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Preliminary readings of antimicrobial susceptibility panels: A simple, fast and inexpensive way to detect bacterial resistance and enhance antibiotic treatment of bloodstream infections.

Author information

Affiliations

  • 1. UGC Biotecnología, Complejo Hospitalario Torrecárdenas, Servicio Andaluz de Salud, Almería, Spain.
      Authors
    • Sánchez Yebra W 1
    • Del Gigia Aguirre L 1
    • Cabezas Fernández T 1
    • Sánchez Gómez J 1
    • de Lamo Sevilla C 1
    • Rodríguez Maresca M 1
    (6 authors)
  • 2. Departamento de Microbiología, Facultad de Medicina, Universidad de Granada, Granada, Spain.
      Authors
    • Obelleiro Campos AX 2
    • Gutiérrez Fernández J 2
    (2 authors)

ORCIDs linked to this article

Diagnostic Microbiology and Infectious Disease, 07 Mar 2019, 94(4):398-402
https://doi.org/10.1016/j.diagmicrobio.2019.03.001 PMID: 30929996 

Abstract 

Increasing incidence of resistant bacteria needs faster identification (ID) and antibiotic susceptibility testing (AST) in order to improve antimicrobial treatment of severe infections. We propose a preliminary reading of the AST MicroScan® panels coupled with mass spectrometry ID. A total of 157 bacterial clinical isolates were processed for routine ID and AST (in 22 cases, ID and AST were performed directly from positive blood culture bottles). For gram-negatives, data from the initial and final readings were recorded and compared [89.9% category agreement (CA), 6.9% very major errors (VME)]. In adition all the 32 ESBL producers were detected at 5.3-8.6 hours. For Staphylococcus aureus, all the 16 MRSA isolates were detected at 4.5 to 7.5 hours. Thus, we find our preliminary readings approach as a simple, inexpensive and reliable way to detect and identify the most prevalent resistant bacteria in our institution on the same day that ID/AST is performed.

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Read article at publisher's site: https://doi.org/10.1016/j.diagmicrobio.2019.03.001

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