Abstract
Tranexamic acid (TXA), an antifibrinolytic agent, has been demonstrated to reduce blood loss and transfusion requirements in both cardiac and non-cardiac surgery. However, the evidence regarding the efficacy of intravenous TXA in aortic surgery has been seldomly analyzed. Therefore, the current study was performed to address this question. Searches of PubMed, EMBASE, OVID, Cochrane Library and CNKI were conducted comprehensively for randomized controlled trials (RCTs) comparing intravenous TXA versus no-TXA. Independently and in duplicate, we reviewed titles, abstracts and full-text articles, extracted data and evaluated bias risks. A random effect or fixed effect model was utilized to pool data. The database search yielded 4 RCTs involving 273 patients. Meta-analysis revealed that, there was a significant reduction in bleeding volume within the first 4 hours post-operatively [(weighted mean difference (WMD) = -74.33; 95% confidence interval (CI): -133.55 to -15.11; p = 0.01)], and the first 24 hours post-operatively [(WMD = -228.91; 95% CI: -352.60 to -105.23; p = 0.0003)], post-operative red blood cell (RBC) transfusion volume [(WMD = -420.00; 95% CI: -523.86 to -316.14; p 0.00001)], fresh frozen plasma (FFP) transfusion volume [(WMD = -360.35; 95% CI: -394.80 to -325.89; p 0.00001)] and platelet concentrate (PC) transfusion volume [(WMD = -1.27; 95% CI: -1.47 to -1.07; p 0.0001)] following intravenous TXA administration. In addition, intravenous TXA administration significantly decreased the incidence of postoperative complications (53/451 (8.2%) vs. 75/421 (13.9%); odds ratio (OR) = 0.47; 95% CI: 0.30 to 0.75; p = 0.001), according to this present meta-analysis. The current study preliminarily demonstrated that, TXA significantly reduced postoperative bleeding, blood transfusion requirements and postoperative complications among patients undergoing aortic surgery. More well-designed studies are warrant to confirm the efficacy and safety of intravenous TXA in patients undergoing aortic surgery.
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