What is the duration of each nap during an MSLT?

During a Multiple Sleep Latency Test (MSLT), each nap is conducted for a duration of 20 minutes. The purpose of the MSLT is to objectively measure an individual's daytime sleepiness and to evaluate how quickly a person can fall asleep in a quiet environment.

In the MSLT, participants typically undergo a series of nap opportunities, usually scheduled two hours apart, and each nap session is tested for a maximum of 20 minutes. If the participant falls asleep during this time, the time it takes to fall asleep is recorded, and if the individual does not fall asleep, the session ends once the 20 minutes is completed. This standardization helps in producing reliable and consistent data regarding the subject's sleep latency and any underlying sleep disorders, such as narcolepsy.

The correct duration aligns with the established protocols used in sleep medicine, making it crucial for accurate diagnosis and assessment of sleep disorders.