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Perioperative bleeding is a major risk during and after surgery, which can result in increased mortality and morbidity. Tranexamic acid (TXA) in the setting of trauma, minimises perioperative bleeding and its associated risks. However, there is a lack of evidence of its use in elective abdominal surgery. This meta-analysis of randomised controlled trials (RCTs) evaluated the effectiveness and safety of TXA in elective extrahepatic abdominal surgery. Method A comprehensive search of Pubmed, Embase, and Clinicaltrial.gov databases was undertaken to identify RCTs from January 1947 to May 2020. The primary outcomes of intraoperative blood loss, and the secondary outcomes of need for perioperative blood transfusion, thromboembolic events, and mortality were extracted from included studies. Quantitative pooling of data was based on the random effects model. Results Nineteen studies reporting on 2205 patients were included. TXA reduced intraoperative blood loss (weighted mean difference (WMD) -188.35mL; 95% CI -254.65 to -121.72) and the need for perioperative blood transfusion (odds ratio (OR) 0.43; 95% CI 0.28 to 0.65). Importantly, TXA had no impact on the incidence of thromboembolic events (OR 0.49; 95% CI 0.18 to 1.35). There were no reported deaths in any of the studies. Conclusion TXA reduces intra-operative blood loss without an increase in complications.

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P107 Safety and Efficacy of Tranexamic Acid to Minimise Perioperative Bleeding in Extrahepatic Abdominal Surgery: a systematic review and meta-analysis