What was Nascet?

Purpose: The North American Symptomatic Carotid Endarterectomy Trial (NASCET) and the Asymptomatic Carotid Artery Study (ACAS) both confirmed the effectiveness of carotid endarterectomy for preventing stroke in patients who have significant carotid stenosis.

What is Nascet and Ecst?

NASCET indicates North American Symptomatic Carotid End- arterectomy Trial; ECST, European Carotid Surgery Trial; and CC, common carotid. ECST indicates European Carotid Surgery Trial; CCA, com- mon carotid artery; ICA, internal carotid artery. See Fig 1 for description of ECST denominator.

How is Nascet measured?

NASCET stenosis is calculated from the ratio of the linear luminal diameter of the narrowest segment of the diseased portion of the artery to the diameter of the artery beyond any poststenotic dilatation.

What is the crest trial?

Stenting Trial (CREST) was to compare the outcomes of carotid-artery stenting with those of carotid endarterectomy among patients with symptomatic or asymptomatic extracranial carotid stenosis.

Why would a physician perform a carotid endarterectomy?

Carotid endarterectomy (CEA) is surgery to treat carotid artery disease. The carotid arteries are the main blood vessels that carry oxygen and blood to the brain. In carotid artery disease, these arteries become narrowed. This reduces blood flow to the brain and could cause a stroke.

What does Ecst stand for?

ECST. Exercise Cardiac Stress Testing (cardiology)

What is the normal ICA CCA ratio?

Table 1. Society of Radiologists in Ultrasound Consensus Criteria for Carotid Stenosis 23

Primary parameters Secondary parameters
Degree of stenosis, % ICA PSV, cm/sec ICA/CCA PSV ratio
Normal <125 <2.0
<50 <125 <2.0
50-69 125-230 2.0-4.0

Who does carotid stenting?

Carotid artery stenting is a procedure in which a vascular surgeon inserts a slender, metal-mesh tube, called a stent, which expands inside your carotid artery to increase blood flow in areas blocked by plaque.