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          TXA was most beneficial when given with cryoprecipitate.    School of Medicine, Columbia University, the Texas Army Na-
          In the prehospital assessment of TXA in Afghanistan and   tional Guard, Department of the Army, or the Department of
                                          53
          Iraq, no survival benefit was determined.  However, two re-  Defense.
          cent studies and a systematic review and meta-analysis found
          a mortality benefit from prehospital TXA administration. 54–56  References
                                                              1.  National Academies of Sciences, Engineering, Medicine. A national
          The effects of hypocalcemia on coagulopathy in trauma were   trauma care system: Integrating military and civilian trauma systems
          underappreciated for many years. They are now being recog-  to achieve zero preventable deaths after injury. 2016. https://nap
          nized as having a significant impact. Current recommenda-  .nationalacademies.org/catalog/23511/a-national-trauma-care-
                                                                system-integrating-military-and-civilian-.trauma#:~:text=The%20
          tions from the Joint Trauma System (JTS) and the Committee   National%20Academies%20of%20Sciences,of%20zero%20
          on Tactical Combat Casualty Care (CoTCCC) recommend    preventable%20deaths%20after. Accessed 24 April 2022.
          1 gram of calcium chloride or 3 grams of calcium gluconate   2.  Eastridge BJ, Mabry RL, Seguin P, et al. Death on the battlefield
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          the third or fourth unit of blood. Optimally, ionized calcium   3.  Holcomb JB. Transport time and preoperating room hemostatic
                                                                interventions are important: improving outcomes after severe
          level would be monitored and treated accordingly to maintain   truncal injury. Crit Care Med. Mar 2018;46(3):447–453.
          > 1.2mmol/L (4.8mg/dL).                             4.  Moore EE, Moore HB, Kornblith LZ, et al. Trauma-induced co-
                                                                agulopathy. Nat Rev Dis Primers. 2021;7(1):30.
          A recent study found that a bolus dose of arginine vasopressin   5.  Maegele M, Gu ZT, Huang QB, Yang H. Updated concepts on the
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                                                                rhage and coagulopathy. Chin J Traumatol. 2017;20(3):125–132.
                     59
          requirements.  Arginine vasopressin is an option in the pre-  6.  Moore HB, Moore EE, Morton AP, et al. Shock-induced sys-
          hospital setting and may play a role in the future. However,   temic hyperfibrinolysis is attenuated by plasma-first resuscita-
          in the patients included in the study, prehospital vasopressor   tion. J Trauma Acute Care Surg. 2015;79(6):897–903; discussion
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          use in combat has been associated with increased mortality.    903–904.
          Those patients were more severely wounded and arginine va-  7.  Meledeo MA, Herzig MC, Bynum JA, et al. Acute traumatic co-
          sopressin was not the most common vasopressor used.   agulopathy: the elephant in a room of blind scientists. J Trauma
                                                                Acute Care Surg. Jun 2017;82(6S Suppl 1):S33–S40.
                                                              8.  Brohi K, Singh J, Heron M, Coats T. Acute traumatic coagulopa-
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          ating either whole blood or 1:1:1 transfusion of red blood   predicts mortality in trauma. J Trauma. 2003;55(1):39–44.
          cell (RBCs), plasma, and platelets, with a goal of heart rate   10.  Davenport RA, Guerreiro M, Frith D, et al. Activated protein
                                                         61
          < 100 beats/min and systolic blood pressure > 100mmHg.    C drives the hyperfibrinolysis of acute traumatic coagulopathy.
          Goals using laboratory values include hemoglobin concen-  Anesthesiology. 2017;126(1):115–127.
          tration > 8.0g/dL, hematocrit > 27%, lactate concentration    11.  Neal MD, Moore HB, Moore EE, et al. Clinical assessment of
                                                                trauma-induced coagulopathy and its contribution to postin-
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                                                   58
          portant to remember that hemoglobin and hematocrit changes   2015;79(3):490–492.
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                                                                -CAP-Staging-TIC-monitor-therapeutic-LTC-Cap-RDCR-2016.
          orrhage if platelets are not available. Prothrombin complex   pdf, Accessed 24 April 2022.
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                                         15
          gest that when employing component therapy, earlier plasma   14.  Sheppard FR, Schaub LJ, Cap AP, et al. Whole blood mitigates
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                                                             15.  Robinson BRH, Cohen MJ, Holcomb JB, et al. Risk factors for
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          Conclusion
                                                                hemorrhage. Shock. 2018;50(3):258–264.
          Coagulopathy associated with trauma represents an immedi-  16.  Kaczynski J, Wilczynska M, Hilton J, Fligelstone L.  Impact of
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                                                                Care. 2013;1(1).
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                                                                -in-trauma/. Accessed 24 April 2022.
                                                             18.  Guyette  FX, Sperry JL,  Peitzman AB,  et al.  Prehospital  blood
          Disclosures
          The authors have nothing to disclose.                 product and crystalloid resuscitation in the severely injured pa-
                                                                tient: a secondary analysis of the prehospital air medical plasma
                                                                trial. Ann Surg. 2021;273(2):358–364.
          Disclaimer                                         19.  Kasotakis G, Sideris A, Yang Y, et al. Aggressive early crystalloid
          The opinions or assertions contained herein are the private   resuscitation  adversely  affects  outcomes  in  adult  blunt  trauma
          views of the author and are not to be construed as official   patients: an analysis of the Glue Grant database. J Trauma Acute
          or as reflecting the views of the University of New Mexico   Care Surg. 2013;74(5):1215–1221; discussion 1221–1222.


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