Polysomnography is a special study of your sleep. It records your brain activity, eye movements, breathing, heart rate, oxygen level, and chin and leg muscle movement patterns.
For the sleep study, you will spend the night at a sleep center. The study has little to no discomfort, and it will last for at least six hours.
The sleep study will help your doctor tell if you have a sleep disorder. He or she will order this test to:
When you arrive for your sleep study the technologist will apply adhesive patches and sensors to your skin. Each patch and sensor has a wire that connects to a recording device. The recorded information will be sent to a computer for review.
Information being collected includes the following.
An audio/video camera on the wall will record the sounds in your room, your sleep positions during your sleep and the different movements you make.
A technologist will be in a control room with the monitors and computers that record your sleep. He or she will be available to help you at any time during the sleep study. There is an intercom/microphone in the room to let you communicate with the technologist during the test.
A Home Sleep Apnea Test is a much more limited version of the Polysomnogram. During this test, we only measure things related to your breathing. Airflow, respiratory effort, heart rate, snoring and oxygen levels are measured. But, face and leg activity, eye movements and brain activity are
Since the amount of equipment is significantly reduced, patients (after some brief instruction) are able to put their own monitors on themselves. You meet with one of our sleep testing experts, who will teach you how to use the equipment. You bring it home, put it on and return it the next business day. While
you sleep, it will record your breathing pattern. The sleep testing experts will then download the data you have collected and submit it to our sleep medicine physicians for their expert review.
Allina Health's Patient Education Department, Polysomnography (Sleep study), neuro-ahc-23688
Michael Schmitz, PsyD, LP, CBSM, and
Andrew Stiehm, MD, Allina Health