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  • Title: Feasibility of using rotational thromboelastometry to assess coagulation status of combat casualties in a deployed setting.
    Author: Doran CM, Woolley T, Midwinter MJ.
    Journal: J Trauma; 2010 Jul; 69 Suppl 1():S40-8. PubMed ID: 20622618.
    Abstract:
    BACKGROUND: Coagulopathy in trauma patients is currently defined by the results of standard laboratory tests (prothrombin time and activated partial thromboplastin time). These results offer little in the hemostatic resuscitation that occurs in the treatment of battlefield patients who receive massive transfusions. Thromboelastometry (TEM) is a technique that can offer rapid, near-patient testing of coagulation status. METHODS: A prospective observational field study was performed in a deployed military setting to determine the feasibility of using TEM to assess the coagulation status of patients admitted to the emergency department and who subsequently received a massive transfusion. RESULTS: TEM was performed on 31 patients, 25 were direct admissions to the emergency department, 19 of whom were enrolled into the massive transfusion protocol, and 60% were involved in a blast incident. Standard laboratory testing showed that 10% of all patients were coagulopathic on admission compared with 64% with an abnormal TEM trace (p = 0.0005). All patients had abnormal maximum clot firmness. The TEM amplitude at 10 minutes is associated with the subsequent development of abnormal maximum clot firmness. Two exemplar cases are discussed, which illustrate the potential benefit of using TEM to monitor and guide and individualize therapy during a massive transfusion. CONCLUSIONS: It is feasible to use TEM in a deployed military setting. We have shown that rotational thromboelastometry significantly detects more abnormalities in the coagulation status than the standard laboratory tests (prothrombin time, and activated partial thromboplastin time).
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