Composite graft replacement of the aortic root after previous cardiac surgery: A 20-year experience

Background. An aging population and prolonged survival of patients after ca rdiac operations has meant that composite aortic root replacement after pre vious cardiac operation is being performed with increasing frequency. Methods. From January 1979 to July 1999, 32 patients underwent "reoperative " composite replacement of the aortic root at our institution. Previous ope rations were 16 aortic valve replacement, 9 coronary artery bypass grafting , 5 repair aortic dissection, and 7 others. Indications for operation inclu ded ascending aortic aneurysm in 16 patients, ascending aortic dissections in 10 patients, and other in 6 patients. Results. The unit elective mortality was 3 of 26 (11.5%). One surgeon's ele ctive mortality was 1 of 22 (4.6%). The unit emergent mortality was 6 of 6 (100%). There has been one late death, Morbidity was low. Conclusions. Reoperative aortic root replacement is a technically demanding procedure, but expertise in the area achieves low elective mortality. Cons ideration should be given to aortic root replacement at the initial procedu re. Close follow-up of postcardiac operation patients is necessary to proce ed with elective aortic root replacement if indicated. Emergent presentatio n in the reoperative setting has a very poor prognosis. (Ann Thorac Surg 20 00;70:851-5) (C) 2000 by The Society of Thoracic Surgeons.