What Happens During a Sleep Evaluation

You will spend one night sleeping in a private room with a comfortable bed, TV, nightlight, your own bathroom and shower facilities. Some people may need to stay two non-consecutive nights, but typically, you will arrive in the evening and leave the following morning; it is usually not necessary to miss a day of work or school.

A sleep study at Beaumont Sleep Evaluation Services is a comprehensive, safe and painless procedure that measures brain activity, eye movement, heart rate, pulse, blood oxygen levels, snoring, breathing and airflow, and body movements while you sleep. Highly skilled and trained specialists monitor your data throughout the night. The data is then reviewed by a physician and the results are provided to you and your physician in a timely manner.

What is a polysomnogram?

A polysomnogram is a procedure which measures bodily functions during sleep. Each study will vary depending on the individual case and some of the measurements taken may include:

  • Brain Waves (Electrodes placed on the scalp)
  • Heart Beats (Electrodes placed on the chest)
  • Eye Movements (Electrodes placed above and below the eyes)
  • Muscle Tension (Electrodes placed on the chin)
  • Leg Movements (Electrodes placed on the lower leg)
  • Airflow Breathing (Sensor placed underneath the nose)
  • Chest and Abdominal Breathing (Sensors placed around the chest and abdomen outside of your pajamas)
  • Blood Oxygen Levels (a small sensor attached/taped to your finger)

Why record all these things?

During sleep, the body functions are different than while awake. Disrupted sleep can disturb daytime activities and sometimes medical problems during sleep involve a risk to basic health.

How can I sleep with all these things on me?

Surprisingly, most people sleep reasonably well. We are only looking to obtain a sample of your sleep. The body sensors are applied so that you can turn and move during sleep. None of the electrodes break the skin. The entire procedure is painless. Our staff will try to make your sleeping environment as comfortable as possible.

Will the sensor devices hurt?

No. Sometimes, in rubbing the skin or putting on the electrodes, there are mild and/or temporary skin irritations. You may also feel a sensation of warmth where the oxygen-measuring device contacts the skin of your finger. However, these do not generally cause any significant discomfort.

Will I be given a drug in the sleep lab to help me sleep?

IMPORTANT: PLEASE DO NOT STOP ANY OF YOUR MEDICATIONS WITHOUT FIRST CONSULTING YOUR PERSONAL PHYSICIAN. Your doctor may instruct you to stop taking certain medications before coming for the test. It is also important not to consume any alcohol or caffeinated beverages on the day of the testing.

Technologists do not have sleeping aids available.

What should I bring?

Checklist of items to bring to the sleep lab:

  • Wear loose comfortable bed time clothing, such as 2 piece pajamas, or shorts.
  • A robe.
  • Slippers.
  • Completed Questionnaire/Sleep Diary.
  • Bring all your medications to the lab. We do not dispense medications.
  • Your ID

We also suggest to bring the following:

  • Tooth brush and paste, shampoo, shower soap.
  • Favorite pillow.
  • Book to read.
  • CPAP machine and mask if currently using therapy.

Beaumont Sleep Evaluation Services provides free, wireless web access (Wi-Fi) to all visitors and patients. Users must agree to the terms and conditions of usage before accessing our network and must have their own equipment and software. Beaumont is not be responsible for lost or stolen equipment and is also unable to provide support for equipment or to troubleshoot wireless connections.

What happens after the polysomnogram?

On the morning following your test, a preliminary report is sent to the doctor who ordered the test. However, your doctor may decide to wait until he/she receives the final report (in about ten days) before issuing recommendations. You will also receive instructions the morning after your study from the sleep lab personnel.Technologists do not have test results after test is complete.

1. Hair - Wash your hair prior to coming and do not put spray or oil, etc. on it. (In order to work properly electrodes must be applied to clean and dry skin.)

2. Food -Eat a good meal prior to (PSG), but avoid food that would cause heart burn, acid indigestion. No chocolate.

3. Drink -No alcohol or caffeinated beverages for 24 hours prior to testing because they can affect test results.

4. Medications

  • Bring all your medications to the lab. We do not dispense medications.
  • Please do not stop any medication without first consulting your personal physician.
  • We prefer you to be off sleeping medications for at least 8 days prior to this sleep study. Please check with your doctor.

5. Complete Sleep Diary at home for 14 days prior to testing, if possible.

6. We will provide towels, shower and toilet facilities.

7. Nail polish or acrylics may affect test. Please remove prior to testing.

MSLT Test Instructions

The MSLT study usually follows the overnight PSG study. This daytime study takes up to additional 8 - 10 hours. Thus your stay in the sleep lab for the combined PSG and MSLT may last up to 21 hours. You will have to bring your own supply of medication and food. A refrigerator and microwave are available.