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Background Antimicrobial stewardship programs (ASPs) often utilize Infectious Diseases fellows (IDFs) to cover pre-authorization processes during evening and weekend hours. IDFs often provide ASP coverage in addition to their inpatient consult roles. In response to increasing consult volume, we worked with our fellowship program to relieve IDFs of evening and weekend coverage (a decrease in fellow coverage by 26 hours per week) starting in October 2017. Members of the ASP assumed the majority of these evening and weekend hours. Additional post-prescriptive activities and a rotation in Infection Control and Antimicrobial Stewardship were implemented in response. We sought to analyze the impact of this intervention. Methods Intervention and medication data were extracted from the electronic medical record during 1 July 2017 through 30 September of 2017 (IDF Coverage) and the same 3 months of 2018 (ASP Coverage). Comparisons between the two periods were performed using descriptive statistics of the number of interventions, number of weekend interventions, types of interventions, and days of therapy (DOT; per 1000 patient-days). Results Comparing July-September of 2017 and 2018, total ASP interventions increased 16% (1192 to 1391); weekend ASP interventions increased 75% (139 to 243). The most common interventions were “Choice of Therapy” (41% in both years), “De-Escalation” (17% in 2017, 16% in 2018), and “Dose/Interval Optimization” (10% in both years). The most intervened agents were piperacillin–tazobactam, cefepime, vancomycin, meropenem, and ceftazidime. Comparing the same time periods, total antibiotic DOT decreased 4% (714.1 to 684.9). There was a 28% decrease in piperacillin–tazobactam (41.47 to 29.85), 19% decrease in meropenem (28.08 to 22.61), and 7% decrease in vancomycin (125.09 to 116.17) use. Ceftazidime was unchanged (18.13 to 18.08). Cefepime increased by 9% (56.78 to 61.97). Conclusion Relieving IDFs of evening and weekend ASP coverage during busy inpatient consult rotations may help decrease burnout. The assumption of these hours by dedicated members of ASP led to an increase in documented total and weekend ASP interventions. In addition, the change was associated with a relative decrease in piperacillin–tazobactam, meropenem, and vancomycin use. Disclosures All authors: No reported disclosures.

1092. Impact of Relieving Infectious Diseases Fellows from Off-Hour/Weekend Antimicrobial Stewardship Coverage