West Lakes Sleep Center
Why a Sleep Study?
A sleep study can provide information and diagnosis about some of the sleep disorders listed below. There are more than 80 sleep disorders.
- Obstructive Sleep Apnea
- Restless Leg Syndrome
- REM-Rapid Eye Movement Disorder (physically acting out your dreams)
- Hypersomnia: excessive daytime sleepiness even though you have 8 hrs. or more of sleep
- Sleep Walking/Eating
- Nocturia: frequent bathroom use during the night
- Bruxism: teeth grinding/jaw clenching
- Circadian Rhythm Disorder: Jet lag
- Delayed Sleep Phase Syndrome
- Cataplexy: indicator of Narcolepsy
- Night Terrors
- Sleep Paralysis
MSLT: MAINTENANCE OF SLEEP LATENCY TEST
The Gold Standard for testing a patient to make a diagnosis of Narcolepsy. If a patient presents to the physician the following complaints an overnight Polysomnography with MSLT may be ordered:
Do you have problems staying awake or alert during the day or do you have sleep attacks?
Have you ever fallen down when angry or laughing?
If you nap, are your naps refreshing?
Do you ever awaken from sleep unable to move?
Do you see, hear or feel things or experience vivid hallucinations when falling to sleep or
awakening from sleep?
An MSLT is a series of 20 minute naps (4-5) following an overnight Polysomnography. The opportunity to take a nap is offered at two hour intervals, beginning when the patient wakes in the morning.
Purpose: two or more naps containing REM sleep may test positive for Narcolepsy.
MWT: MAINTENANCE OF WAKEFULNESS TEST
The Gold Standard for testing the patient’s ability to stay awake in a quiet, calm, and subdued environment. This test is used in the Airline and Transportation Industry. An overnight Polysomnography may or may not be ordered prior to the MWT. The patient is asked to dress in street clothes, sit quietly in a recliner in a dimly lit room. Television, radio, and cell phones are not allowed in use while testing. The tests are offered in a series of four 40 minute opportunities, with two hour intervals.
Purpose: the patient must remain awake in each opportunity to pass the test and be released back to work.
POLYSOMNOGRAPHY: SLEEP STUDY
The Gold Standard used to test a patient who has complaints about inadequate sleep.
Some sleep complaints may be:
Excessive daytime sleepiness, little or no energy, no exercise
Depression, weight gain
Witnessed Apnea, gasping for breath
POLYSOMNOGRAPHY/SPLIT NIGHT SLEEP STUDY:
This is an all night Polysomnogram with permission to start treatment if the patient meets the criteria of Obstructive Sleep Apnea and guidelines of the insurance company.
If the patient tests positive OSA, the technologist will then initiate PAP therapy. The PAP pressure will be adjusted throughout he patient’s sleep to achieve optimal PAP pressure to maintain airway patency.
Sometimes the patient does not meet qualifications for treatment until late in the morning. PAP therapy can not be initiated past 2 am. PAP pressure adjustments require 3-4 hours to achieve optimal pressure. The patient will be required to return to the sleep center for the titration portion of the treatment.
A sleep study (Polysomnogram) with PAP therapy.