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OBJECTIVES: Prosthetic joint infection is usually treated using surgery and antibiotics. The response to the treatment regimen is often evaluated using serial monitoring of plasma C-reactive protein (CRP) concentrations. In order to examine how useful this monitoring is, we calculated the sensitivity and specificity of CRP concentrations for predicting treatment failure. PATIENTS AND METHODS: We examined 3732 CRP measurements from 260 patients who were treated by either two-stage revision or debridement and retention. We tested the association between CRP concentration and outcome using logistic regression models, and assessed sensitivity and specificity by using receiver operator curves. RESULTS: The areas under receiver operator curves for CRP concentrations predicting outcome ranged from 0.55 to 0.65. CONCLUSIONS: CRP concentrations did not accurately predict treatment failure. Serial monitoring may not be of benefit.

Original publication

DOI

10.1093/jac/dkr182

Type

Journal article

Journal

J Antimicrob Chemother

Publication Date

07/2011

Volume

66

Pages

1590 - 1593

Keywords

C-Reactive Protein, Drug Monitoring, Humans, Osteoarthritis, Prosthesis-Related Infections, Sensitivity and Specificity, Treatment Outcome