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Arterio -Venous Malformation, Fistula and Aneurism Embolization

Embolization is a minimally invasive treatment that occludes or blocks one or more blood vessels or vascular channels of malformations (abnormalities).In a catheter embolization procedure, medications or synthetic materials called embolic agents are places through a catheter into a blood vessel to prevent blood flow to the area
  • Catheter embolization is performed to
    • Eliminate an arteriovenous malformation (AVM) or arteriovenous fistula (AVF) (abnormal connection between arteries and veins). These passageways, which may occure anywhere in the body including the brain or spinal cord, act like a short circuit diverting blood from fully circulating and delivering oxygen where it is needed
    • Treat aneurysms (a bulge or sac formed in a weak artery wall) by either blocking an artery supplying the aneurysm or closing the aneusymal sac itself as an alternative to surgery
  • Catheter embolization may be used alone or combined with other treatments such as surgery or radiation
  • Technically, successful embolization without injuring normal tissue requires the catheter to be placed in a precise position. This means that the catheter tip is situated so that embolic material can be deposited only in vessels serving the abnormal area
  • In a small percentage of cases, the procedure is not technically possible because the catheter cannot be positioned appropriately. Whether clinical success is achieved depends on many factors, including the size of a tumor, the location of an arteriovenous malformation (AVM), and how the patient views the outcome
  • In some cases, several sessions of embolization may be needed to reduce symptoms from an AVM

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