Sleep Test: A Guide for Patients
What to Expect During a Sleep Study
A sleep study collects information about how your body functions while you sleep. It measures things like:
- Brain activity
- Oxygen levels
- Breathing patterns and effort
- Airflow
- Heart rate and rhythm
- Muscle movements
This information helps your healthcare team understand how well you sleep and whether a sleep disorder may be affecting your health and quality of life.
Before the study begins, a sleep technologist will place small sensors on your body. These sensors are connected to a small monitoring device that you can carry with you if you need to get up during the night, such as to use the restroom.
Depending on your symptoms and the type of testing being done, you may be asked to try a Continuous Positive Airway Pressure (CPAP) mask. A CPAP device helps keep your airway open while you sleep, which can reduce snoring and improve breathing.
Most patients go to bed between 9:30 p.m. and 11:00 p.m. The sooner you fall asleep, the more sleep data can be collected.
Patient Instructions
1. Bring comfortable sleepwear. You may also bring your own pillow and blanket if you prefer. Setting up the monitoring equipment can take an hour or longer.
2. Come with clean, dry hair. Do not use hair products before your appointment. Fingernails should be free of nail polish.
3. Eat before you arrive. Bring any food, drinks, medications, or personal care items you may need during the night or the next morning.
4. Results will not be available during your visit. A sleep physician will review your study and send the results to your referring healthcare provider within two to three weeks.
5. Take your regular medications before your appointment unless they are normally taken during the night or cause drowsiness. If needed, bring those medications with you to the sleep center.