This quality improvement study will assess the antimicrobial use and prescribing practices of hospital and community prescribers for the ambulatory hemodialysis (HD) population in an urban academic outpatient HD unit in Ontario. Currently, in the outpatient HD unit at Toronto General Hospital (TGH), it is the standard of care for the patients to be screened on a weekly basis by the nephrology care team for the use of any oral or intravenous antimicrobials. Patient charts, pharmacy patient profiles and electronic medical records for these patients from September 1 2016 - April 30 2017 will be retrospectively reviewed in order to characterize antimicrobial use and its concordance with available clinical guidelines and antimicrobial stewardship principles described by the Centers for Disease Control and Prevention (CDC). The primary objective of the study is to determine the prevalence of antimicrobial use in an ambulatory HD population. The secondary objective of the study is to determine the congruence of prescribed antimicrobial regimens with available clinical guidelines and antimicrobial stewardship principles described by the CDC. It is hypothesized that antimicrobial use among HD patients will be common and that antimicrobial prescribing practices are not congruent with recommendations from published clinical guidelines and antimicrobial stewardship principles for a significant proportion of patients included in the retrospective review. Descriptive analysis of the data will summarize the findings. Future research will build upon the results of this project, and may include the development of interventions that target gaps in knowledge and prescribing behaviours of prescribers who provide care to the ambulatory HD population.