A sleep study, or polysomnography, is a comprehensive test that records various physical activities while you sleep, including brain activity, eye movements, muscle activity, heart rate, breathing, and blood oxygen levels. It helps diagnose sleep disorders.
You might need a sleep study if you have symptoms of a sleep disorder such as snoring, excessive daytime sleepiness, insomnia, restless legs, or pauses in breathing during sleep.
Sleep studies can diagnose conditions like obstructive sleep apnea, central sleep apnea, narcolepsy, restless legs syndrome, periodic limb movement disorder, and REM sleep behaviour disorder.
Results from a sleep study are analysed by a sleep specialist to diagnose any sleep disorders. Based on the findings, your doctor will recommend appropriate treatment or further evaluation.
