Rotational Atherectomy

Arteries, blood vessels that carry oxygen-rich blood to all the parts of the body, are normally flexible and smooth on the inner side. However, plaque (deposits of cholesterol, calcium, and fibrous tissue) can build up on the inner walls of the arteries. These plaques can make the arteries hard, stiff and narrow, reducing or completely blocking the flow of blood through them. Plaque can be removed by a procedure called atherectomy.

Indications for Atherectomy

Atherectomy is indicated for narrowed arteries that cannot be treated with

  • Angioplasty and stenting: procedure where a thin tube with a balloon and/or small mesh tube is inserted through a large artery in the leg to widen the blockage
  • Bypass surgery: blood vessel re-directed to avoid arterial blockage

Atherectomy is sometimes used as a complement to angioplasty and stenting where hardened plaques are first removed to an extent to allow the insertion of the balloon and stent, which then widen the artery.

Procedure

Atherectomy is performed under local anesthesia. A thin guide wire is threaded into the blocked artery with the help of a small needle that is inserted into a blood vessel in the groin area. This guides a catheter or a thin tube to the blockage, through which a dye is injected into the artery, and X-rays are taken to view the path of the artery.

Your surgeon then inserts an atherectomy catheter attached with a blade, grinding bit, or laser filament at its tip through the guide wire to the narrowed part of the artery which is used to scrape away the plaque. Your surgeon may pass the catheter several times to cut away major parts of the hardened plaque. A collecting chamber or suction system at the tip of the catheter removes the plaque particles while it is being scraped off. Once the hardened plaque is removed, your surgeon inserts a stent, a tiny mesh tube, to support and keep the artery wall wide open, preventing it from narrowing again. Once the treatment is complete, the catheter is removed.

Post-operative Care

Following the procedure, you are advised to lie flat for some time. If bleeding occurs from the insertion site, you need to have pressure applied to stop the bleeding. You need to inform the nurse if you develop swelling, pain or bruising at the site of the catheter insertion. You will be asked to drink a lot of fluids to eliminate the dye injected into your body. Following the surgery, you will be able to go home the day after the atherectomy and you can return to your normal activities in a day or two, but you should refrain from engaging in certain strenuous activities.

Risks and Complications

The possible risks and complications of an atherectomy may include:

  • Bleeding at the site of insertion
  • Infections
  • Re-blockage of the artery by plaque formation
  • Heart attack due to closure of the artery, which requires emergency bypass surgery
  • Damage or injury to the artery leading to loss of blood
  • Clot formation in the leg or arm, which can lead to embolism (pieces of blood clot can break off and travel to the lungs or brain causing chest pain or stroke, respectively)
  • American College of Cardiology Foundation
  • The Society for Cardiovascular Angiography and Interventions Foundation
  • American College of Radiology
  • American College of Physicians
  • American College of Chest Physicians
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