Early neurological abnormalities following coronary artery bypass surgery. A prospective study

A prospective analysis of 78 patients undergoing coronary artery bypass surgery (CABS) was carried out to assess clinically the frequency and course of cerebral complications during the 1st postoperative week. Detailed evaluation of the patients showed that neurological abnormalities after CABS were common, occurring in 40 of the 78 patients (51%). However, there were no serious cerebral complications. Changes in reflexes and new focal signs were found in 26 and 25 cases respectively; in 7 patients (9%) they were confined to the first postoperative days. There was no statistically significant correlation between postoperative outcome and age, preoperative neurological state or bypass time. However, some strong associations could be calculated between a history of cerebrovascular signs or symptoms and the appearance of persisting focal signs or development reflexes during the 1st week after CABS.