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Safety of Chemical DVT Prophylaxis in Severe Traumatic Brain Injury with Invasive Monitoring Devices

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Abstract

Background

Patients with traumatic brain injuries (TBIs) have an increased risk of developing a deep vein thrombosis (DVT), but the risk of hemorrhage expansion with intracranial monitoring devices remains unknown. We sought to determine the safety of chemical DVT prophylaxis in severe TBI patients with invasive intracranial pressure monitors.

Methods

We retrospectively reviewed all patients with severe TBI admitted to the neurosurgical intensive care unit of a large tertiary care center over a three-year period.

Results

155 patients were included with an incidence of DVT of 12 %. The median length of time to a stable head CT was 2 days, and the median time to initiation of chemical DVT prophylaxis was 3.6 days. The odds of DVT increased with intraparenchymal hemorrhage [OR 7.21, 95 % CI (1.43–36.47), p = 0.0169], non-White ethnicity [OR 7.86, 95 % CI (1.23–50.35), p = 0.0295], female gender [OR 13.93, 95 % CI (2.47–78.73), p = 0.0029], smoking [OR 4.32, 95 % CI (1.07–17.51), p = 0.0405], no anticoagulation [OR 25.39, 95 % CI (4.26–151.48), p < 0.001], and an IVC filter [OR 15.82, 95 % CI (3.14–79.76), p < 0.001]. Twenty-eight (18 %) of these subjects experienced in-hospital mortality. The risk of in-hospital death was significantly increased among those who did not receive anticoagulation. This study found no association between DVT formation, hemorrhage expansion, or increased risk from invasive monitoring devices between various doses of unfractionated heparin (UH) and low-molecular-weight heparin (LMWH).

Conclusion

We conclude that DVT prophylaxis with either LMWH or UH is safe with intracranial pressure monitors in place.

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Authors and Affiliations

  1. Department of Neurosurgery, University of Texas Health Science Center at San Antonio, Mail Code 7843, 7703 Floyd Curl Drive (MC7843), San Antonio, TX, 78229, USA

    Bradley A. Dengler, Ramesh Grandhi & Ali Seifi

  2. School of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA

    Paolo Mendez-Gomez, Amanda Chavez & Lacey Avila

  3. Department of Epidemiology and Biostatistics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA

    Joel Michalek & Brian Hernandez

Authors
  1. Bradley A. Dengler
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  2. Paolo Mendez-Gomez
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Correspondence to Ali Seifi.

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Dengler, B.A., Mendez-Gomez, P., Chavez, A. et al. Safety of Chemical DVT Prophylaxis in Severe Traumatic Brain Injury with Invasive Monitoring Devices. Neurocrit Care 25, 215–223 (2016). https://doi.org/10.1007/s12028-016-0280-8

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