[Chronic dissection of the aorta after coronary bypass surgery].

Dissection of the aorta is a potential complication of all forms of cardiac surgery. It occurs after a variable interval. When observed in the long term, surgery may be complex with greater technical difficulties resulting in increased postoperative morbidity and mortality compared with other types of dissection. These difficulties are all the more marked when the initial surgery is coronary bypass grafting and when the grafts, especially internal mammary artery grafts, remain patent. A surgical strategy has to be elaborated to prevent certain per- and postoperative complications. The authors report the case of a patient who developed a chronic dissection of the aorta 9 months after coronary bypass surgery with patent internal mammary artery grafts. In this situation, a strategy associating anterograde cerebral perfusion before the sternotomy and endovascular control of the internal mammary grafts was proposed.