Association of systemic antimicrobials with the expression of beta-lactamases in bacteria cultured from urological patients.
Diagn Microbiol Infect Dis 2019;
94:391-394. [PMID:
30890298 DOI:
10.1016/j.diagmicrobio.2019.02.007]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/01/2019] [Accepted: 02/02/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND
Patients with abnormalities of the genitourinary tract are at high risk for infections with antimicrobial-resistant pathogens.
METHODS
All urine cultures ordered by members of the Division of Urology from four quarterly one-week periods were included. All gram-negative bacilli isolated were analyzed using the Check-Points Check-MDR CT103XL assay to identify the presence of genes associated with resistance to beta-lactam antibiotics. Association between the days of antibiotics and the presence of an ESBL-producing organism was determined.
RESULTS
One hundred eleven positive cultures were included in this analysis, of which 5 (4.5%) contained ESBL-producing species. Days of systemic antibiotics within 30 days of urine culture was associated with an increased risk of isolating an ESBL-producing pathogen.
CONCLUSION
The overall prevalence of ESBL-producing organisms is low in this cohort. The number of days of systemic antibiotics within 30 days of a urine culture was significantly associated with increased risk of isolating an ESBL-producing organism.
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