Sleep Disorder Diagnosis

Ridgeview Sleep Disorders Center offers three main types of testing: overnight sleep study/polysomnogram (PSG), home sleep tests and multiple sleep latency tests (MSLT).

Overnight sleep study/Polysomnogram (PSG)

To aid in diagnosis of a sleep disorder, most patients will need an overnight sleep study called a polysomnogram (PSG). During the sleep study, polysomnographic technologists attach a variety of devices to the patient, to observe the patient’s sleep patterns. The devices monitor brain waves, heart rate, eye movements, airflow and leg movements.

Sleep studies are conducted at Ridgeview's Sleep Disorder Center in Waconia. The Sleep Center operates four uniquely equipped sleep rooms, warmly decorated to simulate a hotel suite for optimal sleep comfort. All testing personnel are registered polysomnographic technologists.

Home Sleep Test

Some people, depending on their existing medical conditions and the severity of symptoms, may have the option of participating in a sleep study at home. For the at-home test, a portable device is used to test specifically for sleep apnea and cannot detect other sleep disorders. A sleep technologist will instruct the patient how to use the device. The patient may need to sleep with the device for one to three nights, depending on the device your doctor orders. The device is then returned to the sleep center. Note: Not everyone qualifies for the at-home test, and your insurance company may have specific guidelines.

The Sleep Center’s physician, Dr. Ravi Vaela, MD, will discuss the different testing options for sleep apnea with you. Following a sleep study, the patient is scheduled to meet with Dr. Vaela for a follow-up consultation. He reviews the results of the study and develops a treatment plan. Treatments may include Continuous Positive Airway Pressure (CPAP), oral appliances, surgical procedures or medication.

Multiple Sleep Latency Test (MSLT)

Other patients may require a Multiple Sleep Latency Test (MSLT), which evaluates a patient’s level of sleepiness.

PSGs and MSLTs are performed by highly trained technologists, who will monitor and record a patient’s parameters including brain waves, eye movements, oxygen saturation, respiratory effort, airflow and leg movements. PSG and MSLT results are reviewed by the Sleep Center’s physician, Dr. Ravi Vaela, and shared with the patient. A formal analysis report, including the patient’s diagnosis and treatment recommendations, is forwarded to the patient’s referring physician. Long-term management is usually done by the referring physician. Some of the treatments may include Continuous Positive Airway Pressure (CPAP), oral appliances, surgical procedures or medication. CPAP equipment can be purchased or rented through Ridgeview Home Medical Equipment, located at 141 W. First Street, Suite 300, in Waconia.

To participate in a sleep study at the Ridgeview Sleep Disorders Center, patients must be 16 years or older and referred by a physician.


Insurance reimbursement is available in most cases. For questions on exact payments, please contact your insurance company. Patients will be referred to an appropriate provider if insurance coverage does not apply.

If a referral is needed

If your physician needs a referral form, please call 952-442-8080, or 1-800-967-4620. Physicians may schedule patients directly by calling 952-442-8080.

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