Admit Versus Discharge-A Cost Analysis of Infants 29 to 60 Days Old With Febrile Urinary Tract Infection at Low Risk for Bacteremia

Abstract

Background: Ninety percent of infants 29 to 60 days old presenting to the emergency department with fever and urinary tract infection are admitted due to fear of concomitant bacteremia. Many of these infants are at low risk for bacteremia and can be safely discharged with no heightened risk of adverse events. This study sought to estimate the potential savings from outpatient management of low-risk infants.

Methods: A comparative cost analysis was performed using bacteremia probability estimates from a previously published prediction model. We estimated costs using a national pediatric database coupled with retrospective chart review of infants who presented to our emergency department between 2011 and 2015.

Results: The relative cost savings for the discharge strategy were $80,333 ($19,127 vs $99,460; 80% savings) for each patient with bacteremia and $257,073 per 100 patients overall. Similar savings were found for charges-$304,949 ($71,421 vs $376,371; 80%) for each patient with bacteremia and $975,838 per 100 patients. Our institutional reimbursements provided an estimated savings of $148,924 ($73,280 vs. $222,204; 67%) and $476,533 per 100 patients overall.

Conclusions: The relative cost savings from discharging rather than admitting low-risk infants with febrile urinary tract infection were significant, even accounting for expenditures associated with the return emergency room visit of initially discharged bacteremic patients. These savings are achievable without an increase in adverse events. Similar outcomes were demonstrated for hospital charges and reimbursements, further strengthening these results. This study emphasizes how risk stratification in clinical decision-making can lead to substantial cost savings without compromising patient outcomes.

Keywords: adverse events; bacteremia; costs; decision analysis; infants; meningitis; prediction model; risk stratification; urinary tract infection.