What is endovascular angioplasty with stenting?
How is carotid artery angioplasty with stenting (CAS) performed?
Carotid artery angioplasty with stenting (CAS) is a minimally invasive procedure in which a very small hollow tube, or catheter, is advanced from a blood vessel in the groin to the carotid arteries. Once the catheter is in place, a balloon may be inflated to open the artery and a stent is placed. A stent is a cylinder-like tube made of thin metal-mesh framework used to hold the artery open.
Because there is a risk of stroke from bits of plaque breaking off during the procedure, an apparatus, called an embolic protection device, may be used. An embolic protection device is a filter (like a small basket) that is attached on a guidewire to catch any debris that may break off during the procedure.
Johns Hopkins has among the best results in the country for surgery for carotid stenosis, with a published rate of 0.8% mortality and 1.8% morbidity.