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This illustration provided by Ardian's Symplicity Catheter System shows the Symplicity Catheter System, which delivers low-power RF energy to deactivate the renal sympathetic nerves. A study reported Wednesday, Nov. 17, 2010 at the American Heart Association conference in Chicago says that some people who couldn't get their blood pressure under control despite taking a fistful of pills every day found relief from an experimental treatment that shows promise as a possible permanent fix for the condition. The treatment uses radio waves to zap nerves near the kidneys that fuel high blood pressure. It is done through a tube pushed into a blood vessel in the groin, much like the angioplasty procedures for opening clogged heart arteries. (AP Photo/Ardian's Symplicity Catheter System)

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