Multiple studies have shown a link between sleep apnea and hypertension (high blood pressure). Additional studies have shown that reducing the symptoms of sleep apnea significantly reduces blood pressure.

The most common form of treatment for sleep apnea is use of a continuous positive airway pressure (CPAP) device. A CPAP delivers pressurized air through a mask while the patient is sleeping. This pressurized air keeps the airway open and allows the patient to breathe normally.

In a study presented to the American Thoracic Society International Conference, researchers investigated 26 patients who were diagnosed with moderate to severe sleep apnea. The patients were randomly given a CPAP device, a fake CPAP device or supplemental oxygen through a face mask to use while sleeping. The patients were also hooked up to an ambulatory blood pressure monitor that measured their blood pressure at regular intervals 24 hours a day.

There have been conflicting theories as to why sleep apnea increased blood pressure. Some theorize that it is due a drop in oxygen level as a result of the apnea. This study found that there was no benefit to blood pressure levels as a result of the nighttime oxygen supplement. In fact, the only the CPAP provided a significant reduction in blood pressure.

In another study conducted at the Valme University Hospital in Sevilla, Spain, doctors monitored blood pressure changes in 55 patients who were treated with CPAP over a 2 year period. The patients used the CPAP for an average of 5.3 hours per day. The researchers found that those patients that regularly used the CPAP, and initially had higher blood pressure levels, achieved significant reductions in their blood pressure.

Here is a typical CPAP device:

Polaris EX CPAP w/ SoftX CPAP w/ Twilight mask StandardDesigned to increase patient compliance, unit is equipped with a revolutionary technology called SoftX, named after the soft exhalation sensation it creates. SoftX makes breathing with CPAP feel natural and more comfortable for patients. It is possible to set the unit as a standard CPAP. Simple contour design and silver color provide a contemporary style to appeal to patients and fit nicely in their homes. Touchpad, located at the top of the unit, provides convenient access to simple operation and set up for both patients and clinicians. Quick compliance information includes: average number of hours per day, percentage of compliance and the number of days the unit has been tracking. Washable, easy to clean reusable filter. Designed to be integrated for use with the Invacare Polaris EX Heated Humidifier. Dimensions: 8.5″l x 9″w x 5.2″h. Product Weight: 4.2 lb. 2 year limited warranty. Delivered discreetly to your home. Medicare Billing Code

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