Carotid artery stenting (CAS) is a minimally invasive procedure used to treat narrowing of the carotid arteries — the blood vessels in the neck that supply blood to the brain. Blockages in these arteries increase the risk of stroke. In this procedure, a stent (a small mesh tube) is placed inside the artery to keep it open and restore normal blood flow.
Carotid artery stenting is performed to widen a narrowed or blocked carotid artery. It helps reduce the risk of stroke in patients with significant artery narrowing caused by atherosclerosis (plaque buildup). It is an alternative to carotid endarterectomy (surgical removal of plaque).
It may be recommended for patients with:
Your doctor will determine eligibility after imaging tests like ultrasound, CT angiography, or MR angiography.
A catheter is inserted through a small incision in the groin or wrist and guided to the carotid artery. A tiny balloon is inflated to widen the artery, and then a stent is placed to keep it open. The procedure usually takes 1–2 hours under local anesthesia and sedation.
Benefits include a minimally invasive approach, shorter hospital stay, faster recovery, and reduced surgical risks for patients who cannot undergo open surgery. It effectively lowers the risk of stroke caused by carotid artery narrowing.
Possible risks include bleeding at the catheter site, blood clots, artery damage, or stroke during the procedure. However, experienced specialists and modern protection devices significantly reduce these risks.
Most patients go home within 1–2 days. Light activities can usually be resumed quickly, but heavy lifting and strenuous activity should be avoided for a week. Lifelong use of blood-thinning medications is often recommended to prevent future blockages.
Both stenting and carotid endarterectomy effectively reduce stroke risk. Stenting is less invasive and preferred for patients at high surgical risk, while surgery may be recommended for others depending on age, anatomy, and overall health.
Content Validated By Dr Balakumar K Consultant Cardiologist, Baby Memorial Hospitals - Thodupuzha
If you or a loved one has been diagnosed with carotid artery narrowing, our Cardiology and Vascular Specialists at Baby Memorial Hospitals provide advanced treatment options, including carotid artery stenting for stroke prevention.
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