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Administration of prehospital TXA was found to improve 28 day mortality and decrease the amount of blood required to be transfused without any increased risk of thromboembolism or seizure. Two grams of TXA was superior to one gram and no TXA.

References
Prehospital tranexamic acid is associated with a survival benefit without an increase in complications: Results of two harmonized randomized clinical trials
Mazzei, Michael MD, MPH?; Donohue, Jack K. BA?; Schreiber, Martin MD; Rowell, Susan MD, MBA; Guyette, Francis X. MD; Cotton, Bryan MD; Eastridge, Brian J. MD; Nirula, Raminder MD; Vercruysse, Gary A. MD; O'Keeffe, Terence MD; Joseph, Bellal MD; Brown, Joshua B. MD, MSc; Neal, Matthew D. MD; Sperry, Jason L. MD, MPH
Journal of Trauma and Acute Care Surgery 97(5):p 697-702, November 2024. | DOI: 10.1097/TA.0000000000004315