MULTIPLE SLEEP LATENCY TEST
What is a Multiple Sleep Latency Test ?
This is a specialized sleep study that is typically done as a follow up to a sleep study. It is usually done in isolation and involves spending the better part of the day in one of the Children’s Sleep Laboratories.
Who needs it?
This is typically done as a follow on in patients with excessive sleepiness as in suspected narcolepsy or hypersomnia. This study is not typically done in a patient with excessive sleepiness related to obstructive sleep apnea syndrome.
How is it done?
This involves the patient being asked to relax and allow themselves to sleep. If sleep is not achieved within 20 minutes then the patient takes a break for 2 hours and the cycle is repeated 4 to 5 times. If the patient does achieve sleep within 20 minutes, then the patient is allowed to sleep for a maximum of 15 minutes and is then woken up. If the patient does sleep, then the sleep is watched closely to see if the patient attains REM sleep.