Amer Kamil M, Rehman Saqib, Amer Kamal, Haydel Christopher
*Department of Orthopaedic Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, PA; and †Department of Orthopaedic Surgery, Rutgers UMDNJ, New Jersey Medical School, Newark, NJ.
J Orthop Trauma. 2017 Oct;31(10):520-525. doi: 10.1097/BOT.0000000000000919.
BACKGROUND: Tranexamic acid (TXA) is an antifibrinolytic drug that has been shown to be effective in reducing blood loss and the need for transfusions after several orthopaedic surgeries. However, the effectiveness of TXA use in orthopaedic fracture surgeries still remains unclear. The purpose of this meta-analysis was to review existing literature with interest in the effectiveness and safety of TXA treatment in reducing total blood loss and transfusion rates for patients who underwent surgery for fracture repairs. METHODS: An electronic literature search of PubMed, Embase, OVID, and the Cochrane Library was conducted to identify studies published before December 2016. All randomized controlled trials and cohort studies evaluating the efficacy of TXA during fracture repair surgeries were identified. Primary outcome measures included the number of patients receiving a blood transfusion and perioperative total blood loss. Data were analyzed using Comprehensive Meta-Analysis (CMA) statistical software. RESULTS: Seven studies encompassing 559 patients met the inclusion criteria for the meta-analysis. Our meta-analysis indicated that when compared with the placebo control group, the use of TXA in fracture surgeries significantly reduced total blood loss by approximately 330 mL (P = 0.009), reduced the transfusion rate with a relative risk of 0.54 (P < 0.001), and decreased the drop of hemoglobin by 0.76 g/dL (P < 0.001). There was no significant difference between the number of thromboembolic events among the study groups (P = 0.24). CONCLUSIONS: This study demonstrated that tranexamic acid may be used in orthopaedic fracture surgeries to reduce total blood loss, transfusion rates, and the drop in hemoglobin level, without increasing risk of venous thrombo-embolism. A limitation to these findings is the small number of studies available. Further studies need to be conducted to confirm these findings. LEVEL OF EVIDENCE: Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
背景:氨甲环酸(TXA)是一种抗纤溶药物,已被证明在多种骨科手术后减少失血和输血需求方面有效。然而,TXA在骨科骨折手术中的有效性仍不明确。本荟萃分析的目的是回顾现有文献,关注TXA治疗在减少接受骨折修复手术患者的总失血量和输血率方面的有效性和安全性。 方法:对PubMed、Embase、OVID和Cochrane图书馆进行电子文献检索,以识别2016年12月之前发表的研究。确定了所有评估TXA在骨折修复手术中疗效的随机对照试验和队列研究。主要结局指标包括接受输血的患者数量和围手术期总失血量。使用综合荟萃分析(CMA)统计软件进行数据分析。 结果:七项研究共559例患者符合荟萃分析的纳入标准。我们的荟萃分析表明,与安慰剂对照组相比,骨折手术中使用TXA可显著减少总失血量约330 mL(P = 0.009),降低输血率,相对风险为0.54(P < 0.001),并使血红蛋白下降0.76 g/dL(P < 0.001)。研究组之间血栓栓塞事件的数量没有显著差异(P = 0.24)。 结论:本研究表明,氨甲环酸可用于骨科骨折手术,以减少总失血量、输血率和血红蛋白水平下降,而不增加静脉血栓栓塞风险。这些发现的一个局限性是可用研究数量较少。需要进一步研究以证实这些发现。 证据水平:治疗水平I。有关证据水平的完整描述,请参阅作者指南。
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