Title: ESR and CRP in Spinal Infection<br/>Author: Brian Corwell<br/><a href='http://umem.org/profiles/faculty/294/'>[Click to email author]</a><hr/><p>
Both erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) are highly sensitive (84-100%) for spinal infections and are observed in >80% with vertebral osteomyelitis and epidural abscesses.</p>
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<strong>ESR </strong></p>
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Most sensitive and specific serum marker, usually elevated in both spinal epidural abscess (SEA) and vertebral osteomyelitis. </p>
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ESR was elevated in 94-100% of patients with SEA vs. only 33% of non-SEA patients</p>
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Mean ESR in patients with SEA was significantly elevated (51-77mm/hour)</p>
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<strong>CRP </strong></p>
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Not highly specific</p>
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Less useful for acute diagnosis since CRP levels rise faster and return to baseline faster than ESR (elevated CRP seen in 87% of patients with SEA as well as in 50% of patients with spine pain not due to a SEA)</p>
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Better used as a marker of response to treatment. </p>
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<fieldset><legend>References</legend>
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1) Colip CG, Lotfi M, Buch K, Holalkere N, Setty BN. Emergent spinal MRI in IVDU patients presenting with back pain: do we need an MRI in every case? Emerg Radiol 2018;25:247-56.</p>
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2) <span style="font-family: Calibri, sans-serif;">Davis DP, Salazar A, Chan TC, Vilke GM. 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;14:765-70.</span></p>
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