What outcome measures are commonly used to evaluate ASP success?

The correct choice identifies reduction in antibiotic resistance rates as a key outcome measure for evaluating the success of an Antimicrobial Stewardship Program (ASP). This is because one of the primary goals of ASPs is to optimize the use of antibiotics to not only improve individual patient outcomes but also to prevent the development and spread of antibiotic resistance.

When an ASP successfully promotes appropriate prescribing practices—such as prescribing the right antibiotic at the right dose and for the correct duration—this leads to a more effective treatment of infections while minimizing the selective pressure on bacteria that often results from unnecessary or improper antibiotic use. Consequently, over time, a reduction in resistance rates can be observed, which reflects the program's efficacy.

In contrast, increased overall antibiotic usage would typically indicate a failure of an ASP, as the program aims to reduce unnecessary antibiotic prescriptions. Decreased patient satisfaction does not correlate with ASP outcomes; rather, a successful ASP should maintain or improve patient satisfaction through effective and appropriate treatment. Lastly, the length of hospital stay for all patients is not a targeted measure directly tied to ASPs; it varies widely based on numerous factors and does not specifically reflect the stewardship of antibiotic use. Therefore, focusing on reducing antibiotic resistance rates directly ties to the objectives of an Antimicrobial Steward