Performance of automated multiplex polymerase chain reaction (mPCR) using synovial fluid in the diagnosis of native joint septic arthritis in adults

The Bone & Joint Journal
Irene Katharina SigmundR Windhager

Abstract

This study aimed to assess the performance of an automated multiplex polymerase chain reaction (mPCR) technique for rapid diagnosis of native joint septic arthritis. Consecutive patients with suspected septic arthritis undergoing aseptic diagnostic joint aspiration were included. The aspirate was used for analysis by mPCR and conventional microbiological analysis. A joint was classed as septic according to modified Newman criteria. Based on receiver operating characteristic (ROC) analysis, the area under the ROC curve (AUC) values of the mPCR and the synovial fluid culture were compared using the z-test. A total of 72 out of 76 consecutive patients (33 women, 39 men; mean age 64 years (22 to 92)) with suspected septic arthritis were included in this study. Of 72 patients, 42 (58%) were deemed to have septic joints. The sensitivity of mPCR and synovial fluid culture was 38% and 29%, respectively. No significant differences were found between the AUCs of both techniques (p = 0.138). A strong concordance of 89% (Cohen's kappa: 0.65) was shown. The mPCR failed to detect Staphylococcus aureus (n = 1) and Streptococcus pneumoniae (n = 1; no primer included in the mPCR), whereas the synovial fluid culture missed six microorganisms (po...Continue Reading

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Citations

Oct 1, 2020·The Bone & Joint Journal·S-T Jerry TsangA Hamish R W Simpson
Jan 11, 2021·Journal of Experimental Orthopaedics·Elizabeth H G TurnerAndrea M Spiker
Mar 2, 2021·The Bone & Joint Journal·Daniel C PerryFares S Haddad
Dec 8, 2020·The American Journal of Emergency Medicine·Adam HolzmeisterWilliam D Lack

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