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Rheos: An Implantable Carotid Sinus Stimulation Device for the Nonpharmacologic Treatment of Resistant Hypertension

Ng, Maria M. MD*; Sica, Domenic A. MD; Frishman, William H. MD

doi: 10.1097/CRD.0b013e3181f87921
Devices to Treat Hypertension

Hypertension is a highly prevalent disorder in the United States. Of particular concern is resistant hypertension, which by definition is hypertension that cannot be adequately treated by conventional 3-drug regimens. The Rheos Baroreflex Hypertension Therapy System is a new implantable device that can treat patients with hypertension resistant to multidrug therapy, by activating the carotid baroreflex through electrical stimulation of the carotid sinus wall. Recent studies in both normotensive and hypertensive canine models have demonstrated sustained and clinically relevant reductions in arterial pressure and sympathetic activity with prolonged baroreflex activation. Clinical trials designed to evaluate the efficacy and safety of this therapy in patients with treatment resistant hypertension, are now ongoing in both Europe and the United States.

From the *Department of Medicine, Ronald Reagan-UCLA Medical Center, UCLA School of Medicine, Los Angeles, CA; †Department of Medicine, Virginia Commonwealth University Health System, Richmond, VA; and ‡Department of Medicine, New York Medical College/Westchester Medical Center, Valhalla, NY.

Correspondence: William H. Frishman, MD, Department of Medicine, Munger 263, New York Medical College, Valhalla, NY 10595. E-mail:

© 2011 Lippincott Williams & Wilkins, Inc.