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  • Title: Intracranial hemorrhage in anticoagulated patients with mild traumatic brain injury: significant differences between direct oral anticoagulants and vitamin K antagonists.
    Author: Cipriano A, Pecori A, Bionda AE, Bardini M, Frassi F, Leoli F, Lami V, Ghiadoni L, Santini M.
    Journal: Intern Emerg Med; 2018 Oct; 13(7):1077-1087. PubMed ID: 29520701.
    Abstract:
    Prognosis after mild traumatic brain injury (MTBI) on oral anticoagulant therapy (OAT) is uncertain. We evaluated the rate of immediate and delayed traumatic intracranial hemorrhage (ICH) comparing vitamin K antagonists (VKAs) to direct oral anticoagulants (DOACs) and the safety of a clinical management protocol. In this single-center prospective observational study, we enrolled 220 patients on OAT with MTBI. After a first negative CT scan, asymptomatic patients underwent a close neurological observation; if neurologically stable, they were discharged without a second CT scan and followed up for 1 month. Out of the 220 patients, 206 met the inclusion criteria. 23 of them (11.2%) had a positive first CT scan for ICH. Only 1 (0.5%, 95% CI 0.0-1.4%) died because of ICH; no one required neurosurgical intervention. The observed prevalence rate of immediate ICH resulted statistically higher in VKAs-treated patients compared to those treated with DOACs (15.7 vs. 4.7%, RR 3.34, 95% CI 1.18-9.46, P < 0.05). In the 1-month follow-up, 5 out of the 183 patients with a negative CT scan were lost. Out of the remaining 178 patients, only 3 showed a delayed ICH (1.7%, 95% CI 0.0-3.6%), 1 of them died (0.6%, 95% CI 0.5-1.7%) and the others did not require neurosurgical intervention. DOACs resulted safer than VKAs also in the setting of MTBI. In our observation, the rate of delayed hemorrhage was relatively low. Patients presenting with a negative first CT scan and without neurological deterioration could be safely discharged after a short period of in-ward observation with a low rate of complications and without a second CT scan.
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