Sleep Related Topics

Sleep and Wellness
Sleep Apnea
Snoring Is Not Funny
Not Enough Sleep
Restless Legs Syndrome (RLS)
What Is Parasomnia?
Sleep and Children
Sleep Hygiene
Sleep Study Procedure (PSG)
CPAP Titration
Actual Sleep Study

Sleep Study Procedure (Polysomography/PSG)

The patients referred to our Sleep Center are evaluated for Different sleep diagnosis and ultimately a proper treatment for their sleep problem.  Most of these patients suffer from sleep apnea.  We routinely also test patients for other sleep disorders such as narcolepsy and restless legs syndrome with its effect on patient’s quality of sleep.  The normal process for sleep studies in our center is as follows:

You arrive in our center between 8 and 9 PM and are greeted by our Sleep Technologist.  Pre-study paperwork will be reviewed and our Technologist can assist you in completing this essential information.  You are given a tour of the facility, and escorted to your private Sleep Study bedroom.

It usually takes about 45 minutes to apply and prepare the patient for Sleep Study.  The Technologist will explain all the steps that you are required before Sleep Study is initiated.

The following information is obtained by applying different electrodes in order to obtain, process, and evaluate your sleep disorder in a complete and proper fashion, and so a diagnosis can be given and treatment can be initiated.

The following electrodes are applied in order to monitor your sleep. 

  • 6 channels of brain waves are obtained by applying electrodes over your skull.  This is a painless procedure and it will require a special surface electrode which is held to your skull by a special gel.
  • Eye movement electrodes are applied above your eyebrow and below the corner of your eye.  This is essential for monitoring the eye movements during your sleep.
  • Chin electrodes are applied around your chin region in order to assess the muscle activities of your chin during your sleep.
  • A nasal airflow device will monitor your airflow through your mouth and through your nostrils.
  • Abdominal and chest movements are obtained by applying comfortable band around your chest and abdomen.
  • EKG for monitoring your heart throughout your entire sleep.
  • Leg Movements (EMG): These are usually applied on the legs, but can be applied on the arms as well for assessing your body’s movements during sleep.
  • Oxygen Level: Constant level of oxygen is monitored to assess your body’s oxygenation throughout your waking and sleep time.
  • Body Position Electrode:  This will allow us to see in what position you sleep, and, at times, we may ask you to sleep on your back to get a better assessment of your sleep.

About 7-9 hours of data are collected while you are sleeping during the night.  It is very easy to use your private bathroom by disconnecting the main cable from the monitoring box, and you can move around and go to the bathroom without any difficulty. 

In the morning, after sufficient sleep is obtained, the Technician will wake you up and detach these electrodes from your body by cleaning your head, face, and cleaning all the areas that are needed. 

A post study questionnaire will be requested to be completed by the patient in order to assess the patient’s sleep and also the patient’s satisfaction while they are staying in our Center.

The data is stored in our computer and is initially used by Chief Technologist then later on it is interpreted by our Sleep Specialist Physicians. 

The review of this many hours of information is done by looking at every page of sleep in 30-second intervals and the patient’s brain activities, airflow, movement of the chest and abdomen, body movement, oxygen level, and EKGs, are scored and assessed by the Specialists.

The finalized Sleep Report can be faxed to the referring physician as well as the information can be mailed to the patient’s physician.

At the request of the referring physician, a patient can have a consultation in our Center for a review of his or her Sleep Study.
>> Common Sleep Disorders >> Frequently Asked Questions

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