Surgery dramatically lowers blood pressure
A California company has shown how to dramatically lower blood pressure in hard-to-treat patients by destroying tiny nerves in the kidney.
The nerves are located inside the main arteries leading to the kidney. They affect blood pressure by controlling the release of sodium and an enzyme called renin, and by managing blood flow from the kidneys themselves.
The procedure was developed by Ardian, a medical device company based in Mountain View, California. Previous studies have shown that these nerves are overactive in many people with high blood pressure, says Murray Esler, who led the new research. By destroying these nerves in about 50 people, Esler could reduce those patients' uncontrolled high blood pressure by nearly 30 percent.
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