Tiny Implantable Device May Effectively Lower Blood Pressure

In early studies, an experimental device resembling a tiny pacemaker has been shown to control blood pressure more effectively than medications. For 10 to 15% of patients with high blood pressure, medications are not helpful.

High blood pressure consists of a reading of 140/90 mm Hg or higher. Also called hypertension, high blood pressure is a major risk factor for heart disease or stroke.


The new “pacemaker-type” device is currently being studied by the chief of vascular surgery at the University Hospital in Berne, Switzerland, in patients who do not respond to available medications.

Surgeons place electrodes outside the carotid artery and implant an internal pulse generator into the chest wall. Using electrical current to stimulate the carotid sinus, messages are sent to receptors in the brain. Preliminary results have shown remarkable results in a swift drop of blood pressure.

The first 16 patients experienced an average drop of 29 millimeters of mercury after receiving the new device. In patients taking drugs, reducing their blood pressure by
9 millimeters is considered an outstanding result. Researchers call the device, developed by Minneapolis-based CVRx, “very promising.”

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