New surgery blasts kidneys with radio waves to cure high BP


Lord of Penmai
Jul 5, 2011
New surgery blasts kidneys with radio waves to cure high BP

Scientists have developed a new type of surgery using radio waves which they claim can destroy overactive nerves around the kidneys in just 30 minutes and help millions of people with high blood pressure.

The procedure involves burning away nerve tissue around the kidney arteries and was found to aid patients whose condition could not be maintained using medication, the 'Daily Mail' reported.

The team behind the 30-minute procedure believes it will mean an end to the use of pills to normalise blood pressure.

The Australian scientists believe the results of their study could revolutionise treatment of high blood pressure, a belief which was echoed by experts in the UK.

"This is very exciting. It could cure a large proportion of sufferers, bringing their blood pressure well into normal range," Professor Gareth Beevers of Blood Pressure UK told The Daily Express.

The procedure may even make the use of drugs to control the condition obsolete.

"Studies will soon determine whether this procedure can cure mild hypertension, producing permanent drug-free normalisation of blood pressure," study leader Professor Murray Esler, from the Baker IDI Heart and Diabetes Institute in Melbourne, Australia, said.

"Based on blood pressure declines achieved, reduction in heart attack and stroke rates of more than 40 per cent is anticipated," Esler said.

The minimally invasive procedure is known as catheter-based renal denervation.

It uses a probe passed through the femoral artery which fires short bursts of intense radio waves to destroy nerves around the kidneys which may be overactive in patients with hypertension.

"Participants' kidneys were not damaged or functionally impaired," Esler said, adding that the study saw no negative effects on patients' long-term health from the procedure.

The patients in the study all had blood pressure readings of 160 or higher, and had taken three or more types of medication to normalise their blood pressure.

The findings, reported in the journal Circulation, showed that six months after treatment systolic blood pressure was reduced by at least 10 millimetres of mercury in 83 per cent of one group of patients.

The systolic reading measures blood pressure with each beat of the heart.

Almost 79 per cent of the same group were able to maintain such reductions for a year.

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