Introduction: Intravenous contrast extravasation (IVCE) on a trauma computed tomography has been quoted as a reason for intervention (angiographic embolization or operation). The new-generation computed tomographic (CT) scanners identify IVCE with increasing frequency. We hypothesized that most IVCEs do not require an intervention.
Methods: This study was a retrospective evaluation of trauma patients with IVCE on abdomen or pelvis CT scan (January 2005-December 2009). Along with demographic and hemodynamic variables, the following characteristics of IVCE were examined as potential risk factors for intervention: maximal dimension, small (≤ 1.5 cm) versus large (>1.5 cm), contained versus free, and single versus multiple and location.
Results: Sixty-nine patients with 81 IVCEs were identified: 48 IVCEs occurred in intra-abdominal solid organs, 18 IVCEs in the pelvic retroperitoneal space, and 15 IVCEs in the soft tissues or other locations. Thirty patients (43.5%) were managed without an intervention, and 39 patients (56.5%) required either an immediate (30 patients) or a delayed (9 patients) intervention. Multivariate analysis identified three independent predictors of an intervention: an admission systolic blood pressure of 100 mm Hg or lower, a large ICVE, and an Abbreviated Injury Score of the abdomen of 3 or higher. If all three independent predictors were present, 100% of patients received an intervention.
Conclusion: Nearly half of IVCEs on CT scan did not require an intervention. A hypotension at admission, a severe abdominal trauma, and a blush diameter of 1.5 cm or greater predicted the need for intervention.
Level Of Evidence: Therapeutic study, level IV; prognostic study, level III.
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