Abstract
INTRODUCTION: Venous thromboembolism (VTE) following traumatic spinal cord injury (SCI) is a major clinical concern. Current guidelines recommend initiation of chemical prophylaxis within 72 hours of injury or surgery. Given the high reported incidence of VTE in this population, the safety and efficacy of earlier initiation is an important clinical question. METHODS: We analyzed prospectively collected data in a cohort of 162 SCI patients from a single quaternary center. Demographic and clinical data were recorded. Univariate and multivariate logistic regression analyses were performed to identify predictors of VTE in SCI patients treated with LMWH within 24 hours of injury or surgery. RESULTS: Mean age was 56.9 years (28% females). One hundred and thirty (87.8%) patients underwent SCI surgery. There was an extremity fracture in 18.2% and lumbar drain was placed in 22.3%. DVT occurred in 7.4%, PE in 6.1%, and any VTE in 12.2%. A multivariable regression model including age, sex, race, injury severity score, level of SCI, SCI surgery status, admission lower extremity motor score, and extremity fracture showed that only lower extremity motor score (OR 0.94, p=0.03) was significantly associated with VTE. There were 1.5% patients with post-SCI surgery-related bleeds requiring surgery takeback. There were 5.6% non-surgery related bleeds, and 1.2% wound dehiscence. CONCLUSIONS: Initiation of LMWH within 24 hours of injury or surgery maintained the incidence of any VTE event within the lower end of previously reported ranges with 1.5% of patients who underwent SCI surgery requiring surgery takeback due to bleeding complications. Admission lower extremity motor score was the sole predictor of VTE in this patient cohort.
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