Swiss medical weekly · 2024
Quantifying aminoglycoside resistance in extended-spectrum beta-lactamase (ESBL)-producing Enterobacterales clinical isolates: a retrospective cohort study.
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Vock Isabelle, Aguilar-Bultet Lisandra, Khanna Nina, Egli Adrian, Wehrle-Wieland Elisabeth, Tamma Pranita D, Tschudin Sutter Sarah
Аннотация
AIMS: Aminoglycoside resistance is frequently detected in extended-spectrum-beta-lactamase (ESBL)-producing Enterobacterales (ESBL-PE), questioning the appropriateness of aminoglycosides as empiric therapy in patients with suspected ESBL-PE infections. Therefore, we aimed to evaluate the frequency of aminoglycoside resistance in patients harbouring ESBL-PE and identify patient-related risk factors associated with aminoglycoside resistance to facilitate early detection of at-risk patients.
METHODS: This retrospective single-centre cohort study included hospitalised patients aged ≥18 years with an ESBL-PE-positive sample between January 2016 and December 2018. Aminoglycoside resistance was defined according to the European Committee on Antimicrobial Susceptibility Testing (EUCAST) clinical breakpoints for Enterobacterales for the current year of testing.
RESULTS: Five hundred forty-four patients met the eligibility criteria, of which 240 (44.1%) harboured aminoglycoside-resistant ESBL strains. Identification of ESBL-Klebsiella pneumoniae was significantly associated with aminoglycoside resistance (odds ratio [OR] = 2.64, 95% confidence interval [CI] = 1.65-4.21, p <0.001) and an international travel history within the past 12 months was marginally associated with aminoglycoside resistance (OR = 1.51, 95% CI = 0.95-2.42, p = 0.084).
CONCLUSIONS: In a low ESBL endemicity setting, aminoglycoside resistance in patients harbouring ESBL-PE is common, especially ESBL-K. pneumoniae, and needs to be considered in clinicians' decision-making regarding empiric therapy regimens.
METHODS: This retrospective single-centre cohort study included hospitalised patients aged ≥18 years with an ESBL-PE-positive sample between January 2016 and December 2018. Aminoglycoside resistance was defined according to the European Committee on Antimicrobial Susceptibility Testing (EUCAST) clinical breakpoints for Enterobacterales for the current year of testing.
RESULTS: Five hundred forty-four patients met the eligibility criteria, of which 240 (44.1%) harboured aminoglycoside-resistant ESBL strains. Identification of ESBL-Klebsiella pneumoniae was significantly associated with aminoglycoside resistance (odds ratio [OR] = 2.64, 95% confidence interval [CI] = 1.65-4.21, p <0.001) and an international travel history within the past 12 months was marginally associated with aminoglycoside resistance (OR = 1.51, 95% CI = 0.95-2.42, p = 0.084).
CONCLUSIONS: In a low ESBL endemicity setting, aminoglycoside resistance in patients harbouring ESBL-PE is common, especially ESBL-K. pneumoniae, and needs to be considered in clinicians' decision-making regarding empiric therapy regimens.