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New therapy knocks out high BP with radio waves
Monday August 27, 2012 06:17:00 PM,
IANS
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London: A radical new
therapy could knock out high blood pressure by zapping the kidneys
with radio waves, a new research demonstrates.
The procedure may be available early after trials produced
dramatic improvements in the condition. It could be offering
succour to the thousands of blood pressure patients who don't
respond to drugs.
The technique delivers a burst of radio frequency energy through a
catheter to deactivate tiny nerves present in the lining of the
kidney arteries. High blood pressure (BP) may be caused by faulty
signals from the brain to these nerves.
Tens of millions of people suffer from high BP, a third of whom
don't know they do, and the condition is a risk factor in heart
disease, stroke, and kidney failure, the Daily Mail reports.
Cutting back on salt and alcohol and exercising, can control BP.
But many who are on medication, as many as five different types,
still have difficulty with it. It is this group who can be helped.
Mark Caulfield, professor at the William Harvey Research
Institute, Queen Mary College, London, who has been involved in
trials of the technique - known as renal denervation - said: "It
could make a profound difference to a significant minority of
high-risk patients, it might be tens of thousands."
Latest findings from a trial show reductions in BP persist for at
least 18 months after treatment. Doctors in the UK are setting up
a registry to allow long-term monitoring of all those having the
procedure, but so far trials have shown no ill-effects.
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