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Information About

Multiple Sleep Latency Test




It can use used to test for Narcolepsy , to distinguish between physical tiredness and true excessive daytime sleepiness, or to see if breathing disorder treatments are working.

The test consists of four or five, twenty minute naps that are scheduled about two hours apart. The test is often done following an overnight sleep study. During the test things such as your Brain Waves , EEG, muscle activity and eye movements are monitored and recorded. The entire test normally takes about 7 hours.


TYPICAL PROCEDURE

Prepration: On the day of the test the patient is asked to not take any stimulats such as tea, coffee, colas and chocolate.

  • Often a formal sleep study is done the night before.

  • Sometimes urine screening is done to make sure no substances exist in the subjects body that might interfere with sleep.

  • Patient may be asked to fill out a pre test questionare

  • Electrodes are attached to the patients head to record brain waves

  • Electrodes are attached by the eyes to record eye movement

  • Electrodes are attached to the chin to detect muscle tone

  • Heart beat may also be monitored

  • Patients are asked to perform simple tasks to test that the equipment is working properly

  • The patient is asked to nap for 20 minutes after which he is awoken

  • Nap process is repeated every two hours 4 or 5 times.

  • Patient may be asked to fill out a post test questionare


A Neurologist or sleep specialist will review the results and inform the patient of the outcome