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  • Title: Asymptomatic carotid artery stenosis on the side contralateral to endarterectomy. A comparison between patients with and those without operation.
    Author: Sterpetti AV, Schultz RD, Feldhaus RJ.
    Journal: J Vasc Surg; 1988 Oct; 8(4):453-9. PubMed ID: 3172382.
    Abstract:
    From May 1974 to October 1983, 82 patients with severe bilateral carotid disease had unilateral carotid endarterectomy (CE) on the symptomatic side (group I). The carotid artery contralateral to the endarterectomy was severely stenosed (lumen diameter reduction 51% up to 99%) and it was not repaired for different reasons. Group I patients were compared with 78 patients who had bilateral CE (group II), matched with group I for associated diseases, operative indication, and angiographic findings. In this analysis, only neurologic deficits referable to the contralateral hemisphere were considered. There was a higher incidence of later neurologic deficits in the group I patients; however, this difference was not statistically significant. In group I, the occurrence of late neurologic deficits was statistically correlated to (1) severity of stenosis, (2) presence of large compound ulceration, and (3) history of previous stroke. Stepwise logistic regression analysis identified two groups of patients at higher risk for late neurologic deficits (1) patients with stenosis 75% or greater and large ulceration and (2) patients with stenosis 75% or greater and previous stroke. CE on the asymptomatic contralateral side should be considered in selected patients at high risk for late neurologic events at a surgical center with an established low incidence of perioperative complications. A nonoperative policy with careful follow-up is warranted in the remaining cases.
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