Maintenance of Wakefulness Test

Similar to the multiple sleep latency test (MSLT), the maintenance of wakefulness test (MWT) provides an objective measurement of the degree of daytime sleepiness. The MWT measures the ability of a person to resist sleep when instructed to remain awake for 20 minutes. It is a daytime study which usually begins two hours after awakening and involves a series of tests at set intervals throughout the day. However, unlike the MSLT, the patient is instructed to stay awake during the "nap" opportunities.

The patient is placed in a quiet room with dim lighting and asked to stay awake. The test is generally used to diagnose narcolepsy as well as to determine whether an individual’s inability to stay awake is a public or personal safety concern.

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Sleep Centers of Texas
7839 Interstate 10 West
San Antonio,TX 78230-4779

Phone: 210.520.8333
Fax: 210.520.8335


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