Intravenous Application of Tranexamic Acid in Patients Undergoing Plastic Surgery: A Systematic Review and Meta-analysis with GRADE Quality Assessment.

[BACKGROUND] Tranexamic acid (TXA) is a versatile antifibrinolytic agent that is widely used in modern surgeries. This review assessed the safety and efficacy of intravenous (IV) TXA in plastic surgery versus controls.

[METHODS] This review selected English-language Randomized controlled trials (RCTs) evaluating IV TXA effects in plastic surgery from four electronic databases, PubMed, Web of Science, Embase, and Cochrane Library up to April 9, 2023. Primary outcomes were blood loss volume (BLV) and transfusion occurrence, with operation time and surgical field assessment as secondary outcomes. IV TXA-related complications were also important indicators. Meta-analyses and qualitative analyses were conducted and the quality of the evidence was assessed.

[RESULTS] Thirty RCTs with 2150 patients were included. The total standard mean difference (SMD) of BLV and pooled relative risk of transfusion occurrence between the IV TXA and the control groups were - 1.11 (95% CI, - 1.42 to - 0.80) and 0.36 (95% CI, 0.23 to 0.55) respectively, indicating a significant blood loss reduction with IV TXA treatment, while an ambiguous outcome of operation time was observed, with an SMD of - 0.22 (95% CI, - 0.42 to - 0.02). The quality of evidence for BLV and transfusion occurrence was low and medium, respectively. A quantitative analysis of surgical field assessment was not performed because of the substantial heterogeneity in scoring methods. No IV TXA-related complications were observed.

[CONCLUSIONS] In plastic surgery, IV TXA administration results in less blood loss, reduced need for transfusion and better surgical fields but probably does not increase the risk of adverse events.

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