Hospital Wide Roll-Out of Antimicrobial Stewardship

Hospital Wide Roll-Out of Antimicrobial Stewardship: A Stepped Wedge Randomized Controlled Trial

Dramatic increases in antibiotic utilization in hospitals continue to drive antibiotic resistance among hospital-acquired pathogens. However, 30-50% of the antibiotic use in hospitals is unnecessary or inappropriate. The Infectious Diseases Society of America has published guidelines stating that all hospitals should develop an institutional program to enhance antimicrobial stewardship. At Sunnybrook Health Sciences Centre, an antibiotic stewardship audit-and-feedback intervention for all patients reaching their third or tenth day of broadspectrum antibiotic use in intensive care, resulted in a reduction of antibiotic use, antibiotic costs, and Clostridium difficile infections in the intensive care unit. The investigators hypothesize that this intervention will result in similar benefits outside of the intensive care unit, and so expanded the intervention to non-ICU medical and surgical wards. To increase the rigor of our program evaluation, the roll-out was conducted in a stepped-wedge randomized controlled design.

All patients admitted to the medical/surgical services will be included in statistical analysis of program evaluation. The inclusion/exclusion criteria below, just define who receives the antibiotic stewardship intervention on each service.

Inclusion Criteria:

• admitted to one of these services: general internal medicine, cardiology, nephrology, orthopedic surgery, neurosurgery, general surgery or trauma surgery
• receiving 3rd or 10th day of treatment with one of the following antibiotics:
• ceftriaxone, ceftazidime, piperacillin-tazobactam, ciprofloxacin, levofloxacin, meropenem, ertapenem, vancomycin

Exclusion Criteria:

• patient being followed by the infectious diseases consult service