• Transfusion · Jul 2021

    Prehospital whole blood reduces early mortality in patients with hemorrhagic shock.

    • Maxwell A Braverman, Alison Smith, Douglas Pokorny, Benjamin Axtman, Charles Patrick Shahan, Lauran Barry, Hannah Corral, Rachelle Babbitt Jonas, Michael Shiels, Randall Schaefer, Eric Epley, Christopher Winckler, Elizabeth Waltman, Brian J Eastridge, Susannah E Nicholson, Ronald M Stewart, and Donald H Jenkins.
    • Department of Surgery, UT Health San Antonio, San Antonio, Texas, USA.
    • Transfusion. 2021 Jul 1; 61 Suppl 1: S15-S21.

    BackgroundLow titer O+ whole blood (LTOWB) is being increasingly used for resuscitation of hemorrhagic shock in military and civilian settings. The objective of this study was to identify the impact of prehospital LTOWB on survival for patients in shock receiving prehospital LTOWB transfusion.Study Design And MethodsA single institutional trauma registry was queried for patients undergoing prehospital transfusion between 2015 and 2019. Patients were stratified based on prehospital LTOWB transfusion (PHT) or no prehospital transfusion (NT). Outcomes measured included emergency department (ED), 6-h and hospital mortality, change in shock index (SI), and incidence of massive transfusion. Statistical analyses were performed.ResultsA total of 538 patients met inclusion criteria. Patients undergoing PHT had worse shock physiology (median SI 1.25 vs. 0.95, p < .001) with greater reversal of shock upon arrival (-0.28 vs. -0.002, p < .001). In a propensity-matched group of 214 patients with prehospital shock, 58 patients underwent PHT and 156 did not. Demographics were similar between the groups. Mean improvement in SI between scene and ED was greatest for patients in the PHT group with a lower trauma bay mortality (0% vs. 7%, p = .04). No survival benefit for patients in prehospital cardiac arrest receiving LTOWB was found (p > .05).DiscussionThis study demonstrated that trauma patients who received prehospital LTOWB transfusion had a greater improvement in SI and a reduction in early mortality. Patient with prehospital cardiac arrest did not have an improvement in survival. These findings support LTOWB use in the prehospital setting. Further multi-institutional prospective studies are needed.© 2021 AABB.

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