Looking for something?

Find it in our extensive resource library!

Smart Filters

  • Reset
  • Services

  • Who it's for

  • What it’s about

  • Format

View: 88

Download: 8

Cardiorespiratory polysomnography sleep study

What is cardiorespiratory polysomnography?

Cardiorespiratory polysomnography is a non-invasive sleep study. It measures your child’s breathing, oxygen levels, snoring and movement whilst your child is asleep.

It is usually performed to try and find out if someone is breathing normally when asleep.

Photograph of child sat with cardiorespiratory sensors attached to them

What does the study involve?

You will be welcomed to the Sleep House and shown to your bedroom. After settling in, a member of staff will go through some paperwork with you. Once your child is ready for bed, staff will attach the following sensors to your child:

  • a soft probe wrapped around your child’s toe to measure the oxygen levels
  • 3 stickers on your child’s chest to measure heart rate
  • a warm sensor that is stuck onto the chest or earlobe to measure carbon dioxide levels
  • a sensor on your child’s neck to record snoring
  • 2 soft stretchy bands around the chest and tummy to measure the effort of breathing
  • a body position sensor which sits on top of the stretchy bands to measure body position
  • 1 or 2 sensors which sit just above the upper lip to measure the air breathed in and out

It may take up to 20 minutes to apply all the sensors. After these have been attached, staff will check the signals are working and then you and your child will be left to settle and go to sleep.

Overnight staff will monitor the signals on a computer screen and also video your child with your written consent. Staff may come in overnight to reattach sensors if signals are lost.

Photograph of child asleep with cardiorespiratory senses attached to them

How long does it take?

It only lasts 1 night, and you and your child can go home first thing the next day.

Are there any risks?

These sensors are not painful, however some children and young people may find it upsetting to have these sensors attached. We will work closely with you and your child to successfully apply these sensors.

What happens afterwards?

When your child wakes up and the study has finished, the sleep staff will remove your child’s sensors. We will then discharge you home promptly. The latest you can leave the sleep house is 7.30am. Your child can then go about their day as normal.

When will I get the results?

The sleep physiology staff will pass the data onto the sleep and respiratory team. The sleep and respiratory consultant will then look at the results and they will be discussed either at your next clinic appointment or the results will be sent to the referring doctor.


Results will not be available during your stay with us. It can take a few weeks to get the results.

Contact us

If you have any questions or concerns you can speak to the sleep physiology team on 0114 305 3042. Please leave a message on our answer phone and we will get back to you as soon as possible.

If you are unable to come in for this appointment, please contact the bookings team on 0114 226 0698 to rearrange a new date. We would really appreciate you letting us know as soon as possible if you are unable to attend, so we can offer the slot to another patient on our waiting list.

The Sleep House, 20 Claremont Crescent, Sheffield, S10 2TA

Is something missing from this resource that you think should be included? Please let us know

Contact us


Please note this is a generic information sheet relating to care at Sheffield Children’s. The details in this resource may not necessarily reflect treatment at other hospitals. This information is not intended as a substitute for professional medical care. Always follow your healthcare professionals’ instructions. If this resource relates to medicines, please read it alongside the medicine manufacturer’s patient information leaflet. If you have specific questions about how this resource relates to your child, please ask your doctor.

Resource number: SLP2

Resource Type: Article

How useful did you find this resource?*


Western Bank
S10 2TH

United Kingdom

Switchboard: 0114 271 7000

Interesting Facts

We’ve got a special MRI scanner just for teddies so children can see what it’s like before they have a scan.

Help to transform our extraordinary hospital into something even better.

Sheffield Children's@SheffChildrens
Meet Nieve! 💙 Nieve is a footballer and recently got a scholarship to go to America and develop her skills. When N… https://t.co/xnjk6zeBCc

As of 6 July 2022 everyone (colleagues, patients and families) must wear a mask. This applies to all spaces across. all sitesMore information on how we are keeping you safe is available here.

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.