| NPSG (Nocturnal Polysomnogram): This is an all night observational study of the patient’s sleep patterns. The Polysomnogram consist of continuous monitoring of central and occipital electroencephalograms, submental and anterior tibialis electromyograms, and measures of thoracic and abdominal ventilatory effort. Nasal and oral airflow are by thermocouples, and SpO2 levels by pulse oximatry. This study helps to determine if you have a sleeping disorder. NPSG w/ NCPAP Titration. (Nocturnal Polysomnogram with Nasal Continuous Positive Airway pressure) this is an all night treatment for patients who have already been diagnosed with sleep apnea. The use of airway pneumatic splinting (CPAP) will treat sleep apnea and snoring. The patient’s airway will be held open with pressurized filtered air to correct for the diagnosis of sleep apnea. MSLT( Multiple Sleep Latency Test) This study is used for hypersomnolence and must be followed by a NPSG study. It documents how clinically sleep a patient is. It is also used to test for Narcolepsy. MWT (Maintenance Wakefulness Test) This test provides information on the patient’s ability to maintain wakefulness during specific portions of the day or night. The patient is required to sit comfortable in a chair for 40 minutes under permissible situations and try to maintain wakefulness. (4 trials- 40 mins. Each every 2 hours). This test usually follows a NPSG or NPSG w/CPAP to verify the patient has adequately slept the night before. The doctor must specify whether a NPSG is to be performed the night before the MWT. This is the current test available for release back into work for Truck Drivers, Bus Drivers, and Airline Pilots.
NPSG w/Bi Level Pap
(Nocturnal Polysomnogram with Bi Level Positive Airway Pressure)
This is an all night treatment for sleep apnea with the use of NCPAP with the use of different positive airway pressures for spontaneous inhalation and exhalation. Used for treatment of hypoventilation. Usually used if CPAP has failed. |
