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by Stuart A

(Polysomnogram; Overnight Sleep Study; Rapid Eye Movement Studies)


Reasons for Test

This study can evaluate sleeping problems, such as:

What to Expect

Prior to Test

Before the test, you may be asked to do the following:
  • Wash your hair, but do not use any sprays, oils, or conditioners.
  • Eat a normal dinner the night of the test.
  • Do not drink alcohol or caffeinated beverages or take any sleeping aids before the test.
  • Bring any medications you are taking. When making the appointment for the sleep study, ask if you should keep taking your medications in the days before the test.
  • Bring comfortable pajamas and a bathrobe to wear.

After Test

Your sensors will be removed in the morning. In most cases, you will be able to go home.
After the procedure, be sure to follow your doctor's instructions.

How Long Will It Take?

About 10-12 hours

Will It Hurt?



Results from this test may be ready right away. If not, then they are most often available within two weeks. Any abnormal breathing or leg movements during sleep will be noted. Your doctor will review the results and discuss them with you.


American Academy of Sleep Medicine

National Sleep Foundation



Better Sleep Council Canada

Canadian Sleep Society



Polysomnography. Boston Children’s Hospital website. Available at: Accessed August 5, 2013.

Polysomnography. KU Medical Center website. Available at: Accessed August 5, 2013.


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