Traumatic brain injury (TBI) often results in coagulopathy, which increases mortality risk. The Clinical Randomization of an Antifibrinolytic in Significant Head injury (CRASH)-2 and CRASH-3 trials confirmed that tranexamic acid (TXA) was effective after trauma. Herein, we report a unique coagulation change in a patient with TBI given TXA after point-of-care assessment. Coagulation functions were impaired on admission. At 1 hour after TXA administration, clotting time was further prolonged in the extrinsic coagulation pathway but shortened in the intrinsic coagulation system. The results of a test of the total thrombus-formation analysis system showed improved blood clot formation ability. Intrinsic coagulation and clot formation improved after TXA administration in a TBI patient with coagulopathy.
Keywords: coagulation function; tranexamic acid; traumatic brain injury.