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  • Title: Outcome After Ruptured AAA Repair in Octo- and Nonagenarians in Sweden 1994-2014.
    Author: Sonesson B, Björses K, Dias N, Rylance R, Mani K, Wanhainen A, Resch T.
    Journal: Eur J Vasc Endovasc Surg; 2017 May; 53(5):656-662. PubMed ID: 28356210.
    Abstract:
    OBJECTIVE: To report the outcome after ruptured abdominal aortic aneurysm (rAAA) repair in octo- and nonagenarians from the Swedish Vascular Registry 1994-2014. MATERIAL AND METHODS: 2335 intact AAA (iAAA) and 1538 rAAA were identified in patients aged 80 years and older. Crude, long-term, and relative survival data were analysed using the Kaplan-Meier method. Crude survival was calculated including all deaths. Long-term survival was analysed excluding AAA repair related mortality, defined as death within 90 days of surgery. Relative survival was assessed by comparing the observed long-term survival after AAA repair with the expected survival of a Swedish population adjusted for age, gender, and operation year. Differences were compared using log-rank tests. The multivariate Cox model was used for adjusting for confounding factors between open repair (OR) and endovascular aneurysm repair (EVAR). RESULTS: Crude survival after rAAA repair was 30 days (55%), 90 days (50%), 1 year (45%), 5 years (26%), and 10 years (9%). Long-term survival was 1 year (90%), 5 years (53%), and 10 years (18%). When individuals with rAAA were categorized into males and females, crude and long-term survival showed no significant differences (p = .204 and p = .134). When rAAA patients were categorized into age groups (80-84 years, 85-89 years, 90+) crude survival diminished with increasing age, but long-term survival was not (p = .009 and p = .368). Compared with the general population, rAAA patients showed only a minor decrease in relative survival. Crude survival after rAAA was better for EVAR compared with OR (p = .007), hazard ratio 1.3 (95% CI 1.1-1.6, p < .012). CONCLUSIONS: There is a high (50%) peri-operative mortality after surgery for rAAA in octo- and nonagenarians, with no significant differences between the sexes and worse survival with increasing age. However, if a patient has survived the initial 90 days, long-term survival in this very old cohort is surprisingly good at more than 50% after 5 years, only slightly less than the general population.
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