About Sleep Lab Tests
Offering A Variety of Sleep Lab Tests for Every Diagnostic Need
University Hospitals Elyria Medical Center sleep labs are full-service facilities that offer the following tests:
Polysomnogram (PSG) Study*: This is the core sleep study test that will help the physician diagnose the main cause of a sleep disorder. It consists of an overnight study in the sleep lab in which the patient will be monitored with special equipment that records brain activity, breathing, cardiac patterns and leg movements.
Positive Airway Pressure (PAP) Titration*: This study is ordered after a patient has been diagnosed with sleep apnea. Depending on the physician's preference, the patient may or may not have been fitted with a PAP mask and machine before coming into the lab. This overnight study helps determine the best pressure for the patient, which in turn, will help decrease or eliminate sleep apnea and snoring.
Split Night Study*: This study is the combination of the PSG and PAP titration studies. For the first part of the study, the PSG test is conducted. Patients exhibiting more than 20 respiratory events an hour during the first two hours of the study will be woken by the technologist, who will then initiate the PAP titration.
Multiple Sleep Latency Test (MSLT): This test is run the morning following a PSG study to help rule out narcolepsy. The PSG study is necessary the night before the MSLT to ensure that the patient is not excessively sleepy during the day due to sleep apnea or insomnia. The MSLT test is a series of 4-5 naps that run for 20 minutes every 2 hours, starting 2 hours after the end of the PSG study.
Maintenance of Wakefulness Test (MWT): This test is performed during the day. It may or may not follow a night time sleep study, depending on the physician's order. It is run in a manner similar to the MSLT, except the patient is instructed to resist sleep. The Federal Aviation Administration, Ohio Department of Transportation, trucking companies and similar types of employers may request that this test be performed on employees for safety reasons.
*The PSG, PAP Titration and the Split Night Studies can also be run during the day for any patient working a night shift position.