Effect of preoperative aneurysm diameter on long-term survival after endovascular aortic aneurysm repair

OBJECTIVE: To investigate the effect of aneurysm size on long-term survival after endovascular repair (EVAR) of abdominal aortic aneurysms (AAAs).

METHODS: Retrospective study of all consecutive patients treated with EVAR for AAA at a single institution.

RESULTS: One hundred and nineteen patients (mean age 71, range 45-91) underwent EVAR during a 4-year period. The mean maximal aneurysm diameter was 58 mm (range 34-93 mm). Mean follow-up was 34 months (range 1-80). Cox regression analysis after controlling for age, renal function, coronary disease, and smoking showed a 4.9-fold higher risk of death for patients with preoperative aneurysm size ≥ 60 mm as compared to patients with aneurysm size <60 mm. No aneurysm-related deaths occurred during the follow-up.

CONCLUSION: This present study provides evidence that aneurysm size ≥60 mm is independently associated with worse survival during follow-up.