Evidence map›Paper›PMID 32290833›Full record

Trial reportBMC microbiology2020

Value of multiplex PCR for detection of antimicrobial resistance in samples retrieved from patients with orthopaedic infections.

Irene Katharina Sigmund, Nora Renz, Susanne Feihl, Christian Morgenstern, Sabrina Cabric, Andrej Trampuz

Registry-linked trialAbstract readClinical Trial
In one paragraph

Trial report in BMC microbiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02530229 (Early Diagnostics of Septic Arthritis and Periprosthetic Joint Infections With Calorimetry and Polymerase Chain Reaction), which is not on this map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT02530229 unknown statusnot on this map

Early Diagnostics of Septic Arthritis and Periprosthetic Joint Infections With Calorimetry and Polymerase Chain Reaction (PCR) of Synovial Aspirate Fluid

Typeobservational_patient_registrySponsorCharite University, Berlin, GermanyRan2014 to 2016Enrolled400ConditionsPeriprosthetic Joint Infection, Septic Arthritis
3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Irene Katharina SigmundCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery (CMSC), Charitéplatz 1, 10117, Berlin, Germany.
Nora RenzCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery (CMSC), Charitéplatz 1, 10117, Berlin, Germany.
Susanne FeihlCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery (CMSC), Charitéplatz 1, 10117, Berlin, Germany.
Christian MorgensternCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery (CMSC), Charitéplatz 1, 10117, Berlin, Germany.
Sabrina CabricCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery (CMSC), Charitéplatz 1, 10117, Berlin, Germany.
Andrej TrampuzCharité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery (CMSC), Charitéplatz 1, 10117, Berlin, Germany. andrej.trampuz@charite.de.

Funding

Deutsche Forschungsgemeinschaft Open Access Publication Fund of CharitéPRO-IMPLANT Foundation, Berlin N/A
6 · The paper itself

Abstract

backgroundThe performance of multiplex PCR (mPCR) for detection of antimicrobial resistance from clinical isolates is unknown. We assessed the ability of mPCR to analyse resistance genes directly from clinical samples. Patients with orthopedic infections were prospectively included. Phenotypical and genotypical resistance was evaluated in clinical samples (synovial and sonication fluid) where identical pathogens were identified by culture and mPCR.

resultA total of 94 samples were analysed, including 60 sonication fluid and 34 synovial fluid samples. For coagulase-negative staphylococcus strains, mPCR detected resistance to oxacillin in 10 of 23 isolates (44%) and to rifampin in none of 6 isolates. For S. aureus isolates, detection rate of oxacillin and rifampin-resistance was 100% (2/2 and 1/1, respectively). Fluoroquinolone-resistance was confirmed by mPCR in all 3 isolates of Enterobacteriaceae, in enterococci resistance to aminoglycoside-high level was detected in 1 of 3 isolates (33%) and in streptococci resistance to macrolides/lincosamides in none of 2 isolates. The overall sensitivity for different pathogens and antimicrobials was 46% and specificity 95%, the median concordance was 80% (range, 57-100%). Full agreement was observed for oxacillin in S. aureus, vancomycin in enterococci, carbapenems/cephalosporins in Enterobacteriaceae and rifampin in Cutibacterium species.

conclusionThe overall sensitivity for detection of antimicrobial resistance by mPCR directly from clinical samples was low. False-negative mPCR results occurred mainly in coagulase-negative staphylococci, especially for oxacillin and rifampin. However, the specificity of mPCR was high and a positive result reliably predicted antimicrobial resistance. Including universal primers in the PCR test assay may improve the detection rate but requires additional sequencing step.

trial registrationwww.clinicaltrials.gov No. NCT02530229, registered at 21 August 2015 (retrospectively registered).

Indexed as

Drug Resistance, BacterialAdultAgedAged, 80 and overAnti-Bacterial AgentsBone DiseasesEnterobacteriaceaeFemaleFracture Fixation, InternalGenotyping TechniquesHumansMaleMicrobial Sensitivity TestsMiddle AgedMultiplex Polymerase Chain ReactionProspective StudiesAnti-Bacterial AgentsAntimicrobial resistanceDiagnosisMolecular methodsMultiplex PCRPeriprosthetic joint infectionSonication

Identifiers

PMID32290833
PMCPMC7155317

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.