The aim of this study was to evaluate the prognostic impact of untreated asymptomatic carotid artery stenosis (CS) in patients undergoing isolated coronary artery bypass grafting (CABG). This was a post hoc analysis of data from a prospective multicentre observational study. A total of 2,813 patients, without history of stroke or transient ischaemic attack from the multicentre E-CABG registry who were screened for CS before isolated CABG were included.
The Authors observed that, among screened patients with untreated asymptomatic patients, CS ≥ 90% was an independent predictor of post-operative stroke. As this condition has a low prevalence and, when left untreated, is associated with a relatively low rate of stroke, pre-operative screening of asymptomatic carotid stenosis before CABG may not be justified.