Sleep Center

Northfield Hospital’s Sleep Center can help put the good back in your morning! Consult your healthcare provider to see if a sleep study may be appropriate for you. For more information, contact us at 507-646-1099.

The Sleep Center features two sleep suites that promise a hotel-like experience. The rooms are climate controlled with comfortable Sleep Number double beds, as well as special lighting to replicate patients’ sleeping conditions at home. A new larger space and various enhancements improve the Center’s capacity to conduct sleep studies, allowing for more precise testing, tailored to the patient’s condition. The new center also accommodates daytime testing.

Northfield Hospital’s Sleep Center uses state-of the-art equipment and best practices to monitor sleep patterns in real time. The testing is done over an eight- to nine-hour period, typically beginning around 8 or 9 p.m. A sleep study technician arranges the sensors to monitor heart rate, oxygen levels and eye movement while the patient sleeps, then monitors him or her from a workstation outside the sleep suite. Patients are usually able to leave by 5 or 6 a.m., and can grab a quick snack from the breakfast bar before departing.

One in four patients is at risk for sleep disorders, with 90 percent of those still unidentified. Through clinical study, we help patients uncover their specific barriers to sleep. Nutrition therapists at Northfield Hospital & Clinics provide education and counsel on nutrition and weight-loss strategies. Kristi Von Ruden, RD, LD; Courtney Eby, RD, LD; and Kristi Winkels, RD, LD, can be contacted at 507-646-1410. We also provide follow-up care to manage sleep disorders and help patients receive restful sleep and regain control of their lives. Speak with your health care provider about your sleep concerns.

Sleep Center services at Northfield Hospital are provided in partnership with Precision Diagnostic Services (PDS), Inc. For more information, contact us at 507-646-1099.


A widely accepted treatment for obstructive sleep apnea is positive airway pressure therapy, which includes using a bedside device to deliver pressurized air through a small mask or nasal pillow system. The device is called a Continuous Positive Airway Pressure system – CPAP for short.

Regular use of CPAP therapy can dramatically improve the quality of rest, but it doesn’t always happen overnight. That is why we’ll be here each step of the way, guiding you through a phased approach to better sleep.

About Sleep Disorders

43 million Americans suffer from sleep disorders constantly leaving them feeling tired. There is hope. Sleep disorders can be treated. At Northfield Hospital, our medical professionals focus on helping patients to identify and overcome sleep disorders.

In a given night, a person with obstructive sleep apnea may stop breathing 20 to 60 or more times per hour. In addition to these events, people may experience snoring, gasping or choking sensations, excessive daytime sleepiness, or early morning headaches. When breathing stops during the night, the sleeper is awakened just enough to inhale and resume breathing, often without being aware of the sleep disruption. In fact, most people with sleep apnea may be unaware of the problem.

Early recognition and treatment of sleep apnea is important because it is associated with irregular heartbeat, high blood pressure, heart attack, stroke, obesity and sexual dysfunction.

More information about healthy sleep and sleep disorders, please visit the National Sleep Foundation’s website at

Bryan Hoff, MD
Bryan Hoff, MD
Gerard O’Halloran, MD
Gerard O’Halloran, MD
John Noack, DDS
John Noack, DDS