As the name suggests, you stay overnight at a clinic, lab, or hospital, and are given a polysomnogram (PSG), which is a test that records and electronically transmits your body’s activities while your sleep.
A polysomnography records your:
- oxygen level in your blood
- breathing rate
- heart rate
- brain ways
- eye movements
These recordings are examined and interpreted by a sleep specialist who ascertains if you have sleep disorder, such as sleep apnea. If you’re diagnosed with sleep apnea, you may need to undergo more tests in order to see what treatment will be best for you.
What to Expect During an In-Clinic Sleep Study
You are assigned a private bedroom that’s close to a central monitoring area where there are technicians to monitor you while you sleep. You are hooked up to equipment, including surface electrodes, as well as belts around your abdomen and chest, to measure your breathing to digitally record your body’s functions. While the PSG is an effective sleep apnea test, it has drawbacks including that it’s inconvenient and you aren’t sleeping in your normal environment.