Sleep Studies

What is a Sleep Study?

Our sleep studies, also known as polysomnography testing, are conducted by experienced sleep technicians and respiratory care practitioners who have been specially trained in sleep diagnostics. We are accredited by the American Academy of Sleep Medicine and all testing is done using state-of-the-art diagnostic equipment.

Why should I consider a sleep study?

A sleep study enables a doctor to prescribe a course of treatment that will help you sleep well, look and feel better and live a healthier life. Sleep studies can be crucial for people with obstructive sleep apnea, which, left untreated, can increase risk of cardiovascular disease, diabetes, high blood pressure and stroke.

What does a Sleep Study measure?

A sleep study, or polysomnogram, includes measurements used to identify the different sleep stages, breathing patterns, blood oxygen levels, muscle activity and heart rhythm, and is used to diagnose sleep disorders. The recording is accomplished by using electrodes applied to the head and skin with an adhesive. Flexible elastic belts around the chest and abdomen measure breathing. We also utilize transcutaneous oxygen monitoring (TCM) for appropriate patients (a way to measure blood flow by assessing the oxygen level of tissue beneath the skin).

There are different types of sleep studies. The most common are:

Polysomnogram (PSG) - general monitoring and evaluation, usually done overnight. This test records several body functions during sleep, including: brain activity, eye movement, oxygen & carbon dioxide blood levels, heart rate and rhythm, breathing rate and rhythm, the flow of air through your mouth and nose, snoring, body muscle movements, and chest & belly movement.

Split Night PSG with CPAP Titration - a Split Night PSG is conducted when moderate or severe Sleep Apnea has been discovered or strongly suspected during the first part of the night study. The second half of the night is used for CPAP titration to determine the optimal pressure used to treat Sleep Apnea.
Daytime Multiple Sleep Latency Test (MSLT) - a series of 5 naps used to diagnose Narcolepsy and measure the degree of daytime sleepiness. This test measures how long it takes you to fall asleep. To ensure accurate results, it is performed on the morning following a Diagnostic Overnight PSG.

Maintenance of Wakefulness Test (MWT) - a series of 5 naps used to measure how alert you are during the day. This test measures whether you can stay awake during a time when you are normally awake.

Take a look at our "What to Expect" photo tour to see inside a sleep study.