数为51。1例强直性肌营养不良患者的MI为79，PLM觉醒指数为3。怀疑强直性肌营养不良在睡眠期间（即PLM）对刺激不太敏感。这些结果表明，与PLM相关的睡眠-觉醒障碍与觉醒阈值有关。
