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Renal Angioplasty and Stenting: A Game-Changer for Renal Artery Stenosis?
Published: Jan 24, 2024
Renal angioplasty and stenting are minimally invasive procedures used to treat renal artery stenosis. These techniques aim to open up narrowed kidney arteries, potentially improving blood flow and kidney function.
The Angioplasty Procedure
Renal angioplasty involves threading a thin catheter through the blood vessels to the narrowed renal artery. A small balloon at the tip of the catheter is then inflated, pushing the plaque against the artery walls and widening the vessel. This procedure is like unclogging a pipe, allowing blood to flow more freely to the kidney. It's typically performed under local anesthesia and patients can often go home the same day.
Adding a Stent
After angioplasty, doctors often place a stent in the artery. A stent is a small, mesh-like tube that acts as a scaffold to keep the artery open. It's usually made of metal and is left in place permanently. Stenting can help prevent the artery from narrowing again, a problem called restenosis. Studies have shown that stenting along with angioplasty is more effective than angioplasty alone for treating renal artery stenosis.
Effectiveness and Considerations
While angioplasty and stenting can effectively open narrowed renal arteries, their impact on overall patient outcomes has been debated. Some studies suggest that these procedures may not provide significant benefits over medication alone for many patients. However, certain groups, such as those with recent onset of high blood pressure or uncontrolled hypertension, may benefit more. As with any medical procedure, there are potential risks, including bleeding, infection, or damage to the artery.
Frequently Asked Questions
Typically 1-2 hours, but can vary based on complexity.
Most patients experience minimal discomfort during the procedure.
Many patients resume normal activities within a few days.
Often yes, to prevent blood clots forming on the stent.
Weighing the Options
While renal angioplasty and stenting can be effective, they're not suitable for everyone with renal artery stenosis.
References
- Cooper CJ, Murphy TP, Cutlip DE, et al. Stenting and medical therapy for atherosclerotic renal-artery stenosis. N Engl J Med 2014; 370:13.
- van de Ven PJ, Kaatee R, Beutler JJ, et al. Arterial stenting and balloon angioplasty in ostial atherosclerotic renovascular disease: a randomised trial. Lancet 1999; 353:282.
- Rocha-Singh K, Jaff MR, Rosenfield K, ASPIRE-2 Trial Investigators. Evaluation of the safety and effectiveness of renal artery stenting after unsuccessful balloon angioplasty: the ASPIRE-2 study. J Am Coll Cardiol 2005; 46:776.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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