What is a Sleep Study?
A sleep study is also known as polysomnography. Polysomnography is a testing procedure that measures a variety of physical activity and brain functions during a sleep session. During these sleeping sessions, the Indiana Sleep Center’s highly trained technicians will monitor a variety of body functions. Each individual test is personalized and may include each and any of the following measurements.

  • Brain Wave Activity
  • Heart Rhythms
  • Eye Control
  • Tone in Muscles
  • Grind or Clenching of Teeth and Jaws
  • Snoring
  • Leg Movements
  • Airflow through Nasal or Mouth
  • Effort in Breathing
  • Oxygen Levels in the Blood

Each of these signals are measured through non-invasive devices such as electrodes and sensors placed on various parts of the body. There isn’t any pain involved in any of these tests. The testing devices are attached to the skin of the patient with paste or tape. In rare occurrences, a mild skin irritation may occur from the adhesives. Skin sensitivities to paste, tape or latex materials must be disclosed prior to overnight monitoring.

Why is Monitoring Important?
Sleep disruptions can affect a patient’s daily life. Disturbances in sleep patterns can be a sign of specific medical conditions that only occur during sleeping sessions. Our board certified trained staff monitor a variety of brain functions and activities during sleep sessions to focus on a patient’s sleeping patterns to determine if there is a larger medical condition at stake. By doing this, a professional diagnosis is made and can help a patient lead a comfortable and refreshed life.

What is the duration of a polysomnogram?
In order for the procedure to be considered valid, a minimum recording time of 6 to 7 hours is required. However, the exact duration is determined by your technologist.

How will I sleep with all of these things attached to me?
Not surprisingly, this is the most commonly asked question! However, most people sleep quite well. The body sensors are applied so that you can turn and move as needed for optimal comfort. Generally, you will not be aware that you are wearing the devices after they are on for a short period of time. Our staff will make every attempt to make the environment as comfortable as possible and ease any concerns you may have. Remember, we are simply recording your sleep patterns, something you do every night.

What should I bring?
You should bring the following:

  • Something comfortable to wear to bed
  • Something to read or work on while you are awake
  • Personal toiletry items
  • Any medications you are presently taking or have taken during the last two weeks
  • The completed questionnaire included with this information
  • You may want to bring your own, favorite pillow or pillows

Will the sensors hurt?
No. The sensors are all non-invasive, meaning we do not “stick” you with any needles and simply attach the leads with glue or tape. Rarely, a mild and temporary skin irritation may occur with the skin-surface preparation process. If you have heightened skin sensitivities, please let the technologist know before they begin to apply the necessary leads.

Will I be given a drug to help me sleep?
No. In fact, we prefer you to continue your routine drug regimen as prescribed by your physician. It is important not to consume any alcohol or caffeine after twelve noon on the day of your testing.

Is this procedure covered by my insurance?
Each respective policy is different. The physician ordering the test will need to provide us with your medical history and an order for the appropriate test. When you are pre-registered, the secretary will obtain insurance information. All of this data is necessary to complete any pre-certification requirements. We encourage all of our patients to review their policies and determine the percentage of coverage for out-patient diagnostic procedures.

What is a PAP Titration?
A PAP Titration is Polysomnography with the application of Positive Airway Pressure via a nasal and or oral mask/interface. This is a therapeutic procedure that in general is used to treat airway obstruction including apnea.

What is a Home Sleep Apnea Test?
The Test is an abbreviated version of the Polysomnography detecting only respiratory flow, effort and oxygen level. The patient is in-serviced on the testing device which the patient utilizes in their home.

What is a Multiple Sleep Latency Test (MSLT)?
An MSLT is a series of 5 naps during the day following Polysomnography. This test assesses daytime sleepiness and may assist in the diagnosis of narcolepsy.

What is a Maintenance of Wakefulness Test (MWT)?
An MWT is a series of 4 four trial opportunities during the day generally following Polysomnography. The test is used to objectively quantify daytime alertness.