Yagi Tomoko, Itoh Hiroshi
Ota Sleep Disorders Center.
Nihon Rinsho. 2009 Aug;67(8):1563-7.
By definition, insomnia entails a subjective component relating to the perception of poor sleep, which may and may not be supported by objective evaluation of sleep. Although polysomnography (PSG) is the objective method that provides a comprehensive measurement of sleep and is essential in diagnosing many sleep disorders, it is not usually necessary in the assessment of an insomnia complaint. Recent practice parameters for the evaluation of insomnia published by American Academy of Sleep Medicine states that PSG is not indicated for routine evaluation of chronic insomnia. PSG should be considered in the situations where the patient presents with pathologic levels of sleepiness, reported symptoms of other sleep pathologies (e.g., sleep-disordered breathing, periodic limb movements, parasomnias).
根据定义，失眠包含与睡眠质量差的感知相关的主观成分，这种感知可能得到睡眠客观评估的支持，也可能未得到支持。尽管多导睡眠图（PSG）是一种能全面测量睡眠的客观方法，对诊断许多睡眠障碍至关重要，但在评估失眠主诉时通常并非必需。美国睡眠医学会发布的近期失眠评估实践参数指出，PSG不适用于慢性失眠的常规评估。在患者出现病理性嗜睡水平、报告有其他睡眠病理症状（如睡眠呼吸紊乱、周期性肢体运动、异态睡眠）的情况下，应考虑进行PSG检查。
