An overnight sleep study helps your care team develop the best treatment plan for your sleep disorder. The study, called a polysomnogram, helps us see disruptions in your sleep patterns. The test uses sensors to monitor your:
- Brain waves
- Heart rate
- Leg movements
Before your study
Before arriving at our sleep lab:
- Wash your hair thoroughly.
- Eat a full meal.
What to bring
- Any medications you take regularly
- Two-piece pajamas (towels and bedding are provided)
You may also want to bring:
- Reading material
- A movie
- Laptop or tablet
If you need a caregiver
Family and friends are discouraged from visiting, but let your doctor know if you need a caregiver to stay with you.
Getting to the sleep lab
Your test will be at one of our sleep labs:
- Residence Inn by Marriott Portland Downtown/Riverplace in the South Waterfront District
OHSU Health Sleep Medicine Lab in Tanasbourne
Your doctor or scheduler will provide directions and parking information. You should arrive by 8 p.m.
Please call your lab if you’re running late:
- Between 8 a.m. - 4:30 p.m.: 503-418-1850
- Marriott lab after 4:30 p.m.: 503-494-0154
- Tanasbourne lab after 4:30 p.m.: 503-418-1855
If we haven’t heard from you by 8:15 p.m., we will contact someone on our waiting list.
What to expect during a sleep study
After you arrive: You will change into your pajamas. A sleep technologist will apply electrodes and sensors to your body and attach them to a wire box, a process that takes 30 to 60 minutes. You will be able to walk and use the restroom without help.
Bedtime: The wire box will be attached to a computer to be monitored from an adjoining room. You’ll be fitted with a nasal tube and a small heart monitor to measure your breathing. You may wear a CPAP (continuous positive airway pressure) mask over your nose. If you use CPAP at home, you can bring your own mask.
Split-night study: You may be have a split-night study. You’ll get a “baseline study” followed by a CPAP “titration study” to figure out the correct airway pressure.
Sleeping: Even with the devices attached, most people are able to get a close-to-normal night’s sleep.
After your study
In the morning: Wakeup is typically around 6 a.m. Wires and other devices will be quickly removed, and you will be asked to fill out a short questionnaire before you leave.
Results: Results are usually available within two weeks. They will be shared in your MyChart account or at your next office visit.
Call 503-494-6066 to:
- Request an appointment
- Seek a second opinion
- Ask questions
Call 503-418-1850 for a sleep study appointment in one of our sleep labs.