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  • Title: Delayed intracranial hemorrhage after mild traumatic brain injury in patients on oral anticoagulants: is the juice worth the squeeze?
    Author: Covino M, Manno A, Della Pepa GM, Piccioni A, Tullo G, Petrucci M, Navarra S, Sardeo F, Torelli E, Nicolò R, Simeoni B, Carbone L, Gaudino S, Franceschi F.
    Journal: Eur Rev Med Pharmacol Sci; 2021 Apr; 25(7):3066-3073. PubMed ID: 33877670.
    Abstract:
    OBJECTIVE: Mild Traumatic Brain Injury (MTBI) in anticoagulated patients is a common challenge for Emergency Department (ED) Physicians. Anticoagulation is considered a risk factor for developing delayed intracranial hemorrhage (ICH) after MTBI. The occurrence of this event in patients on Vitamin K Antagonists (VKA) or Direct Oral Anticoagulants (DOACs) remains unclear. Primary endpoint: to analyze the role of anticoagulants as risk factors for developing delayed ICH after MTBI and evaluate the indications to repeat a cranial computed tomography (CT) after a period of observation. Secondary endpoint: to assess the difference in the prevalence rate of delayed ICH in patients on VKA versus those on DOACs. PATIENTS AND METHODS: We evaluated all consecutive patients admitted to our ED for MTBI, which had a control CT for late ICH after a negative CT at admission. We used a propensity score match (PSM) on factors affecting the need for oral anticoagulation to adjust the comparison between anticoagulated vs. non-anticoagulated patients for the baseline clinical characteristics. RESULTS: Among 685 patients enrolled, 15 (2.2%) developed ICH at control CT. After PSM, the incidence of ICH, although slightly higher, was not statistically different in anticoagulated patients vs. non-anticoagulated (2.3% vs. 0.6%, p=0.371). Among the 111 patients on VKA, 5 (4.5%) had a late ICH, compared to 4 out of 99 (4.0%) on DOACs; the difference was not statistically significant (p=0.868). CONCLUSIONS: The risk of developing delayed ICH after MTBI in patients on anticoagulation therapy is low. After correction for baseline covariates, the risk does not appear higher compared to non-anticoagulated patients. Thus, a routine control CT scan seems advisable only for patients presenting a clinical deterioration. Larger, prospective trials are required to clarify the safety profile of DOACs vs. VKA in MTBI.
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