How many naps are taken during a MSLT
4-5
How long are the naps during MSLT
20 minutes
How much time is there in between each nap for MSLT
2 hrs
How long after the nocturnal sleep does MSLT start
1.5-3hrs
What is used to monitor during MSLT
EEG, EOG, Leg EMG, resp effort & flow, snore sensor
What are the conditions for sleep during MSLT
Comfortable clothes
Out of bed between naps
Have pt. Try to sleep
What is the normal sleep latency
10-20min
What does a MSLT score of 5-10 indicate
Diagnostic gray zone (moderate sleepiness)
What indicates pathological Multiple Sleep Latency Test
<5 min (severe sleepiness)
By what does going into REM within 15 minutes after falling asleep indicate
Sleep-onset REM
What MSLT score indicates narcolepsy
2 or more SOREM’s & <8 minutes
What MSLT is suggestive of Narcolepsy
1 SOREM and score 5-10 minutes
What MSLT indicate Pathological sleepiness (idiopathic hypersomnolence)
Sleep onset <8 min and <2 SOREM
When do you use a Maintenance of Wakefulness Test
Mainly used to assess improved alertness following therapeutic intervention (sensitive to effects of stimulants; MSLT is not
What do certain sleep labs require before a MWT
Sleep study night before
Which electrodes are used for MWT
Same as MSLT
How long is an Maintenance Wakefulness Test
40 minutes
What environment is the Maintenance wakefulness Test done
In an almost dark room and they try to stay awake.
How many sessions are the MWT
4 sessions
How many hours between each session of MWT
2 hrs apart
How many hours after waking up is MWT preformed
1.5-3 hrs
When do you end a MWT trial
After 3 epochs of stage 1 sleep or 1 epoch of any other stage
What is failure in a MWT
If 15 seconds of sleep in any trial (may change from patient to patient)
What percent of narcoleptic patients have sleep attacks
100%
