Efficacy of the Abdominal Aortic Junctional Tourniquet-Torso Plate in a Lethal Model of Noncompressible Torso Hemorrhage

Alicia Marie Bonanno, Heather E. Hoops, Todd Graham, Benjamin L. Davis, Belinda H. McCully, Lauren N. Wilson, Brianne M. Madtson, James Dean Ross

Research output: Contribution to journalArticle

Abstract

BACKGROUND: The Abdominal Aortic Junctional Tourniquet, when modified with an off-label, prototype, accessory pressure distribution plate (AAJT-TP), has the potential to control noncompressible torso hemorrhage in prolonged field care. METHODS: Using a lethal, noncompressible torso hemorrhage model, 24 male Yorkshire swine (81kg-96kg) were randomly assigned into two groups (control or AAJT-TP). Anesthetized animals were instrumented and an 80% laparoscopic, left-side liver lobe transection was performed. At 10 minutes, the AAJT-TP was applied and inflated to an intraabdominal pressure of 40mmHg. At 20 minutes after application, the AAJT-TP was deflated, but the windlass was left tightened. Animals were observed for a prehospital time of 60 minutes. Animals then underwent damage control surgery at 180 minutes, followed by an intensive care unit-phase of care for an additional 240 minutes. Survival was the primary end point. RESULTS: Compared with Hextend, survival was not significantly different in the AAJT-TP group (ρ = .564), nor was blood loss (3.3L ± 0.5L and 3.0L ± 0.5L, respectively; p = .285). There was also no difference in all physiologic parameters between groups at the end of the study or end of the prehospital phase. Three of 12 AAJT-TP animals had an inferior vena cava thrombus. CONCLUSION: The AAJT-TP did not provide any survival benefit compared with Hextend alone in this model of noncompressible torso hemorrhage.

Original languageEnglish (US)
Pages (from-to)106-110
Number of pages5
JournalJournal of special operations medicine : a peer reviewed journal for SOF medical professionals
Volume18
Issue number4
StatePublished - Dec 1 2018

ASJC Scopus subject areas

  • Medicine(all)

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