1877. Evaluation of Antibiotic Utilization After Introduction of a Dedicated Infectious Diseases-Critical Care Medicine Service in Critical Care Units

BACKGROUND: Infection is a leading cause of admission to intensive care units (ICU), with critically ill patients often receiving a high volume of empiric broad-spectrum antibiotics. Nevertheless, a dedicated infectious diseases (ID) consultation and stewardship team is not routinely implemented. An ID-Critical Care Medicine (ID-CCM) pilot program was designed at a large tertiary hospital in which an ID attending was assigned to participate in daily rounds with the ICU team, as well as provide an ID consult on select patients. We sought to evaluate the impact of this dedicated ID consultation and stewardship program on antibiotic utilization in the ICU. METHODS: This is an IRB-approved single-site retrospective study. We analyzed antibiotic utilization in the ICU during the post-intervention period from January 1, 2017 to December 31, 2017 and compared it to antibiotic utilization in the same ICU during the pre-intervention period from January 1, 2015 to December 31, 2015. Using Poisson regression analysis, we evaluated antibiotic utilization of each agent, expressed as days of therapy (DOT) per 1,000 patient-days, between the two groups. RESULTS: The six most commonly used broad-spectrum antibiotic agents were included in the final analysis. During the intervention period, statistically significant reductions were seen in cefepime (131 vs. 101 DOT per 1,000 patient-days, P = 0.01), piperacillin-tazobactam (268 vs. 251 DOT per 1,000 patient-days, P = 0.02) and vancomycin (265 vs. 228 DOT per 1,000 patient-days, P = 0.01). The utilization of other antibiotics including daptomycin, linezolid, and meropenem did not differ significantly (Figure 1). CONCLUSION: With this multidisciplinary intervention, we saw a decrease in the use of the most frequently administered broad-spectrum antibiotics. Our study shows that the implementation of an ID-CCM service is a feasible way to promote antibiotic stewardship in the ICU and can be used as a strategy to reduce unnecessary patient exposure to broad-spectrum agents. [Image: see text] DISCLOSURES: All Authors: No reported Disclosures.