The role of neuroimaging in the latent period of blunt traumatic cerebrovascular injury.

Introduction: Blunt cerebrovascular injury (BCVI) is found in 1-2.7% of all blunt trauma when appropriate screening criteria are employed. A significant number of patients with BCVI have a latent, or asymptomatic period, in which therapeutic intervention based on the appropriate use of angiographic imaging may decrease the risk of an ischemic stroke. Methods: Case report and review of literature. Results: A 42 year old woman suffered a fall off a motorcycle and was neurologically intact in the emergency room. Fractures involving the transverse foramen of cervical vertebrae were found on non-contrast Computed Tomography (CT) but screening for BCVI with angiographic imaging not performed. She subsequently suffered an ischemic stroke resulting in significant disability. Published studies that address the use of screening criteria for BCVI and subsequent management are reviewed. Conclusion: BCVI results in significant morbidity and mortality attributable to ischemic stroke. There is often a latent period between BCVI and occurrence of ischemic stroke. Specific risk factors can be used to identify patients requiring screening with catheter or CT angiography. Treatment with antithrombotic agents is the mainstay of treatment of BCVI and may reduce the rate of ischemic stroke. Identification and treatment of asymptomatic BCVI in blunt trauma patients may prevent ischemic stroke in a predominantly young population.