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Purpose The purpose of this study was to evaluate the effect of an antimicrobial stewardship bundle on the management of asymptomatic bacteriuria (ASB). Methods In this quasi-experimental study, patients were selected by retrospective, consecutive sampling of patients with a positive urine culture report in 3 separate groups: preintervention, postdiagnostic intervention, and posteducation. Patients met the prespecified criteria for non–catheter-associated ASB. The diagnostic intervention involved a new urinalysis/urine culture ordering process in place of urinalysis with reflex to urine culture. Additionally, an educational intervention involved pharmacist-led sessions to educate providers with patient cases and guideline-based recommendations. The primary outcome of this study was the difference in the rate of inappropriate management of ASB, defined as the use of antimicrobial agents intended to treat ASB. Secondary outcomes included length of antimicrobial therapy, length of stay, and change in urine culture orders per 1,000 patient-days. Results A total of 120 patients were included. There was a significant reduction in the inappropriate management of ASB between the preintervention and postdiagnostic intervention groups (P = 0.0349). This was not seen when comparing the postdiagnostic intervention and posteducation groups (P = 0.93). Additionally, there was a significant difference in urinalysis/urine culture ordering between the preintervention and postdiagnostic intervention groups (370 vs 224 urinalysis orders per 1,000 days present, P &amp;lt; 0.0001; 131 vs 54 urine culture orders per 1,000 days present, P &amp;lt; 0.0001). Conclusion An antimicrobial stewardship bundle involving a diagnostic stewardship intervention and pharmacist-led education reduced treatment of ASB in patients without urinary catheters.

Asymptomatic bacteriuria: Impact of an antimicrobial stewardship bundle to reduce unnecessary antibiotics in patients without urinary catheters