What does Nascet mean?
Purpose: The North American Symptomatic Carotid Endarterectomy Trial (NASCET) has thus far demonstrated conclusive benefit for carotid endarterectomy for patients with symptomatic 70% to 99% internal carotid artery (ICA) stenosis.
How is Nascet calculated?
NASCET was established by angiographic calculation of ICA stenosis percentage using the following formula: % ICA stenosis = (1 – [narrowest ICA diameter/diameter normal distal cervical ICA]) x 100.
How is ICA CCA ratio calculated?
The ICA/CCA PSV ratio was calculated by dividing the PSV of the ICA, which was selected for analysis by the PSV of the CCA. Specific recordings were also taken proximal to the stenosis, at the stenosis site, and immediately distal to the stenosis in the ICA, as seen on real-time imaging.
How blocked does a carotid artery have to be before surgery?
Surgery to remove the buildup in your carotid artery may be done if the artery is narrowed by more than 70%. If you have had a stroke or temporary brain injury, your provider will consider whether treating your blocked artery with surgery is safe for you.
What is normal ICA PSV?
normal. ICA PSV is <125 cm/sec and no plaque or intimal thickening is visible sonographically. additional criteria include ICA/CCA PSV ratio <2.0 and ICA EDV <40 cm/sec.
What does nascet stand for?
Crossref Medline Google Scholar 66 North American Symptomatic Carotid Endarterectomy Trial (NASCET) Group. Long-term prognosis and effect of endarterectomy in patients with symptomatic severe carotid stenosis and contralateral carotid stenosis or occlusion: results from NASCET. J Neurosurg.1995; 83:778–782. Crossref Medline Google Scholar
When was the nascet study published?
Original Date of Publication: August 15, 1991 Study Rundown: The NASCET was one of the first trials to provide strong evidence in favor of carotid endarterectomy, in addition to medical therapy, in treating symptomatic carotid artery stenosis.
What is the nascet trial for carotid stenosis?
66 North American Symptomatic Carotid Endarterectomy Trial (NASCET) Group. Long-term prognosis and effect of endarterectomy in patients with symptomatic severe carotid stenosis and contralateral carotid stenosis or occlusion: results from NASCET. J Neurosurg.1995; 83:778–782. Crossref Medline Google Scholar
What is the nascet for carotid endarterectomy?
The NASCET: Carotid endarterectomy for symptomatic stenosis [Classics Series] 1. Carotid endarterectomy, in addition to medical therapy, significantly reduces risk of major and fatal stroke in patients with symptomatic, high-grade (70-99%) carotid stenosis.