Diagnosing Sleep Apnea

Sleep diagnostic testing can be done via an overnight polysomnography test (PSG) or a home sleep test (HST). The PSG test is a complex and comprehensive test for all sleep-related disorders.

For sleep apnea diagnosis, both tests aim to measure the frequency of apneas and hypopneas (abnormally slow or shallow breathing) per hour of sleep. This is known as the Apnea-Hypopnea Index (AHI). An AHI of less than 10 (5 in some clinics) indicates absence of sleep apnea. Scores between 10 and 20 indicate probable mild sleep apnea. Higher scores indicate moderate or severe sleep apnea.

The most common sleep disorder that PSGs diagnose is uncomplicated sleep apnea, which can alternatively be diagnosed using a home sleep test.

Find out how BresoDx® works as the home sleep test here .