Clinical impact of the accelerate PhenoTest® BC system on patients with gram-negative bacteremia and high risk of antimicrobial resistance: a prospective before-after implementation study

Autor: Tal Brosh-Nissimov, Anka Tzur, Daniel Grupel, Amos Cahan, Nir Ma’aravi, Maya Heled-Akiva, Hasan Jawamis, Hanna Leskes, Erez Barenboim, Nadav Sorek
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Annals of Clinical Microbiology and Antimicrobials, Vol 22, Iss 1, Pp 1-9 (2023)
Druh dokumentu: article
ISSN: 1476-0711
DOI: 10.1186/s12941-023-00619-6
Popis: Abstract Background The Accelerate PhenoTest® BC system (AXDX) is a novel assay for rapid bacterial identification and antimicrobial susceptibility (AST). We report an evaluation of its impact on treatment of patients with Gram-negative bacteremia (GNB) with a high risk of antimicrobial resistance (AMR). Methods A prospective single-center evaluation before and after implementation of AXDX in addition to standard-of-care (SOC) microbiology and antimicrobial stewardship program (ASP). Patients with GNB reported during laboratory working hours and prespecified risk factors for AMR were included. The primary outcome was an ASP-oriented beneficial antimicrobial change, defined as either an escalation of an inappropriate empiric treatment or de-escalation of a broad-spectrum treatment of a susceptible organism. Main secondary outcomes were time to an appropriate treatment, antimicrobial treatment duration, length of stay (LOS) and mortality. Results Included were 46 and 57 patients in the pre- and post-intervention periods, respectively. The median time to an AST-oriented beneficial change was 29.2 h vs. 49.6 h, respectively (p
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