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Sleep Center

The Sleep Disorders Center has moved to:
Heritage Commons
14600 Farmington Rd, Suite 101
Livonia, MI 48154

St. Mary Mercy Hospital in Livonia, MI is pleased to offer sleep diagnostic testing to our patient community six days a week with capabilities of performing four tests per evening. We are accredited by the American Board of Sleep Medicine, and staff only Registered Polysomnographic Technologists to obtain the highest quality recordings. We boast three staff physicians certified by the American Board of Sleep Medicine specializing in both Critical Care Pulmonary Medicine and Neurology. Testing is offered not only during the night but is also available during the day for shift workers to accommodate all patients' schedules. St. Mary Mercy Livonia Hospital offers a wide variety of tests including:

For more information, contact:

Gayle Young, RPSGT, RST
Office/Technical Coordinator

Sleep Disorders Center
Phone: 734-655-4640
Fax: 734-655-2744

  • Baseline Polysomnogram (PSG)
  • Continuous Positive Airway Pressure (CPAP)
  • Multiple Sleep Latency Test (MSLT)
  • Maintenance of Wakefulness Test (MWT)

To further accommodate the referring physician we offer direct referral or the opportunity to refer the patient for a sleep consultation and care.

We pride ourselves on excellent patient care, physician interaction, and continued improvements based on community needs.

Virtual Tour
Sleep Disorders Center Patient Room

What We Do

Baseline Polysomnogram (PSG):

A baseline polysomnogram or “overnight sleep study” is a test designed to monitor the patient’s physical state during sleep. The test monitors extensive parameters including, brainwave activity, respirations, limb movements, oxygen levels, EKG, and others.

Continuous Positive Airway Pressure (CPAP):

This sleep study documents evidence of “sleep related disordered breathing,” a second sleep study is usually ordered to evaluate the effectiveness of PAP (Positive Airway Pressure) therapy.

Multiple Sleep Latency Test (MSLT):

MSLTs are studies designed to evaluate the patient’s degree of sleepiness or the ability to remain awake. Both tests are performed following an overnight sleep study.

Maintenance of Wakefulness Test (MWT):

The Maintenance of Wakefullness Test of MWT, is an evaluation of the patient's ability to maintain wakefulness for 20 minute periods in a quiet, darkened room with the patient in a reclined position.

Why Do I Need a Sleep Study?

Many different events occur in the brain and body during sleep. In order to understand your sleep and any potential problems, we need to look at various brain activities and body systems and their relationships through the night. After the study, your sleep specialist will review and interpret the record to help you and your doctor understand your specific sleep patterns. Treatment recommendations will be made if evidence of a sleep disorder is found.

A sleep specialist with special knowledge and training in sleep and its disorders interprets information from your sleep analysis. A typical sleep study involves more than 800 pages of different types of data (e.g., brain waves, muscle movements, and eye movements). A representative from the St. Mary Mercy Hospital Sleep Disorders Unit will provide you with a timeline for the delivery of your results.

What to Expect

Your visit to the St. Mary Mercy Hospital sleep disorder unit may be a new experience for you. Please read the following information so you will have a better idea of what to expect.

Sleep is not a simple process. Many parts of the brain control it and influence its different stages. These levels or stages of sleep include drowsiness, light sleep, deep sleep, and dream sleep. We can tell which stage of sleep a person is in by measuring different activities of the brain and body. These activities include brain waves, eye movements, muscle tone, heart rate and respiration.

A sleep study, or polysomnogram, is a recording that contains several types of measurements used to identify sleep stages and classify various sleep problems. Your sleep will be digitally recorded for later review of any abnormalities observed during the study. The sleep technician will let you know when this is done.

The activities that occur during sleep (brain waves, muscles movements, eye movements, breathing through you mouth and nose, snoring, heart rate, leg movements) are monitored by applying small metal discs called electrodes to the head and skin with adhesive. Flexible elastic belts are placed around your chest and abdomen to measure your breathing. A clip that fits on your index finger monitors the level of oxygen in your blood and your heart rate.

These devices are designed to be as comfortable as possible. If you have questions about the application of these electrodes (e.g., hairpieces, beards, prostheses, hearing aids, dentures), please contact your doctor or ask the technician before you arrive at the unit.

How will I be able to sleep in such a different environment with all those wires on me?

This is the question asked most frequently by patients prior to their sleep studies. Many people think a sleep evaluation unit will be cold, bright, and technical. The St. Mary's Hospital Sleep Disorders Unit, however, is very comfortable - something like a hotel room. The technical equipment and technicians will be in a room separate from your sleeping room, and the electrode wires are gathered together in a kind of ponytail behind your head so you will be able to roll over and change position almost as easily as you would at home.

On the day of your sleep study, avoid caffeine (coffee, tea, cola, and chocolate) after 2 p.m., and try not to nap. Before coming to the Unit, wash and dry your hair and do not apply sprays, oils, or gels.

You may feel strange at first with the electrodes on your skin. However, most people do not find them uncomfortable, nor an obstacle to falling asleep. The sleep specialist recognizes that you may not sleep in the Unit exactly as you do at home, but in most cases this does not cause a problem in obtaining the necessary information from your study.

Before coming to the Unit you should pack an overnight bag with anything you will need, as you would for an overnight stay at a hotel or a friend's house. If you have special needs, please advise the Sleep Disorders Unit personnel so they can accommodate you.

What will happen when I arrive at the Sleep Unit?

When you arrive at 8:30 p.m., the technician will great you and show you to your bedroom. The technician will then show you the equipment and answer any questions that you may have. You should inform the technician of any changes in your sleep or specific difficulties that you might not have discussed with your doctor. You will have time to change and get ready for bed as you do at home. If you have a commitment in the morning (for example, if you have to be at work at a certain time), be sure to inform your sleep technician prior to your study, so that a wake-up time can be arranged. You should confirm your desired wake-up time upon arrival at the Sleep Disorders Unit.

While you are sleeping, various important body functions and measurements are recorded. The technician will monitor your sleep from a nearby room throughout the night. If a respiratory or breathing problem is observed during sleep, the technician may awaken you to ask you to try a device that treats breathing problems. Patients are always notified about this possibility before going to bed, and the use and purpose of the device are explained in full on the night of the study.

This device, called a continuous positive airway pressure (CPAP) device, includes a small mask that fits around your nose. If you are unsure whether you will be having a CPAP trial during your study, call your doctor. If you will be trying this device during your sleep study night, the technician will adjust the mask in advance to ensure a comfortable fit and will usually give you a chance to practice with the device before going to bed. You will be able to ask questions about the device and/or your sleep study, and discuss your impressions and the study results with your doctor during your follow-up visit.

What happens if I am scheduled for a nap study?

Your doctor may order an additional test, called a Multiple Sleep Latency Test (MSLT) as part of your overall sleep evaluation. This means that you will need to stay in the Unit for most of the next day for a series of brief naps that begin the morning after your sleepover at the Unit. The naps are scheduled at intervals throughout the day. You will wear most of the same recording equipment you wore to bed the night before.

The amount and type of sleep you get during the naps can help your doctor understand complaints of sleepiness better and make decisions about specific disorders and treatments. Be sure you know whether you will be staying in the Unit the next day so you can plan ahead. Breakfast and lunch will be provided.

Should I take my medications as I usually do?

It is important for your sleep professional to know if you are taking any regularly prescribed or over-the-counter medications since certain medications can affect sleep and the interpretation of your sleep study. Sometimes specific medications are gradually discontinued during the weeks prior to the sleep study in order for the results of your study to be interpreted correctly. It is important that you discuss your medication use with your doctor before your sleep study. Do not discontinue any prescription medication without first talking with your doctor. You should avoid coffee and alcohol on the day/evening of your study.

Sleep Center Physicians

Dr. Michael Gamiao, MD, FCCP
Pulmonary Disease/Critical Care/Sleep Specialist
Sleep Center Medical Director, Board Certified Sleep Specialist
14555 Levan Rd., Suite 404
Livonia, MI 48154
Phone: 734-462-1233

Dr. Mark Villeneuve, MD
Pulmonary Disease/Critical Care/Sleep Specialist
Board Certified Sleep Specialist
Michigan Lung & Sleep, PC
14555 Levan Rd., Suite 202
Livonia, MI 48154
Phone: 734-542-4470

Dr. Punitha Vijayakumar, MD 
Neurology and Sleep Medicine
7300 Canton Center Rd.
Canton, MI 48187
Phone: 313-292-9233
Fax: 313-292-9023

25400 Goddard Rd.
Taylor, MI 48180
Phone: 313-292-9233
Fax: 313-292-9023

Sleep Disorder Links

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St. Mary Mercy Livonia | 36475 Five Mile, Livonia, Michigan 48154 | 734-655-4800