Revascularization for peripheral vascular disease in Aboriginal and non-Aboriginal patients

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Abstract

Background: Canadian Aboriginal subjects have a higher prevalence of diabetes, renal disease, and lower extremity amputation than non-Aboriginal subjects. However, limited information is available about patient outcomes for arterial bypass surgery in Canadian Aboriginal compared with non-Aboriginal subjects. Methods: A retrospective study of all patients undergoing revascularization for peripheral vascular disease at a tertiary care referral center was performed. Results: A total of 828 procedures were performed on 678 patients between 1995 and 2002: 108 (13%) procedures on 84 (12%) Aboriginal patients and 720 (87%) procedures on 594 (88%) non-Aboriginal patients. Aboriginal patients had a higher prevalence of diabetes, chronic renal failure, and end-stage renal disease than non-Aboriginal patients. Aboriginal patients presented with more serious complications (gangrene [Aboriginal, 63 {58%} of 108 patients; non-Aboriginal, 112 {16%} of 720 patients; P < .0001] and nonhealing ulcer [Aboriginal, 29 {27%} of 108 patients; non-Aboriginal, 131 {18%} of 720 patients; P < .05]) and required urgent or emergency revascularization (Aboriginal, 47 [49%] of 95 patients; non-Aboriginal, 228 [36%] of 634 patients; P < .02) more frequently than non-Aboriginal patients. The 60-month patient mortality was similar for both groups (Aboriginal, 20 [24%] of 84 patients; non-Aboriginal, 160 [27%] of 594 patients; not significant), but Aboriginal patients had loss of limb more frequently (Aboriginal, 19 [18%] of 108 patients; non-Aboriginal, 62 [9%] of 720 patients; P < .0001) and had loss of primary graft patency more frequently (Aboriginal, 39 [36%] of 108 patients; non-Aboriginal, 155 [22%] of 720 patients; P < .0001) than non-Aboriginal patients. Conclusions: Canadian Aboriginal subjects had worse outcomes with revascularization than non-Aboriginal subjects, but ethnicity and diabetes were not independent risk factors for poor outcome. Multivariate analysis showed that the poor outcomes in mortality, limb salvage, and primary graft patency among Aboriginal patients undergoing revascularization may be attributed to renal disease and a more advanced mode of presentation of peripheral vascular disease complications at the time of intervention. © 2006 The Society for Vascular Surgery.

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Goulet, S., Trepman, E., MMath, M. C., Koulack, J., Fong, H., Duerksen, F., … Embil, J. (2006). Revascularization for peripheral vascular disease in Aboriginal and non-Aboriginal patients. Journal of Vascular Surgery, 43(4), 735–741. https://doi.org/10.1016/j.jvs.2005.11.058

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