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. 2018 May 1;43(9):E520-E524.
doi: 10.1097/BRS.0000000000002420.

Indications for CT-Angiography of the Vertebral Arteries After Trauma

Joseph P Drain  1 , Douglas S Weinberg, James S Ramey, Timothy A Moore, Heather A Vallier
Affiliations

Indications for CT-Angiography of the Vertebral Arteries After Trauma

Joseph P Drain et al. Spine (Phila Pa 1976). .

Abstract

Study design: Retrospective.

Objective: The purpose of this project is to identify factors that predict vertebral artery injury (VAI) in an effort to assess risks and benefits of computed tomography angiography (CT-A) of the neck in the trauma setting. We seek to develop guidelines for practitioners to stratify patients at medium/high risk of VAI from those who are at low risk.

Summary of background data: VAI and blunt carotid injury (BCI) together comprise blunt cerebrovascular injury (BCVI). More is known about risk factors for BCI than for VAI, but the neurovascular complications associated with VAI are similarly disastrous. With increasing frequency, trauma providers are using CT-A to screen for BCVI; this test carries risks that include radiation exposure and nephrotoxicity, in addition to higher cost of treatment and longer hospital stay.

Methods: Trauma patients seen over 4 months at an urban, level 1 trauma were analyzed. BCVI screening was conducted in 144/1854 (7.77%) patients. Presence of VAI and several clinical characteristics were recorded. Univariate analysis and binomial logistic regression analysis were conducted at a 95% significance level.

Results: VAI was diagnosed in 0.49% of the study population. Univariate analysis determined six factors associated with positive VAI screening. Regression analysis showed four factors that independently predicted VAI: female sex, decreased Glasgow Coma Scale, cervical spine (c-spine) fracture, and concurrent BCI. A positive c-spine physical examination trended toward predicting VAI without achieving significance.

Conclusion: Several independent predictors of VAI were identified. This study highlights the importance of identifying patients at a higher risk for VAI and indicating CT-A of the neck versus those who are at low risk and can be evaluated without undergoing advanced imaging, as CT-A appears unnecessary for most trauma patients.

Level of evidence: 3.

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Comment in

  • TO THE EDITOR.
    Lyu Q, Yang H, Zhou C, Liu L, Song Y. Lyu Q, et al. Spine (Phila Pa 1976). 2018 Mar 1;43(5):E320. doi: 10.1097/BRS.0000000000002530. Spine (Phila Pa 1976). 2018. PMID: 29432409 No abstract available.
  • TO THE EDITOR.
    Malhotra A, Wu X, Tu LH, Seifert K. Malhotra A, et al. Spine (Phila Pa 1976). 2018 Mar 15;43(6):E379-E380. doi: 10.1097/BRS.0000000000002544. Spine (Phila Pa 1976). 2018. PMID: 29494457 No abstract available.

References

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    1. Carpenter S. Injury of neck as cause of vertebral artery thrombosis. J Neurosurg 1961; 18:849–853.
    1. Biffl WL, Moore EE, Elliot JP, et al. The devastating potential of blunt vertebral arterial injuries. Ann Surg 1999; 231:672–681.
    1. Biffl WL, Moore EE, Offner PJ, et al. Optimizing screening for blunt cerebrovascular injuries. Am J Surg 1999; 178:517–522.