• J. Am. Coll. Surg. · Apr 2006

    Comparative Study

    Open versus endovascular abdominal aortic aneurysm repair in VA hospitals.

    • Ruth L Bush, Michael L Johnson, Tracie C Collins, William G Henderson, Shukri F Khuri, Hong-Jen Yu, Peter H Lin, Alan B Lumsden, and Carol M Ashton.
    • Houston Center for Quality of Care and Utilization Studies, Michael E DeBakey Veterans Affairs Medical Center, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA.
    • J. Am. Coll. Surg. 2006 Apr 1; 202 (4): 577-87.

    BackgroundEndovascular abdominal aortic aneurysm repair (EVAR), when compared with conventional open surgical repair, has been shown to reduce perioperative morbidity and mortality. We performed a retrospective cohort study with prospectively collected data from the Department of Veterans Affairs to examine outcomes after elective aneurysm repair.Study DesignWe studied 30-day mortality, 1-year survival, and postoperative complications in 1,904 patients who underwent elective abdominal aortic aneurysm repair (EVAR n=717 [37.7%]; open n=1,187 [62.3%]) at 123 Department of Veterans Affairs hospitals between May 1, 2001 and September 30, 2003. We investigated the influence of patient, operative, and hospital variables on outcomes.ResultsPatients undergoing EVAR had significantly lower 30-day (3.1% versus 5.6%, p=0.01) and 1- year mortality rates (8.7% versus 12.1%, p=0.018) than patients having open repair. EVAR was associated with a decrease in 30-day postoperative mortality (adjusted odds ratio[OR]=0.59; 95% CI=0.36, 0.99; p=0.04). The risk of perioperative complications was much less after EVAR (15.5% versus 27.7%; p<0.001; unadjusted OR 0.48; 95% CI=0.38, 0.61; p<0.001). Patients operated on at low volume hospitals (25% of entire cohort) were more likely to have had open repair (31.3% compared with 15.9% EVAR; p<0.001) and a nearly two-fold increase in adjusted 30-day mortality risk (OR=1.9; 95% CI=1.19, 2.98; p=0.006).ConclusionsIn routine daily practice, veterans who undergo elective EVAR have substantially lower perioperative mortality and morbidity rates compared with patients having open repair. The benefits of a minimally invasive approach were readily apparent in this cohort, but we recommend using caution in choosing EVAR for all elective abdominal aortic aneurysm repairs until longer-term data on device durability are available.

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