Types of Tests
An Overnight Sleep Study Polysomnogram (PSG)
A PSG is a test that is conducted in a sleep laboratory or hospital setting where the patient has to stay overnight.
Home Sleep Test (HST)
Also called an Out of Center Sleep Test (OCST) – this test is performed by using a device that the patient wears in the comfort of their own home. The patient is given instructions on how to use the device and will return it to the dispensing office for the report to be evaluated.
Apnea-Hypopnea Index (AHI)
After completing your sleep study, your clinician will determine if you suffer from OSA based on two main factors:
- Oxygen Desaturation levels
- Respiratory Effort Related Arousals (RERA)
The doctor may also share with you a level of disease severity (mild, moderate or severe).