Factors affecting survival after endovascular aneurysm repair: results from a population based audit

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dc.contributor.authorBoult, M.
dc.contributor.authorMaddern, G.
dc.contributor.authorBarnes, M.
dc.contributor.authorFitridge, R.
dc.date.issued2007
dc.description.abstractObjectives: To determine the effect of pre-operative factors on mid-term survival of patients enrolled in an Australian audit of endovascular aneurysm repair (EVAR). Design: Prospective longitudinal national register (audit) of patients undergoing EVAR. Methods: 961 individuals who had elective or semi-urgent EVAR of abdominal aortic aneurysms were enrolled in the audit between November 1999 and May 2001. Data was contributed by 81 surgeons from 64 hospitals. Kaplan-Meier survival analysis was used to determine survival rates and factors significantly influencing survival. Parametric survival analysis with log-exponential distribution was used to estimate expected 3 and 5 year survival for different ages, ASA, creatinine and aneurysm sizes. Results: Overall survival was 93% at 1 year, 80% at 3 years and 67% at five years. Survival rates were found to be statistically associated with ASA, age, aneurysm size and creatinine levels. ASA has the largest effect. Five year survival rates for aneurysms ≥65 mm and <55 mm were 54% and 76% respectively. Pre-operative creatinine levels ≥ 160 μmol/L lowered the survival rate from 71% to 40%. Conclusions: Survival for EVAR patients is strongly correlated with a number of pre-operative factors. This survival analysis provides a useful decision-making tool for surgeons particularly for individuals with smaller aneurysms.
dc.description.statementofresponsibilityM. Boult, G. Maddern, M. Barnes and R. Fitridge
dc.identifier.citationEuropean Journal of Vascular and Endovascular Surgery, 2007; 34(2):156-162
dc.identifier.doi10.1016/j.ejvs.2007.02.020
dc.identifier.issn1078-5884
dc.identifier.issn1532-2165
dc.identifier.orcidBoult, M. [0000-0002-0517-9535]
dc.identifier.orcidMaddern, G. [0000-0003-2064-181X]
dc.identifier.orcidFitridge, R. [0000-0001-6258-5997]
dc.identifier.urihttp://hdl.handle.net/2440/41879
dc.language.isoen
dc.publisherW B Saunders Co Ltd
dc.rightsCopyright © 2007 Elsevier Ltd All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.ejvs.2007.02.020
dc.subjectAorta
dc.subjectAneurysm
dc.subjectAbdominal
dc.subjectAustralia
dc.subjectMedical audit
dc.subjectData collection
dc.subjectRegistries
dc.titleFactors affecting survival after endovascular aneurysm repair: results from a population based audit
dc.typeJournal article
pubs.publication-statusPublished

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