Predictive utility of prior positive urine culture of extended- spectrum β -lactamase producing strains

PLoS One. 2020 Dec 14;15(12):e0243741. doi: 10.1371/journal.pone.0243741. eCollection 2020.

Abstract

Rising incidence of extended- spectrum beta-lactamase (ESBL) induced urinary tract infections (UTIs) is an increasing concern worldwide. Thus, it is of paramount importance to investigate novel approaches that can facilitate the identification and guide empiric antibiotic therapy in such episodes. The study aimed to evaluate the usability of antecedent ESBL-positive urine culture to predict the pathogenic identity of future ones. Moreover, the study evaluated the accuracy of selected empiric therapy in index episodes. This was a retrospective study that included 693 cases with paired UTI episodes, linked to two separate hospital admissions within 12 month-period, and a conditional previous ESBL positive episode. Pertinent information was obtained by reviewing patients' medical records and computerized laboratory results. Multivariate analysis showed that shorter interval between index and previous episodes was significantly associated with increased chance of ESBL-positive results in current culture (OR = 0.912, 95CI% = 0.863-0.963, p = 0.001). Additionally, cases with ESBL-positive results in current culture were more likely to have underlying urological/surgical condition (OR = 1.416, 95CI% = 1.018-1.969, p = 0.039). Investigations of the accuracy of current empirical therapy revealed that male patients were less accurately treated compared to female patients (OR = 0.528, 95CI% = 0.289-0.963, p = 0.037). Furthermore, surgical patients were treated less accurately compared to those treated in internal ward (OR = 0.451, 95CI% = 0.234-0.870, p = 0.018). Selecting an agent concordant with previous microbiologic data significantly increased the accuracy of ESBL-UTIs therapy (p<0.001). A quick survey of the previous ESBL urine culture results can guide practitioners in the selection of empiric therapy for the pending current culture and thus improve treatment accuracy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Anti-Bacterial Agents / pharmacology
  • Anti-Bacterial Agents / therapeutic use
  • Bacteria / drug effects
  • Bacteria / isolation & purification
  • Bacteria / metabolism*
  • Drug Resistance, Bacterial
  • Female
  • Hospitalization
  • Humans
  • Male
  • Microbial Sensitivity Tests
  • Middle Aged
  • Retrospective Studies
  • Urinary Tract Infections / drug therapy
  • Urinary Tract Infections / etiology
  • Urinary Tract Infections / microbiology*
  • Urinary Tract Infections / urine*
  • beta-Lactamases / metabolism*

Substances

  • Anti-Bacterial Agents
  • beta-Lactamases

Grants and funding

Basima Almomani (BA) received a grant (reference number 379/2019) from Deanship of Research at Jordan University of Science and Technology, Irbid, Jordan. http://www.just.edu.jo/Pages/Default.aspx. The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript The funder provided support in the form of salaries for authors [BA, RK, RS and LA], but did not have any additional role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. The specific roles of these authors are articulated in the ‘author contributions’ section".