Evidence map›Paper›PMID 27927926›Full record

ArticleJournal of clinical microbiology2017

Clinical and Microbiological Aspects of β-Lactam Resistance in Staphylococcus lugdunensis.

Ian H McHardy, Jennifer Veltman, Janet Hindler, Katia Bruxvoort, Marissa M Carvalho, Romney M Humphries

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 19% of its field
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Global prevalence of macrolide-resistantFrontiers in microbiology · 2025
    Pooled it
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  10. Comparative Genome Analysis ofFrontiers in microbiology · 2019
    Article
  11. Review
  12. Missouri medicine
    Article
  13. Coagulase-negative staphylococci: a 20-year study on the antimicrobial resistance profile of blood culture isolates from a teaching hospital.The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases
    Article
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 at 4 institutions in 2 countries.

Ian H McHardyMedical Microbiology and Immunology, UC Davis, Davis, California, USA.
Jennifer VeltmanDetroit Medical Center, Wayne State University, Detroit, Michigan, USA.
Janet HindlerPathology and Laboratory Medicine, UCLA, Los Angeles, California, USA.
Katia BruxvoortDepartment of Global Health and Development, Faculty of Public Health Policy, London School of Hygiene and Tropical Medicine, London, United Kingdom.
Marissa M CarvalhoPathology and Laboratory Medicine, UCLA, Los Angeles, California, USA.
Romney M HumphriesPathology and Laboratory Medicine, UCLA, Los Angeles, California, USA rhumphries@mednet.ucla.edu.
University of California, Los Angeles · USFaculty of Public Health · GBUniversity of California, Davis · USWayne State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Antimicrobial susceptibility results from broth microdilution MIC testing of 993 Staphylococcus lugdunensis isolates recovered from patients at a tertiary care medical center from 2008 to 2015 were reviewed. Ninety-two oxacillin-susceptible isolates were selected to assess the accuracy of penicillin MIC testing, the penicillin disk diffusion test, and three β-lactamase tests, including the cefoxitin-induced nitrocefin test, penicillin cloverleaf assay, and penicillin disk zone edge test. The results of all phenotypic tests were compared to the results of blaZ PCR. The medical records of 62 patients from whom S. lugdunensis was isolated, including 31 penicillin-susceptible and 31 penicillin-resistant strains, were retrospectively reviewed to evaluate the clinical significance of S. lugdunensis isolation, the antimicrobial agents prescribed, if any, and the clinical outcome. MIC testing revealed that 517/993 (52.1%) isolates were susceptible to penicillin and 946/993 (95.3%) were susceptible to oxacillin. The induced nitrocefin test was 100% sensitive and specific for the detection of β-lactamase compared to the blaZ PCR results, whereas the penicillin disk zone edge and cloverleaf tests showed sensitivities of 100% but specificities of only 9.1% and 89.1%, respectively. The penicillin MIC test had 100% categorical agreement with blaZ PCR, while penicillin disk diffusion yielded one major error. Only 3/31 patients with penicillin-susceptible isolates were treated with a penicillin family antimicrobial. The majority of cases were treated with other β-lactams, trimethoprim-sulfamethoxazole, or vancomycin. These data indicate that nearly all isolates of S. lugdunensis are susceptible to narrow-spectrum antimicrobial agents. Clinical laboratories in areas with resistance levels similar to those described here can help promote the use of these agents versus vancomycin by effectively designing their antimicrobial susceptibility reports to convey this message.

Indexed as

beta-Lactam ResistanceAnti-Bacterial Agentsbeta-LactamasesFemaleHumansMaleMicrobial Sensitivity TestsMiddle AgedOxacillinPenicillinsPolymerase Chain ReactionRetrospective StudiesStaphylococcal InfectionsStaphylococcus lugdunensisTertiary Care CentersAnti-Bacterial Agentsbeta-LactamasesOxacillinPenicillinsantimicrobial resistancebeta-lactamslugdunensisStaphylococcus

Identifiers

PMID27927926
PMCPMC5277529
OpenAlexW2560257972

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.