Atherosclerotic involvement of extra coronary arteries in patients undergoing myocardial revasculauzation can cause neurological complications. In order to assess the incidence and the degree of associated lesic n, we performed a routine carotid duplex to 100 patients candidates for CABO. A significant lesion was found in 10% of cases, and a significant correlation between severity of carotid disease and severity of carotid disease. So carotid duplex should be performed routinely in all patients.