Article ID Journal Published Year Pages File Type
2913905 European Journal of Vascular and Endovascular Surgery 2011 15 Pages PDF
Abstract

BackgroundTo compare eversion (ECEA) and conventional (CCEA) carotid endarterectomy from randomised and non-randomised studies.MethodsPooled odds ratios (ORs) with 95% confidence intervals (95%CIs) and numbers needed to treat (NNTs) were appropriately calculated. A sub-analysis was performed on studies directly comparing ECEA vs. patch CEA (PCEA). Meta-regression analysis was performed to examine the effect of potentially meaningful patient-related, procedure-related and definition-related modifiers. Power calculations were also conducted.ResultsA total of 21 studies were deemed eligible (8530 ECEA and 7721 CCEA procedures), seven of which were randomised and 14 non-randomised. ECEA was associated with significant reduction in perioperative stroke (OR = 0.46, 95%CI: 0.35–0.62, NNT = 68, 95%CI: 56–96), death (OR = 0.49, 95%CI: 0.34–0.69, NNT = 100, 95%CI: 85–185) and stroke-related death (OR = 0.40, 95%CI: 0.23–0.67, NNT = 147, 95%CI: 115–270); the results were replicated at the sub-analysis on PCEA. Concerning long-term outcomes, ECEA presented with a significant reduction in late carotid artery occlusion (OR = 0.48, 95%CI: 0.25–0.90, NNT = 143, 95%CI: 100–769) and late mortality (OR = 0.76, 95%CI: 0.61–0.94, NNT = 40, 95%CI: 25–167); the sub-analysis on PCEA replicated only the finding on late mortality. Meta-regression analysis did not point to significant effects mediated by the examined modifiers. Power calculations suggested adequate statistical power.ConclusionsECEA compared to CCEA may be associated with a lower incidence in both short-term and long-term outcomes, which does not seem to be hampered by potentially meaningful modifiers.

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