• Am. J. Surg. · Nov 2009

    Use of a modified chitosan dressing in a hypothermic coagulopathic grade V liver injury model.

    • Grant Bochicchio, Michael Kilbourne, Reed Kuehn, Kaspar Keledjian, John Hess, and Thomas Scalea.
    • Department of Surgery, University of Maryland, Baltimore, MD, USA. gbochicchio@umm.edu
    • Am. J. Surg. 2009 Nov 1;198(5):617-22.

    BackgroundExsanguination from hepatic trauma is exacerbated by the lethal triad of acidosis, coagulopathy, and hypothermia. We evaluated the application of a modified chitosan dressing in a hypothermic coagulopathic model of grade V liver injury.MethodsSubject swine underwent induced hypothermic coagulopathy followed by standardized grade V liver injuries. A modified chitosan dressing was applied and compared with standard packing.ResultsPretreatment temperature, activated clotting time, and blood loss were similar between groups. Post treatment blood loss was significantly less and resuscitation mean arterial pressure were significantly greater in the modified chitosan group (P < .0001 and P < .018, respectively). Mean fluid resuscitative volume was significantly less in the modified chitosan group (P < .0056). Hemostasis was achieved on average 5.2 minutes following modified chitosan and never achieved with standard packing. At 1 hour post injury, all treatment animals survived compared with half of controls.ConclusionsModified chitosan dressings provide simple rapid treatment of life-threatening liver injuries.

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