The diagnosis of obstructive sleep apnea is relatively straightforward, based on risk factor, sleep history and an overnight sleep test called polysomnogram. Polysomnography is performed in a sleep laboratory under the direct supervision of a trained technologist. During the test, a variety of body functions are recorded during sleep, such as the electrical activity of the brain, eye movements, muscle activity, heart rate, breathing patterns, airflow and blood oxygen levels.
The test analyzes sleep quality over the course of a night, providing data related to the number of sleep apnea events, deep-sleep duration, occurrences of sleep movement and blood oxygen levels, all which can offer a clearer picture regarding the condition’s severity.