Abstract
Sixteen patients undergoing carotid endarterectomy operations were tested before and after undergoing operation on a series of standardized cognitive tests. The results from this limited pilot study showed no postoperative deterioration in level of cognitive function, and some aspects actually improved significantly. Patients with more severe degrees of arterial obstruction were older and generally were found to have a lower level of cognitive ability. However, their response to operation was as good as that of the patients with milder impairment.