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Br J Anaesth. 2011 Sep;107(3):378-87. doi: 10.1093/bja/aer158. Epub 2011 Jun 23.

Prevalence and impact of abnormal ROTEM(R) assays in severe blunt trauma: results of the 'Diagnosis and Treatment of Trauma-Induced Coagulopathy (DIA-TRE-TIC) study'.

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1
Clinic of Anaesthesiology and Intensive Care Medicine, Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck, Austria.

Abstract

BACKGROUND:

ROTEM(®)/TEG(®) (rotational thromboelastometry) assays appear to be useful for the treatment of bleeding trauma patients. However, data on the prevalence and impact of abnormal ROTEM(®) assays are scarce.

METHODS:

This is a prospective cohort study of blunt trauma patients (Injury Severity Score ≥15 or Glasgow Coma Score ≤14) admitted to Innsbruck Medical University Hospital between July 2005 and July 2008. Standard coagulation tests, antithrombin (AT), prothrombin fragments (F1+2), thrombin-antithrombin complex (TAT), and ROTEM(®) assays were measured after admission. Data on 334 patients remained for final analysis.

RESULTS:

ROTEM(®) parameters correlated with standard coagulation tests (all Spearman r>0.5), and significant differences in mortality were detected for defined ROTEM(®) thresholds [FIBTEM 7 mm (21% vs 9%, P=0.006), EXTEM MCF (maximum clot firmness) 45 mm (25.4% vs 9.4%, P=0.001)]. EXTEM MCF was independently associated with early mortality [odds ratio (OR) 0.94, 95% confidence interval (CI) 0.9-0.99] and MCF FIBTEM with need for red blood cell transfusion (OR 0.92, 95% CI 0.87-0.98). In polytrauma patients with or without head injury (n=274), the prevalence of low fibrinogen concentrations, impaired fibrin polymerization, and reduced clot firmness was 26%, 30%, and 22%, respectively, and thus higher than the prolonged international normalized ratio (14%). Hyperfibrinolysis increased fatality rates and occurred as frequently in isolated brain injury (n=60) as in polytrauma (n=274) (5%, 95% CI 1.04-13.92 vs 7.3%, 95% CI 4.52-11.05). All patients showed elevated F1+2 and TAT and low AT levels, indicating increased thrombin formation.

CONCLUSIONS:

Our data enlarge the body of evidence showing that ROTEM(®) assays are useful in trauma patients. Treatment concepts should focus on maintaining fibrin polymerization and treating hyperfibrinolysis.

PMID:
21705350
DOI:
10.1093/bja/aer158
[Indexed for MEDLINE]
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