Clinical Analysis of Redo Aortic Root Replacement after Cardiac Surgery

[Abstract] objectives To explore the etologies, surgical methods and outcomes of redo aortic root replacement after cardiac surgery. Methods Between February 2010 and February 2020, 41 patients who had at least one previous cardiac operation received aortic root replacement surgery in our hospita, including 27 males and 14 females with an average age of 49.5±10.2 years. Indications for reoperation include: aortic sinus dilation and ascending aortic aneurysm in 20 cases (48.8%), recurrent aortic dissection in 7 cases (17.0%), aortic pseudoaneurysm in 4 cases (9.8%), prosthetic valve endocarditis in 5 cases (12.2%) and 5 cases (12.2%) had paravalvular leakage. The redo operation was a midline thoracotomy, and Bentall operation was performed. In addition, 3 cases of mitral valve replacement surgery, 4 cases of mitral valvuloplasty, 8 cases of tricuspid valvuloplasty, 4 cases of coronary artery bypass graft surgery, 3 cases of Debakey I aortic dissection patients underwent Sun’s surgery simultaneously. Results The mean cardiopulmonary bypass time was 95~302 (168.1±41.2) min, and the mean aortic crossclamp time was 45~135 (84.5±22.3) min. Six patients (14.6%) died during the postoperative hospitalization. The main causes of death were heart failure in 3 patients and septic shock in 3 patients.The follow-up time was 3~62 (30.3±15.5) months. During the follow-up period, 3 cases died, including 1 case died of septic shock and 2 cases died of cerebral hemorrhage. Conclusions Redo aortic root replacement is difficult to deal with, and the risk is high. Preoperative evaluation is required, appropriate surgical approach, adequate myocardial protection, and a complete surgical plan are essential to ensure the success of the operation.