Sleep Study With CPAP

This test assesses how long and how well you sleep while wearing a mask that delivers pressurized air.

This test assesses how long and how well you sleep while wearing a mask that delivers pressurized air.

A sleep study, also called a polysomnogram, may be done with continuous positive airway pressure (CPAP) to assess the quality of your sleep while you wear a mask that delivers pressurized air to keep your airways open. It may be done overnight in a sleep laboratory, with a technician in attendance.

  • Under certain clinical circumstances, home sleep testing followed by the use of auto-adjusting positive airway pressure (APAP) devices may be an alternative to laboratory adjustment of continuous positive airway pressure (CPAP).
  • You may have a sleep disorder if you have noisy, interrupted breathing while you sleep, extremely restless sleep or if you are tired during the day despite having had an apparently normal night's sleep.
  • Common sleep disorders include obstructive sleep apnea, narcolepsy and periodic limb movement disorder.
  • CPAP or APAP may be part of your testing if obstructive sleep apnea is suspected.

A sleep study can be done at a sleep center or at home; these costs are for a sleep study performed at a sleep center. Your out of pocket costs may be significantly lower if your sleep study is performed at home (an unattended sleep study).

  • Many people can be safely and effectively tested at home. Lab-assisted sleep studies and portable (at home) sleep studies may use different equipment to determine whether you have obstructive sleep apnea. For some people one location may be more appropriate than the other.
  • Ask your healthcare provider if you should take your normal medicines the day of the test. Don't stop taking your medicines unless your healthcare provider tells you to do so.

When performed at a sleep center (an attended sleep study) you should:

  • Arrive a couple of hours before bedtime so that your normal sleep patterns can be studied
  • Bring comfortable clothes or pajamas for sleeping

At the time of the test small electrodes will be placed on your body; elastic straps will be placed around your chest and belly to monitor your breathing and other functions. It may take a while to get used to the mask and the sound of the CPAP machine.

What should I ask my healthcare provider before having my sleep study?

  • Is there any special preparation for the test? (If so, get clear instructions on what you need to do.)
  • What is the reason for the test? If your doctor refers you to a sleep laboratory, ask why testing cannot be done at home.


Also known as:

Sleep Study With CPAP
Sleep Study
Sleep Disorders
Sleep Apnea Test With CPAP
Sleep Apnea
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