Adults only (18+)

What Is a Sleep Test? Understanding Its Purpose and Process

A sleep test, also known as a sleep study or polysomnography, is a diagnostic procedure used to evaluate sleep patterns and identify disorders that affect sleep quality and health. It provides detailed information about how you sleep, helping healthcare professionals diagnose conditions such as sleep apnea, restless legs syndrome, insomnia and narcolepsy.

How a Sleep Test Works

During a sleep test, you spend a night at a specialised sleep clinic or use portable equipment at home. Various sensors monitor and record different bodily functions while you sleep. These typically include brain activity (EEG), eye movements, heart rate, breathing patterns, oxygen levels, muscle activity and body movements. The collected data helps specialists understand your sleep architecture and identify any abnormalities.

Types of Sleep Tests

The most comprehensive type is an in-lab polysomnography, offering detailed monitoring and immediate support if needed. Home sleep apnea testing is a simpler option, primarily focusing on breathing and oxygen levels, suitable for diagnosing obstructive sleep apnea. Your doctor will recommend the appropriate test based on your symptoms and health history.

Why a Sleep Test Is Important

Sleep tests help diagnose disorders that may cause excessive daytime sleepiness, fatigue, poor concentration or cardiovascular risks. Accurate diagnosis is essential for effective treatment, improving your quality of life and reducing potential complications.

What to Expect During a Sleep Test

If conducted in a clinic, you’ll be prepared by a sleep technician who attaches sensors with minimal discomfort. You’ll sleep in a comfortable room designed to mimic a typical bedroom. The following morning, sensors are removed, and results are analysed by sleep specialists.

In Summary

A sleep test is a valuable diagnostic tool that records various physiological functions during sleep to detect disorders and guide treatment. Whether done at home or in a clinic, it provides insights crucial for restoring healthy sleep.