A technique that uses radio waves to burn nerves around the kidneys may be a way to permanently lower blood pressure, though how it works is unclear - it may reconfigure the body’s blood vessels or affect hormone systems in the kidneys.
For decades, the kidneys’ nerves have been known to regulate blood pressure. So-called renal denervation involves inserting a catheter into the thigh’s femoral artery to access the arteries that feed the kidneys. Applying radio wave pulses burns the nerves in the artery walls, reducing their activity.
at Saarland University in Saarbrücken, Germany, and his colleagues looked at 80 people who had high blood pressure, despite taking antihypertension drugs. Thirty-eight of the participants underwent renal denervation and 42 had a sham procedure, acting as the control group.At the start of the study, all the participants’ systolic pressure – the force at which the heart pumps blood around the body – was between 150 millimetres of mercury and 180 mmHg. Anything above 140 mmHg.
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