Multiple Sleep Latency Test
Maintenance of Wakefulness Test
A polysomnogram is a procedure which records your sleeping patterns. Each study may vary depending on your needs and the physicians' request. PSG recordings include:
Electroencephalogram (EEG) – Records brain wave activity and prominent features of wakefulness and sleep. The two main states of sleep are non-REM and REM sleep.
Electrocardiogram (EKG) – Records cardiac rate and rhythm
Electro-occulogram (EOG) – Records activity and movement of the eyes.
Electromyogram (EMG) – Chin EMG detects the muscle tone of the chin and jaw area, helping to distinguish non-REM from REM sleep, also detects bruxism. Leg EMG detects foot and leg movements useful in diagnosing Periodic Limb Movement Syndrome or Restless Leg Syndrome.
Thermister – Placed directly underneath the patients nose to produce a waveform based on the patient's airflow.
Respiratory Belts - thin belts placed around the chest and abdomen to detect respiratory effort.
Pulse Oximetry – non-invasive tool placed on the finger tip that measures the oxygen saturation of hemoglobin in the blood.
Despite the monitoring devices, most patients find it easy to fall asleep.
Continuous Positive Airway Pressure (CPAP) Titration
Prior to the CPAP titration, you will be fitted with a CPAP interface that is most comfortable for you. All of the monitoring equipment listed above will be applied. Using the appropriate CPAP interface, the patient will be placed on CPAP, a device that will keep the airway open during sleep. Throughout the procedure, the technician will monitor the recording and will adjust the pressure of the CPAP unit to determine the optimal pressure to eliminate apnea and snoring.
Multiple Sleep Latency Test (MSLT) MWT
The Multiple Sleep Latency Test is an objective test to evaluate sleepiness.
The morning after a polysomnogram, the patient is given four or five 20 minute nap opportunities every 2 hours. Your sleep will be monitored during each nap opportunity. Between tests, your room will be made available for you to relax and watch TV, read or work on a project brought from home.
Maintenance of Wakefulness Test (MWT)
The Maintenance of Wakefulness Test is an objective test used to evaluate an individuals ability to stay awake.
The morning after the polysomnogram, the patient is given four - 40 minute trials in a dimly lit room to stay awake. Each trial is performed every two hours. Between tests, your room will be made available for you to relax and watch TV, read or work on a project brought from home.
Space Coast Sleep Disorders Center
640 Classic Court, Suite 106
Melbourne, Florida 32940