Out of 3,678 patients who underwent aorto-coronary bypass between May, 1979 and October, 1987 at the La Pitié Hospital, Paris, 48 had simultaneous myocardial and cerebral revascularization. Operative mortality rate was 4.2 p. 100. Peri-operative myocardial infarction occurred in 3 cases (6.2 p. 100). No neurological complication was observed. The survival rate at 5 years (operative mortality included) was 74.8 +/- 8.66 p. 100. These results obtained in patients with multiple arterial disease are in agreement with those found in the literature. The lack of neurological complications is in favour of a systematic combined surgical treatment of severe carotid and coronary lesions.