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14.03.2018 | Original Article | Ausgabe 3/2019

European Journal of Trauma and Emergency Surgery 3/2019

Evaluation of a protocol for early detection of delayed brain hemorrhage in head injured patients on warfarin

Zeitschrift:
European Journal of Trauma and Emergency Surgery > Ausgabe 3/2019
Autoren:
Jing Li Huang, Theo A. Woehrle, Pat Conway, Catherine A. McCarty, Madeline M. Eyer, Steven D. Eyer
Wichtige Hinweise
Presented at: (1) University of Minnesota—Grand Rounds, Minneapolis, MN, April 12th, 2016; and (2) Minnesota Surgical Society-Trauma Resident Paper Competition, Duluth, MN, October 24th, 2015.

Abstract

Purpose

In 2007, Essentia Health St. Mary’s Medical Center (SMMC), a Level II trauma center in northeastern Minnesota, implemented a protocol for patients who presented with blunt head trauma and were receiving warfarin for anticoagulation. The purpose of this study was to determine the incidence and risk factors of early delayed, warfarin-associated intracranial hemorrhage (ICH).

Methods

Adult patients with signs and symptoms of head injury on warfarin who were admitted by protocol to SMMC between March 2007 and June 2015 were included. Patients were observed for neurologic change and received a follow-up head CT scan within 24 h after an initial negative scan.

Results

Among the 232 episodes of care studied, there were 204 patients. The average age was 71; 51% of patients were female. Most patients presented with Glasgow Coma Scale score of 15 and had signs of head trauma. The majority of patients (63%) had a therapeutic International Normalized Ratio (INR) for their indicated condition, but 19% of patients had a supratherapeutic INR and 19% had a subtherapeutic INR. The incidence of early delayed ICH was 1.7%; none of these cases required operative intervention or were fatal.

Conclusions

For patients who were anticoagulated with warfarin and had sustained minor traumatic brain injury, implementation of our protocol showed low incidence of early delayed ICH in the first 24 h. We believe withholding warfarin for several days and careful follow-up regarding its resumption is warranted, especially in the setting of supratherapeutic INR.

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