Sleep Study Scoring

This field of sleep disorders and treatment can be overwhelming. It is our goal to provide you with the knowledge and resources to make it simple.

You just had your sleep study…now what. A technologist, or RPSGT (Registered Polysomnographic Technologist) needs to score it. Scoring is just the act of reviewing the raw data that was recorded during your sleep study. This takes quite a bit of time since a standard sleep study is about 1000 pages of data. Each page has 30 seconds of recording time. These pages are called epochs in sleep medicine.

Scoring typically consists of two passes, or going through all the data twice. The first time you are staging the recording. Each epoch is assigned a different value: Wake, Stage N1, Stage N2, Stage N3, or REM. This is done by looking at the EEG (brain activity) of the patient using rules set forth by previous sleep research done by Rechtschaffen and Kales. This research is now adopted by the AASM (American Academy of Sleep Medicine).

The next pass the scorer will look at 4 epochs at a time and tally up any abnormal breathing events (such as Obstructive Sleep Apnea) and awakenings. EKG is also looked at as well as limb movements.

Once scoring is complete, a report is generated and given to a sleep specialist for their interpretation and recommendation of the data.

Check out the video below to see me scoring some patients. I hope to re-record these soon so that it is a little easier to see. This is all I have for now.

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