Long-Term Impacts of a Targeted Intervention in the Emergency Department on Inpatient Prescribing Practices

Background: In 2009, researchers successfully implemented an intervention to decrease the inappropriate prescribing of multivitamin infusions (MVIs) in the emergency department (ED) for patients presenting with alcohol-related illnesses. Objective: The purposes of our study were to determine the impact of the 2009 intervention on hospital-wide prescribing practices of vitamin therapies for alcohol-related illnesses, and to evaluate its long-term sustainability. Methods: A retrospective observational cohort study was conducted at a 60,000-visit ED, 811-bed academically-affiliated tertiary referral hospital with an average census of 515 and 714 patients in 2009 and 2019, respectively. Patients were included if they presented to the ED from 2009 to 2019 with an alcohol-related illness as defined by ICD-9 and ICD-10 codes. The primary outcome was the change in the monthly average of MVIs ordered inpatient within the first four months compared to the last four months of the study period. Secondary outcomes included changes in the mean distribution (MD) per month of thiamine administrations in the ED and inpatient setting, and MVIs ordered in the ED. Results: The MD of MVIs ordered per month decreased by 3.5% (95% CI -5.3, -1.7) in the inpatient setting and decreased by 1.4% (95% CI -2.5, -.3) in the ED from the beginning to the end of our study period. Conclusions: This study suggests the effects of an intervention made in the ED sustained impact over a 10-year timeframe, and decreased the use of MVIs in both the ED and hospital-wide.