وثيقة

Evaluation of in vitro activity of ceftazidime/avibactam and ceftolozane/tazobactam against ESBL-producing enterobacterales isolated from intensive care units from Qatar.

المعرف
DOI 10.5001/omj.2022.89
المساهمون
الناشر
Oman Medical Specialty Board.
ميلادي
2022-09
اللغة
الأنجليزية
الملخص الإنجليزي
Objectives: Extended-spectrum β-lactamases (ESBLs) mechanism of resistance in Enterobacterales leads to poor clinical outcomes. Ceftazidime/avibactam and ceftolozane/tazobactam are two broad-spectrum antimicrobial combinations that are effective against multidrug-resistant organisms with regional variations. This study aims to evaluate the antimicrobial susceptibility test (AST) for both combinations against ESBL-producing Enterobacterales isolated from intensive care units (ICUs) in tertiary hospitals from November 2012 to October 2013 in Qatar. Methods: A total of 629 Enterobacterales isolates from ICUs were screened for ESBL production using BD PhoenixTM confirmed by double-disk potentiation, while ESBL-genes were detected by polymerase chain reaction. The ASTs for ceftazidime/avibactam and ceftolozane/ tazobactam were assessed by minimum inhibitory concentration (MIC) test strips. A single isolate that was resistant to both combinations was subjected to whole-genome sequencing. Results: The prevalence of ESBL-producing Enterobacterales isolated from ICUs was 17.3% (109/629) with predominance of Klebsiella pneumoniae (56/109; 51.4%) and Escherichia coli (38/109; 34.9%). The susceptibility of ceftazidime/ avibactam and ceftolozane/tazobactam against ESBL-producers was 99.1% (108/109) and most (81/109; 74.3%) had MICs < 0.5 for both combinations. The predominant ESBL-gene was blaCTX-M (72/109; 66.1%). A single isolate that was resistant to both combinations harbored multiple ESBL resistant-genes including blaVEB-5 and blaVIM-2. Conclusions: ESBL-producing Enterobacterales isolated from ICUs were predominantly K. pneumoniae and E. coli, mainly harboring blaCTX-M gene. They were highly susceptible to ceftazidime/avibactam and ceftolozane/tazobactam suggesting potential alternatives to currently available therapeutic options.
قالب العنصر
مقالات الدوريات

مواد أخرى لنفس الموضوع

مقالات الدوريات
0
0
Sultan, Amira M.
College of Medicine, Sultan Qaboos University.
2018-02
الرسائل والأطروحات الجامعية
2
0
Al-Mamariyah, Azza Mohammed Khalifa.
Sultan Qaboos University.
2022
الرسائل والأطروحات الجامعية
0
0
Al-Lamkyah, .Ruwaida Naseer
Sultan Qaboos University
2009