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Kidney stenting lowers blood pressure in patients with severe hypertension
Date:8/30/2012

Patients with uncontrolled renovascular hypertension saw a significant improvement in their blood pressure with renal artery stent deployment. The multicenter HERCULES trial, evaluating the safety and effectiveness of the RX Herculink Elite Stent, found that patients with higher blood pressure levels at baseline had the most dramatic reduction in blood pressure following intervention. Trial details appear in Catheterization and Cardiovascular Interventions, a journal published by Wiley on behalf of the Society for Cardiovascular Angiography and Interventions (SCAI).

Narrowing of the arteries to the kidney known as renal artery stenosis (RAS) is mainly caused by the build-up of fat and cholesterol (atherosclerosis) along the artery walls. The plaque build-up can cause high blood pressure and kidney damage. While kidney artery stenting is considered a safe procedure, the efficacy of the procedure for lowering blood pressure and preventing injury that leads to end-stage renal disease remains unclear, particularly when compared to medicines alone.

"Findings from the HERCULES trial expand scientific evidence of renal artery stenting in treating patients with high blood pressure who do not respond to standard therapy," explains Michael R. Jaff, DO, FSCAI, from the Vascular Center at Massachusetts General Hospital in Boston. "As part of the trial we also explored the predictive value of the brain natriuretic peptide (BNP) test prior to performing the stent procedure." The BNP test is used to diagnose heart failure and researchers sought to understand if BNP could predict clinical success, which is valuable information for interventionists prior to performing invasive procedures.

For the HERCULES trial researchers enrolled 202 patients with 241 total lesions and 78 bilateral lesions between August 2007 and October 2009. Patients had a history of high cholesterol levels and active or recently discontinued tobacco use. The majority
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Contact: Dawn Peters
sciencenewsroom@wiley.com
781-388-8408
Wiley
Source:Eurekalert

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