In the Journal of Neurosurgical Spine, a diagnostic guideline was prospectively evaluated on a small population (n=31) as compared to historical controls (n=55). They found that an ESR test had a sensitivity of 100% if a patient had at least 1 risk factor for SEA. A CRP test was much less helpful.
Not a practical algorithm
Unfortunately, they didn’t study the utilization rate of the MRI scanner with this guideline. Are they getting better results (fewer diagnostic delays and fewer cases of patients later in their clinical course) because they are just MRI-scanning more people? Almost everyone in my ED with back pain would fall into the Urgent/Emergent MRI box… I’m not a fan of this algorithm.
Regardless, this algorithm may help you in shaping your diagnostic decision and medical decision making documentation.
PV Card: Spinal Epidural Abscess
Adapted from [1]
Go to ALiEM (PV) Cards for more resources.
Reference
- Davis D, Salazar A, Chan T, Vilke G. Prospective evaluation of a clinical decision guideline to diagnose spinal epidural abscess in patients who present to the emergency department with spine pain. J Neurosurg Spine. 2011;14(6):765-770. [PubMed]
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