A Sleep study (polysomnography) is a diagnostic procedure test of the sleep. It shows breathing, oxygen and brain activity during sleep. No ionising radiation when done without X-ray guidance.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Breathing, oxygen and brain activity during sleep.
Loud snoring with pauses, daytime sleepiness.
Follow the centre's instructions; most need no special preparation.
No ionising radiation when done without X-ray guidance.
overnight. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Diagnostic procedure
Consult a doctor to interpret results — a single test does not make a diagnosis.
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What does a polysomnography show?
Breathing, oxygen and brain activity during sleep.
Why is a polysomnography done?
Loud snoring with pauses, daytime sleepiness.
How do I prepare for a polysomnography?
Follow the centre's instructions; most need no special preparation.
Does a polysomnography use radiation?
No ionising radiation when done without X-ray guidance.
How long does a polysomnography take?
overnight
Why is Sleep study (polysomnography) done?
Loud snoring with pauses, daytime sleepiness.
How do I prepare for Sleep study (polysomnography)?
Follow the centre's instructions; most need no special preparation.
Is Sleep study (polysomnography) safe in pregnancy?
No ionising radiation when done without X-ray guidance.
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