Weight-based, anti-Xa guided enoxaparin after spine trauma surgery: target attainment and safety in a retrospective cohort - Report - MDSpire

Weight-based, anti-Xa guided enoxaparin after spine trauma surgery: target attainment and safety in a retrospective cohort

  • By

  • Dallas L. Sheinberg

  • David Travis Johnston

  • Brendan T. O'Reilly

  • Gabriel Galan Castro

  • Jawad R. Khazaal

  • Joseph S. Withrow

  • Duncan J. Trimble

  • Ankush Chandra

  • Anthony J. Lim

  • Derek S. Sheinberg

  • Jennifer Zaragoza

  • Wen Li

  • John R. Williams

  • June 24, 2026

  • 0 min

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Clinical Report: Enoxaparin Dosing Guided by Anti-Xa Levels in Postoperative Spine Trauma Patients

Overview

This study evaluates the feasibility of anti-Xa-guided enoxaparin dosing in postoperative spine trauma patients, focusing on target attainment and safety outcomes.

Background

Patients undergoing surgery for traumatic spine injuries are at a heightened risk for venous thromboembolism (VTE), which can lead to significant morbidity and mortality. Standard prophylactic regimens may not adequately address this risk, necessitating individualized dosing strategies. Anti-Xa monitoring may optimize enoxaparin dosing.

Data Highlights

OutcomeAnti-Xa CohortFixed Dose Cohort
Symptomatic VTE1.1%1.6%
Postoperative epidural hematomas00
Required dose escalation28%N/A
Length of stayNo differenceNo difference

Key Findings

  • Symptomatic VTE rates were low and similar between the anti-Xa and fixed dose cohorts (1.1% vs. 1.6%).
  • No postoperative epidural hematomas were reported in either group.
  • 28% of patients in the anti-Xa cohort required dose escalation.
  • Bleeding requiring transfusion did not differ significantly between groups.
  • Length of hospital stay was comparable between the two cohorts.

Clinical Implications

The study evaluates anti-Xa-guided dosing of enoxaparin in postoperative spine trauma patients.

Conclusion

Further prospective studies are warranted to confirm these findings.

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