Final answer:
The treatment for carotid stenosis greater than 70% typically involves carotid endarterectomy or angioplasty with stenting, with antiplatelet therapy used to prevent blood clots.
Step-by-step explanation:
The treatment of symptomatic carotid stenosis greater than 70% may involve several options. Carotid endarterectomy is a surgical procedure typically performed on the carotid arteries of the neck, where plaque is surgically removed from the vessel's walls to prevent strokes and improve blood flow to the brain. Angioplasty with stenting is another procedure where a catheter is inserted into the vessel at the site of narrowing, and a balloon tip is inflated to widen the opening, followed by the insertion of a stent to reinforce the vessel and prevent collapse. Antiplatelet therapy, such as the use of aspirin, may also be prescribed to prevent blood clots, although this is typically used for less severe stenosis or post-surgery to prevent clotting around the surgical area.