Effect and sustainability of a stepwise implemented multidisciplinary antimicrobial stewardship programme in a university hospital emergency department.

Objectives: To explore effectiveness and sustainability of guideline adherence and antibiotic consumption after establishing treatment guidelines and initiating antimicrobial stewardship (AMS) ward rounds in a university hospital emergency department (ED).

Methods: Data were gathered retrospectively from 2017 to 2021 in the LMU University Hospital in Munich, Germany. Four time periods were compared: P1 (pre-intervention period); P2 (distribution of guideline pocket cards); P3 (reassessment after 3 years); and P4 (refresher of guideline pocket cards and additional daily AMS ward rounds for different medical disciplines).