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Reviews
De Freitas, S;Hicks, CW;Mouton, R;Garcia, S;Healy, D;Connolly, C;Thomas, KN;Walsh, SR
2019
March
Effects of Ischemic Preconditioning on Abdominal Aortic Aneurysm Repair: A Systematic Review and Meta-analysis
Published
1
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ACUTE KIDNEY INJURY MYOCARDIAL INJURY ENDOVASCULAR REPAIR NONCARDIAC SURGERY RISK-FACTORS REMOTE MORTALITY ASSOCIATION OUTCOMES TRIAL
Background: Ischemic preconditioning is an innate mechanism of cytoprotection against ischemia, with potential for end-organ protection. The primary goal of this study was to systematically review the literature to determine the effect of ischemic preconditioning on outcomes after open and endovascular abdominal aortic aneurysm (AAA) repair.Methods: The methodology followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines. We included randomized clinical trials that evaluated the effect of remote ischemic preconditioning (RIPC) in reducing morbidity and mortality in patients undergoing open or endovascular AAA repair surgery. The primary outcomes were death, myocardial infarction, and renal impairment. Outcomes were addressed separately for open AAA repair and endovascular AAA repair (EVAR). Data were collected on patient characteristics, methodology, and preconditioning protocol for each trial.Results: Nine trials of ischemic preconditioning in aortic aneurysm surgery were included with a total of 599 patients; 336 patients were included in the open AAA repair meta-analysis, and 263 patients were included in the EVAR meta-analysis. For both open and endovascular repairs, ischemic preconditioning did not have a significant effect on death, myocardial infarction, or renal impairment requiring dialysis.Conclusions: The randomized clinical trials investigating the effect of ischemic preconditioning on outcomes after open and endovascular AAA repair that have been completed to date have not been adequately powered to evaluate improvements in patient-important outcomes. The evidence is insufficient to support the use of ischemic preconditioning for AAA repair in clinical practice. The variability in treatment effect across studies may be explained by clinical and methodological heterogeneity. (C) 2018 Elsevier Inc. All rights reserved.
SAN DIEGO
ACADEMIC PRESS INC ELSEVIER SCIENCE
0022-4804
340
349
10.1016/j.jss.2018.09.049
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