Viscoelastic Testing and Coagulopathy of Traumatic Brain Injury

Author:

Bradbury Jamie L.,Thomas Scott G.,Sorg Nikki R.ORCID,Mjaess NicolasORCID,Berquist Margaret R.,Brenner Toby J.ORCID,Langford Jack H.,Marsee Mathew K.,Moody Ashton N.,Bunch Connor M.ORCID,Sing Sandeep R.,Al-Fadhl Mahmoud D.ORCID,Salamah Qussai,Saleh Tarek,Patel Neal B.,Shaikh Kashif A.,Smith Stephen M.,Langheinrich Walter S.,Fulkerson Daniel H.,Sixta Sherry

Abstract

A unique coagulopathy often manifests following traumatic brain injury, leading the clinician down a difficult decision path on appropriate prophylaxis and therapy. Conventional coagulation assays—such as prothrombin time, partial thromboplastin time, and international normalized ratio—have historically been utilized to assess hemostasis and guide treatment following traumatic brain injury. However, these plasma-based assays alone often lack the sensitivity to diagnose and adequately treat coagulopathy associated with traumatic brain injury. Here, we review the whole blood coagulation assays termed viscoelastic tests and their use in traumatic brain injury. Modified viscoelastic tests with platelet function assays have helped elucidate the underlying pathophysiology and guide clinical decisions in a goal-directed fashion. Platelet dysfunction appears to underlie most coagulopathies in this patient population, particularly at the adenosine diphosphate and/or arachidonic acid receptors. Future research will focus not only on the utility of viscoelastic tests in diagnosing coagulopathy in traumatic brain injury, but also on better defining the use of these tests as evidence-based and/or precision-based tools to improve patient outcomes.

Publisher

MDPI AG

Subject

General Medicine

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