The concept of antibiotic stewardship has a far-reaching history in hospital healthcare, dating back to the penicillin era in the 1940s. The rise of antibiotic resistance was first observed with the widespread use of penicillin, with British bacteriologist Mary Barber conducting notable studies on the resistance of Staphylococcus aureus. Antibiotic misuse leading to resistance was also a significant concern, as highlighted by Alexander Fleming, who discovered penicillin, in his Nobel lecture in 1945.
The 1950s and 1960s saw an alarming increase in hospital-acquired infections due to resistant strains, fuelled by a surge in antibiotic use. By the early 1980s, concerted efforts were initiated to promote cautious antibiotic usage by organizations like the Alliance for the Prudent Use of Antibiotics, founded by Stuart B. Levy. By 1996, ‘antimicrobial stewardship’ emerged as a strategic approach, encompassing correct drug choice, dosage, duration, and route, rather than merely reducing antibiotic volumes.
The need for such stewardship became evident as studies in the early 2000s revealed that 20% to 50% of antibiotic prescriptions in U.S. hospitals were either unnecessary or suboptimal. The U.S. Centers for Disease Control and Prevention (CDC) responded to this crisis by launching its first education initiative in 2009, promoting stewardship in acute care hospitals. Enhanced antibiotic use was identified as one of the four essential strategies to combat antimicrobial resistance, with the CDC outlining the ‘Core Elements of Hospital Antibiotic Stewardship Programs’ in 2014, emphasizing leadership commitment, accountability, drug expertise, action, tracking, reporting, and education.
The drive for antibiotic stewardship initiatives further intensified due to regulatory and accreditation mandates such as those set by the Joint Commission and the Centers for Medicare and Medicaid Services. Modern hospital stewardship programs encompass a diverse range of organizational structures and interventions, with physician and pharmacist leaders responsible for tracking key metrics, reporting, providing education, and ensuring accountability.
These stewardship programs have significantly improved clinical outcomes, reduced treatment failures and hospital stays, and lowered costs, while also contributing to slowing the emergence of resistance in specific settings. However, challenges persist, such as antibiotic overuse, clinician behavior, pervasive inappropriate prescribing, and the need for new antimicrobials. Addressing these issues require continuous adaptation and support of antibiotic stewardship initiatives.
In conclusion, antibiotic stewardship plays a vital role in hospital medicine as it safeguards patient care, reduces adverse events, and sustains antibiotic effectiveness. However, it remains an evolving discipline, with implementation disparities necessitating more significant resources for smaller hospitals and those located in rural areas to facilitate more robust and equitable implementation.