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Likelihood Ratio (LR) in Emergency Medicine

9/07/2012

Is cervical spine X-ray necessary if there is a distracting injury?

Clinical Scenario
 A 40 yo lady arrives in ED by ambulance with neck and spinal immobilization because she fell down a staircare.

 The patients vital signs are within normal physiological parameters, she is alert, no deficit, remembers all, denies head contusion and neck pain. She complains for a sharp shoulder pain (NRS 10/10), it seems broken.
If I perform the Nexus C-Spine criteria  X Ray is indicated: a distracting injury mandates cervical spine imaging.

How much the presence of distracting injury reduces my sensibility in rule out cervical spine (c-spine) injury?

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