Anastomotic leak after surgical repair of type A aortic dissection – prevalence and consequences in midterm follow-up

This study reports the mid-term prevalence and therapeutic consequences of anastomotic leaks after surgery for Stanford type A aortic dissections.From July 2007 to July 2013, 93 patients survived surgery for acute type A dissections at our center and underwent a standardized follow-up. The pre-, peri-, and postoperative as well as the midterm results were collected prospectively. Follow-up computed tomography (CT) imaging was performed 7 days, 3, and 12 months after surgery, and yearly thereafter, to assess the presence or progression of anastomotic leaks at the aorto-prosthesis anastomotic sites.The mean follow-up was 4 years (1534 ± 724 days). Follow-up CT revealed anastomotic leaks in 4 patients (4.3 %). All leaks developed during midterm follow-up and half of them did not increase with time. Two patients required redo surgery for an increase in periaortic extravasation and compression of neighboring structures. Further analysis was not able to reveal independent risk factors for development or deterioration of leaks.Anastomotic leaks after surgery for Stanford Type A aortic dissection can develop in midterm follow-up, even after initially excellent results. Meticulous follow-up is mandatory to detect possible deterioration and a need for redo surgery.