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Antimicrobial susceptibility of bacterial isolates from ambulatory practice and from a referral hospital

Potier, Julie F. N. ; Durham, Andy E.

Journal of veterinary internal medicine, 2020-01, Vol.34 (1), p.300-306 [Periódico revisado por pares]

Hoboken, USA: John Wiley & Sons, Inc

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  • Título:
    Antimicrobial susceptibility of bacterial isolates from ambulatory practice and from a referral hospital
  • Autor: Potier, Julie F. N. ; Durham, Andy E.
  • Assuntos: Animals ; Anti-Bacterial Agents - pharmacology ; Antimicrobial agents ; antirobial ; Bacteria ; Bacteria - drug effects ; Bacterial infections ; Biopsy ; Clinical isolates ; Drug Resistance, Bacterial ; EQUID ; Gentamicin ; horse ; Hospitals, Animal ; Laboratories ; MIC ; Minimum inhibitory concentration ; Penicillin ; Population ; practice ; resistance ; Retrospective Studies ; Software ; Sulfamethoxazole ; Trimethoprim ; Veterinary medicine
  • É parte de: Journal of veterinary internal medicine, 2020-01, Vol.34 (1), p.300-306
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Background Responsible use of antimicrobials in equine practice relies on knowledge of common bacterial isolates and their antimicrobial sensitivities. Objectives To assess the frequency of bacterial resistance to a combination of parenteral penicillin and gentamicin and to trimethoprim and sulfamethoxazole for PO use in a selection of clinical isolates, and subsequently to determine the prevalence of resistance to antimicrobials that might then be used as alternatives to first‐line antimicrobials for the same isolates. Methods Retrospective analysis of minimal inhibitory concentrations (MICs) of antimicrobials for 6354 bacterial isolates from 365 ambulatory practices and 519 isolates from a referral hospital. The MICs were used to indicate sensitivity or resistance to commonly used antimicrobials and the prevalences of resistance were compared between origin of the isolates, and among antimicrobial drugs. Results Isolates from the referral hospital were significantly (P < .05) more likely to be resistant to the antimicrobials tested than those derived from ambulatory practice. Overall, 91% of the ambulatory isolates and 64% of the hospital isolates were sensitive to penicillin‐gentamicin. For trimethoprim‐sulfamethoxazole combination, 82% of the ambulatory practice isolates and 56% of the referral hospital isolates were sensitive. Conclusions and Clinical Importance Most isolates were sensitive to penicillin and gentamicin as well as trimethoprim‐sulfamethoxazole. No predictable efficacious second choice antimicrobial was identified for those isolates resistant to the first‐line antimicrobials. The likelihood of isolates being sensitive to second choice antimicrobials was variable but generally higher for ambulatory isolates compared to referral isolates. Bacterial identification and measurement of MIC are essential to make the appropriate antimicrobial choice.
  • Editor: Hoboken, USA: John Wiley & Sons, Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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