Indiana University School of Medicine-Terre Haute, Terre Haute, Indiana.
Morgan County EMS, Martinsville, Indiana.
Shock. 2023 Sep 1;60(3):325-332. doi: 10.1097/SHK.0000000000002177. Epub 2023 Jul 12.
Excessive blood loss in the prehospital setting poses a significant challenge and is one of the leading causes of death in the United States. In response, emergency medical services (EMS) have increasingly adopted the use of tranexamic acid (TXA) and calcium chloride (CaCl 2 ) as therapeutic interventions for hemorrhagic traumas. Tranexamic acid functions by inhibiting plasmin formation and restoring hemostatic balance, while calcium plays a pivotal role in the coagulation cascade, facilitating the conversion of factor X to factor Xa and prothrombin to thrombin. Despite the growing utilization of TXA and CaCl 2 in both prehospital and hospital environments, a lack of literature exists regarding the comparative effectiveness of these agents in reducing hemorrhage and improving patient outcomes. Notably, Morgan County Indiana EMS recently integrated the administration of TXA with CaCl 2 into their treatment protocols, offering a valuable opportunity to gather insight and formulate updated guidelines based on patient-centered outcomes. This narrative review aims to comprehensively evaluate the existing evidence concerning the administration of TXA and CaCl 2 in the prehospital management of hemorrhages, while also incorporating and analyzing data derived from the co-administration of these medications within the practices of Morgan County EMS. This represents the inaugural description of the concurrent use of both TXA and CaCl 2 to manage hemorrhages in the scientific literature.
在院前环境中大量失血是一个重大挑战,也是美国死亡的主要原因之一。针对这一问题,紧急医疗服务(EMS)越来越多地采用氨甲环酸(TXA)和氯化钙(CaCl2)作为治疗出血性创伤的干预措施。氨甲环酸通过抑制纤溶酶的形成和恢复止血平衡来发挥作用,而钙在凝血级联反应中起着关键作用,促进因子 X 向因子 Xa 和凝血酶原向凝血酶的转化。尽管 TXA 和 CaCl2 在院前和医院环境中的使用越来越多,但关于这些药物在减少出血和改善患者结局方面的比较效果的文献却很少。值得注意的是,印第安纳州摩根县 EMS 最近将 TXA 与 CaCl2 的联合给药纳入其治疗方案,这为根据以患者为中心的结局收集见解和制定更新的指南提供了宝贵的机会。本叙述性评论旨在全面评估关于在院前管理出血中使用 TXA 和 CaCl2 的现有证据,同时还整合和分析了摩根县 EMS 实践中联合使用这些药物的数据。这代表了 TXA 和 CaCl2 同时用于管理出血的首次在科学文献中的描述。