Polysomnography (PSG) is a multimodality diagnostic assessment tool used to evaluate sleep-related disturbances. PSG consists of simultaneous recording of multiple physiologic parameters. Presently, laboratory-based nocturnal (nighttime) PSG is considered the standard for the diagnosis of obstructive sleep apnea syndrome (OSAS). PSG is also useful to evaluate other abnormalities of sleep and/or wakefulness directly but also can diagnose other physiological disorders that will have the same type of impact.
Polysomnography is used to assess a variety of sleep-related disorders, including but not limited to insomnias, parasomnias, obstructive/central sleep apnea, nocturnal seizures or myoclonus, narcolepsy, sleep disordered breathing, restless leg syndrome, and periodic limb movement disorder. It is traditionally performed by having the patient or subject spend the night in a sleep laboratory, but scaled-down evaluations are increasingly conducted in patients’...
References and Readings
- Iber, C., Ancoli-Israel, S., Chesson, A., & Quan, S. F. (2007). The AASM manual for the scoring of sleep and associated events: Rules, terminology and technical specifications. Westchester: American Academy of Sleep Medicine.Google Scholar