Watson Paula L
Crit Care. 2007;11(4):159. doi: 10.1186/cc6094.
Survivors of critical illness frequently report poor sleep while in the intensive care unit (ICU), and sleep deprivation has been hypothesized to lead to emotional distress, ICU delirium and neurocognitive dysfunction, prolongation of mechanical ventilation, and decreased immune function. Thus, the careful study of sleep in the ICU is essential to understanding possible relationships with adverse clinical outcomes. Such research, however, must be conducted using sleep measurement techniques that have important limitations in this unique setting. Polysomnography (PSG) is considered the gold standard but is cumbersome, time consuming, and expensive. As such, alternative methods of sleep measurement such as actigraphy, processed electroencephalography monitors, and subjective observation are often used. Though helpful in some instances, data obtained using these methods can often be inaccurate and misleading. Even PSG itself must be interpreted with caution in this population due to effects of critical illness and associated treatments.
危重症幸存者经常报告在重症监护病房（ICU）期间睡眠质量差，并且据推测，睡眠剥夺会导致情绪困扰、ICU谵妄和神经认知功能障碍、机械通气时间延长以及免疫功能下降。因此，仔细研究ICU中的睡眠对于理解其与不良临床结局之间的可能关系至关重要。然而，此类研究必须使用在这种独特环境中有重要局限性的睡眠测量技术。多导睡眠图（PSG）被认为是金标准，但操作繁琐、耗时且昂贵。因此，常使用诸如活动记录仪、处理后的脑电图监测仪和主观观察等替代睡眠测量方法。尽管在某些情况下有所帮助，但使用这些方法获得的数据往往可能不准确且具有误导性。由于危重症及相关治疗的影响，即使是PSG本身在这一人群中也必须谨慎解读。
