Sleep study; Polysomnogram; Rapid eye movement studies; Split night polysomnography; PSG
A sleep study keeps track of:
Results are most often reported using the Apnea-Hypopnea Index (AHI). An AHI of less than 5 is considered normal.
A normal test result also shows normal patterns of brain waves and muscle movements during sleep.
Apnea-Hypopnea Index (AHI) results are used to diagnose obstructive sleep apnea.
The sleep specialist must also look at other findings from the sleep study, as well as the medical history and physical exam to make the diagnosis and decide on treatment. A sleep study can also help diagnose narcolepsy.
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Tice JA. Portable devices used for home testing in obstructive sleep apnea. California Technology Assessment Forum. March 11, 2009. Accessed June 9, 2010.
Collop NA, Anderson WM, Boehlecke B, et al. Clinical guidelines for the use of unattended portable monitors in the diagnosis of obstructive sleep apnea in adult patients. Portable Monitoring Task Force of the American Academy of Sleep Medicine. J Clin Sleep Med. 2007;3:737-747.
Epstein LJ, Kristo D, Strollo PJ Jr. Adult Obstructive Sleep Apnea Task Force of the American Academy of Sleep Medicine. Clinical guideline for the evaluation, management, and long-term care of obstructive sleep apnea in adults. J Clin Sleep Med. 2009;5:263-276.
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