Frequently Asked Questions
about Sleep Testing

What happens during the test?
How is Polysomnography performed?
How do I prepare for Polysomnography?
Is Polysomnography painful?
Why polysomnography?
How long does Polysomnography take?
What is Polysomnography?

What happens during the test?
You will be in a room by yourself and asked to sleep on a bed
A technologist monitors the recordings in another room
An intercom is available so that you may call the technologist at any time

How is Polysomnography performed?
A technologist measures your head so that all attachments fit comfortably
Soft, red pencil marks are made on your scalp where electrodes will be placed
Several electrodes are places on your chest and legs
Electrodes are glued to your scalp and skin with an air blower
Special jelly is applied to each electrode. Nothing goes into or under your skin.
Each electrode connection is checked with a meter to insure that it is working properly
An elastic belt is placed around your chest to measure your breathing
Heat-sensitive wires are placed by your nose and mouth to monitor air flow during breathing
A probe is taped to your finger to measure the oxygen saturation of your blood

How do I prepare for Polysomnography?
Come in for the test at your scheduled time.
Bring all medications you are currently taking with you when you come for the test. You may continue taking all medications, unless your doctor gives other instructions.
Bring suitable nightware such as pajamas and a bathrobe
Eat supper as usual the night of the test.
Wash your hair before coming for the test. Do not apply sprays, oils, or dressings of any kind.

Is Polysomnography painful?
No. You will experience no pain or discomfort associated with the test.

Why polysomnography?
Polysomnography helps evaluate the cause of excessive daytime sleepiness, insomnia, or unusual spells occurring during sleep.
• sleep apnea (disturbances of breathing during sleep)
• narcolepsy (sudden and uncontrollable onsets of sleep)

How long does Polysomnography take?
In order for your sleep study to be accurate and comprehensive the technician will need at least 6hrs of recorded sleep time. Depending on your sleep habits and specific sleep disturbance, this may take 8 or 9 hours to achieve. Plan on spending the entire night at the sleep center to ensure you are comfortable and we achieve optimal study results.

What is Polysomnography?
Polysomnography is an all-night sleep study where a technoligist monitors and records various physical functions during sleep. The Recording includes...
• Electrical activity of your heart
• Brian wave patterns
• Eye movement
• Muscle tone
• Body movements
• Breathing