Reoperations for aortic false aneurysms after cardiac surgery.

Background: Aortic false aneurysm is a rare complication after cardiac surgery. Aortic dissection, infection, arterial wall degeneration, and poor surgical technique are recognized as risk factors for the occurrence of postsurgical false aneurysm. Despite some recent reports about percutaneous false aneurysm exclusion, a complex surgical reoperation is needed in most of the cases.

Methods: We retrospectively reviewed our experience in 43 patients who received a reoperation for postsurgical aortic false aneurysm in the last 14 years. Thirty-three patients were male. The mean age was 60 ± 12 years. Most of the patients received prior aortic surgery on the aortic root, the ascending aorta, the aortic arch, and the descending thoracic aorta (38 patients). False aneurysm was diagnosed during follow-up evaluation in the absence of any symptoms in 23 cases. Univariate and multivariate analyses on 18 perioperative variables were performed.

Results: In-hospital mortality was 6.9% (3 patients). The postoperative course was complicated in 17 cases (39%). At multivariate analysis, a preoperative history of coronary artery disease and postoperative sepsis were independent risk factors for hospital mortality. Survival rates at 1, 5, and 10 years were 94%, 79%, and 68%, respectively. Freedom from reoperation was 86% at 1 year and 72% at 5 and 10 years.

Conclusions: Despite a high postoperative complication rate, a reoperation for postsurgical aortic false aneurysm can be performed with acceptable mortality and good mid-term and long-term outcomes.