What were the results of the North American Symptomatic Carotid Endarterectomy Trial?
The North American Symptomatic Carotid Endarterectomy Trial demonstrated that surgical endarterectomy was superior to medical treatment for symptomatic carotid artery stenosis in reducing the risk of stroke, myocardial infarction, and death. The trial also showed that endarterectomy was associated with a lower risk of subsequent strokes than medical treatment alone. Furthermore, the trial suggested that endarterectomy should be performed as soon as possible after a patient has experienced a stroke or transient ischemic attack due to carotid artery stenosis. 