Renal Artery Denervation to Treat High Blood Pressure High blood pressure (BP) is the end result of many factors and results among other things in stroke, heart failure and kidney failure when untreated or inadequately treated. The kidney is also closely involved in the control of BP and there are nerves which go both to and from the kidneys to the brain which are part of the body’s system regulating BP. The nerves travel from and to the brain alongside the aorta and then pass alongside the kidney or renal artery. A new treatment has been developed which allows us to obliterate the kidney’s nerve supply using high frequency electrical energy without affecting kidney function. The procedure involves passing a catheter into the femoral artery in the groin, in the same way we do when doing a coronary angiogram, under X-ray guidance, threading the specially designed catheter into the kidney arteries. An electrical current is then administered at several points along the artery which destroys the renal nerves. In recent published studies a significant reduction in BP was seen within a few weeks of the treatment. This allows patients to achieve better BP control although they continue to need treatment - just less of it for more benefit.