Detection of carbapenemases in Enterobacterales susceptible in vitro to meropenem

IF 2.6 4区医学 Q3 INFECTIOUS DISEASES

Enfermedades infecciosas y microbiologia clinica Pub Date : 2025-01-01 DOI:10.1016/j.eimc.2024.07.015

Luana Silva Dornelles , Mariana Preussler Mott , Gabriela da Silva Collar , Luciana Giordani , Rodrigo Minuto Paiva , Larissa Lutz

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引用次数: 0

Abstract

Introduction

Carbapenemase-producing Enterobacterales (CPE) is a global threat. We evaluate the prevalence of CPE among isolates categorized as meropenem-susceptible, but that meet the European Committee on Antimicrobial Susceptibility Testing (EUCAST) screening cut-off values for carbapenemase detection, and analyze the susceptibility of these isolates to new available drugs.

Methods

We analyzed 257 isolates from patients hospitalized in a tertiary hospital in Brazil, from July 2022 to April 2023. Only isolates that met the screening cut-off values established by EUCAST for detection of carbapenemases were analyzed (i.e. meropenem inhibition zones of 25–27 mm by disk diffusion). The detection of carbapenemases was performed by immnunochromatographic testing and confirmed by high-resolution melting-PCR (HRM-qPCR).

Results

We identified 12 (4.7%) CPE including 7 KPC, 4 NDM, and 1 OXA-48-like. The isolates were susceptible to ceftazidime–avibactam (72.7%), meropenem–vaborbactam (100%), imipenem–relebactam (63.6%) and ceftolozane–tazobactam (36.4%).

Conclusion

We highlight the importance of tracking carbapenemases for epidemiological control and therapeutic guidance.

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来源期刊

Enfermedades infecciosas y microbiologia clinica 医学-传染病学

CiteScore

2.10

自引率

8.00%

发文量

194

审稿时长

29 days

期刊介绍： Hoy está universalmente reconocida la renovada y creciente importancia de la patología infecciosa: aparición de nuevos agentes patógenos, de cepas resistentes, de procesos con expresión clínica hasta ahora desconocida, de cuadros de una gran complejidad. Paralelamente, la Microbiología y la Infectología Clínicas han experimentado un gran desarrollo como respuesta al reto planteado por la actual patología infecciosa. Enfermedades Infecciosas y Microbiología Clínica es la Publicación Oficial de la Sociedad Española SEIMC. Cumple con la garantía científica de esta Sociedad, la doble función de difundir trabajos de investigación, tanto clínicos como microbiológicos, referidos a la patología infecciosa, y contribuye a la formación continuada de los interesados en aquella patología mediante artículos orientados a ese fin y elaborados por autores de la mayor calificación invitados por la revista.