How to Save Half a Million Dollars: An Antimicrobial Stewardship Program in a Tertiary Care Center

We started a quality improvement project (QIP) with the aim of implementing an antimicrobial stewardship program (AMSP) to optimize antimicrobial use. We implemented this QIP in our tertiary care center with baseline data from July 1, 2017, to December 31, 2017 (pre-AMSP period), and the project period between January 1, 2018, and June 30, 2018. It covered every inpatient with a positive microbiological culture and patients who were initiated on a pre-selected list of 16 restricted antimicrobials. Numerous plan-do-study-act (PDSA) cycles were conducted alongside daily AMSP rounds, consisting of prospective audit and feedback to all stakeholders. The outcome measures used were antibiotic consumption and costs, Clostridium difficile infection (CDI) rates, the average length of stay (LOS), and adverse drug reaction (ADR) reporting rates. We demonstrated a considerable reduction in the consumption of the selected antibiotics, as well as a direct translation to cost-saving. The AMSP directly contributed to collective savings of around half a million US dollars in hospital bills for patients. We also demonstrated reduced average LOS, CDI rates, and increased reporting of ADRs to antibiotics. The reduction in average LOS was also directly beneficial to patients with reduced time spent in the hospital. The reduction in CDI rates proves that there is a reduction in the development of AMR, and in the short term, fewer incidences of healthcare-associated infections. This, in addition to better surveillance of ADRs to antimicrobials, improved patient safety and quality of care.