Impact of a multistep urinary tract infection-focused disease state stewardship initiative on the treatment of asymptomatic urinary presentations: a retrospective cohort study.
Christian Tyler Pitcock, Danielle Casaus, Sarah E Garvey, Katie Ruf, Donna R Burgess, Jeremy D VanHoose, David S Burgess, Ryan Mynatt, Armaghan-E-Rehman Mansoor, Nicholas Van Sickels, Mitu Karki Maskey, Thein Myint, Aric Schadler, Katie L Wallace
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Abstract
Background: Asymptomatic bacteriuria (ASB) is often overtreated, risking patient harm through unnecessary antimicrobial use and fostering antimicrobial resistance. Despite this, patients continue to be treated for ASB requiring targeted intervention for antimicrobial stewardship teams across health systems.
Objectives: This study assessed the impact of a multistep urinary tract infection (UTI)-focused stewardship initiative by comparing the incidence of asymptomatic urinary presentation (AUP) treatment before and after implementation.
Design: Retrospective cohort study.
Methods: Patients ⩾18 years at University of Kentucky HealthCare who received antimicrobial therapy with a urinalysis (UA) and/or urine culture (UCx) collected for a presumed UTI between January 2023 and March 2023 (pre-implementation) and January 2024 and March 2024 (post-implementation) were included in the study. Our primary outcome was to compare the frequency of AUP treatment between groups.
Results: Overall, 288 patients were included in the study, with 144 patients in both the pre- and post-implementation groups. Treatment of AUPs significantly decreased by 12% after initiative implementation (47% pre-implementation vs 35% post-implementation, p = 0.042). Additionally, we observed a significant difference in guideline-adherent management between the two groups (29% pre-implementation vs 44% post-implementation, p = 0.007). Patients were more likely to receive guideline-adherent UTI treatment durations (38% vs 53%, p = 0.009) and guideline-adherent definitive antibiotics (18% vs 35%, p < 0.001) post-implementation compared to pre-implementation.
Conclusion: Our stewardship initiative resulted in reduced treatment of AUPs and improved adherence to UTI management guidelines. Overall, a multifaceted stewardship initiative is a successful intervention to decrease the treatment of AUPs and unnecessary antibiotic utilization. However, additional frontline stewardship initiatives are likely warranted to decrease the unnecessary ordering of UAs.
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