Abstract

Introduction: Treatment of asymptomatic bacteriuria remains prevalent despite recommendations against treatment in most patient populations. Rates of asymptomatic treatment of urinary tract infection (UTI) has not been thoroughly evaluated within the inpatient psychiatry population. The objective of this study is to describe the rate of antibiotic use for the treatment of asymptomatic UTI in psychiatric inpatients and investigate factors contributing to overuse. Methods: This IRB approved retrospective cohort study evaluated adults admitted to inpatient psychiatry from May 1, 2021 to May 1, 2022 that received an antibiotic for UTI. The primary outcome assessed the rate of asymptomatic treatment, defined as treatment without urinary symptoms. Secondary outcomes evaluated most frequently prescribed antibiotics, determined the impact of altered mental status (AMS) on treatment, and correlated the incidence of UTI treatment with primary psychiatric disorder. Results: One hundred nine patients were identified and 61 were included for analysis. The rate of asymptomatic treatment for UTI was 84%. The most prescribed antibiotic was nitrofurantoin (48%). All patients with AMS (23%) were asymptomatic. Altered mental status did not significantly impact the rate of empiric treatment (P = .098). Primary psychiatric disorder did not significantly impact rate of empiric treatment for UTI (P = .696). Common disorders in this population were depression, schizophrenia, and bipolar disorder with rates of asymptomatic treatment of 79% (n = 19), 87% (n = 13), and 78% (n = 7), respectively. Discussion: Frequent asymptomatic treatment of UTI was identified in this inpatient psychiatry population. These results emphasize the need for antibiotic monitoring and stewardship in this setting.

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