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Sleep Studies

We Offer Daytime and Overnight Sleep Studies

Sleep studies measure a variety of activity, from brain waves, to heart rate, to eye movements and more. These tests are a painless way to diagnose sleep disorders that interfere with your ability to stay awake during the day or get a good night’s rest.

MultiCare’s Sleep Centers provide daytime and overnight sleep studies for adults and children. We accommodate all patients, including those who require the use of a lift or wheelchair. Testing for most sleep disorders is conducted in one of our sleep centers. However, testing for sleep apnea can be self-administered in your home. 

In addition to helping patients address sleep problems, we also evaluate commercial drivers and pilots who require sleep disorder screening for licensure.

In-Center Testing

In our state-of-the-art sleep centers, we provide comprehensive testing that monitors the quantity and quality of your sleep. All of our in-center sleep studies are administered by professional sleep technologists, certified by the American Academy of Sleep Medicine. Common studies include the following:

Nocturnal Polysomnogram (NPSG): Conducted overnight, these sleep studies monitor brain activity, heart rate, breathing, oxygen levels and body movement. NPSGs are used to diagnose a variety of sleep disorders, such as sleep apnea or parasomnias.

Split-Night Studies: This form of testing is an overnight study used to diagnose and treat sleep apnea. During the first part of the night, an NPSG is performed. Patients who meet criteria for sleep apnea are given continuous positive airway pressure (CPAP) therapy to improve breathing. CPAP therapy is delivered through a fitted mask worn over the nose. During the second part of the night, sleep is monitored while wearing the mask to calibrate the optimal amount of air pressure. This part of the study is commonly referred to as CPAP titration.

Sleep Apnea Treatment Studies: Patients diagnosed with sleep apnea are monitored while receiving therapy through devices that help with breathing. These types of studies include:

  • CPAP therapy
  • Bi-level positive airway pressure (Bi-PaP) therapy
  • Adaptive servo-ventilation (ASV) therapy
  • Oral appliance therapy

Multiple Sleep Latency Test (MSLT): This study is performed during the day, often following an NPSG. During this test, we ask patients to take short naps every two hours to determine how fast they fall asleep and what stage of sleep they enter. MSLTs are often used to diagnose narcolepsy.

Maintenance of Wakefulness Test (MWT): This study is performed during the day, often following an NPSG. Designed to test alertness in a non-stimulating environment, patients are asked to relax in a quiet, dark room for 40-minute intervals. Employees in public transportation — or other occupations where safety is paramount — may be required to take these tests. Learn more about in-center testing.

Home Testing

Home testing is a convenient option for diagnosing moderate-to-severe obstructive sleep apnea. Rather than spending the night in a sleep center, you can pick up the easy-to-use equipment and administer the study in the comfort of your own bedroom.

This option is not recommended for people who have certain medical conditions or who may suffer from additional sleep disorders. Learn more about home testing.

See a Sleep Specialist

If you would like to be evaluated for a sleep concern, call to schedule an appointment with one of our locations. Note that some insurance policies require a doctor referral for our services. Check with your insurance before your appointment to verify your coverage.

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