Most hospitals do not fail at antimicrobial stewardship because they lack good intentions. They fail because the programme is launched as a policy document rather than a working system — a guideline is circulated, a committee meets twice, and prescribing carries on unchanged. A stewardship programme only changes behaviour when it is built as a set of concrete, measurable activities with a clear owner. This is how I structure the first 90 days when advising a hospital that is starting from scratch.
Begin by establishing who is accountable. A stewardship programme needs a small multidisciplinary team — at minimum an infectious-diseases physician or clinical microbiologist and a clinical pharmacist — with an explicit mandate from hospital leadership and protected time to do the work. Stewardship done "on top of" everyone's day job quietly evaporates.
In parallel, measure where you are. The first month should produce a baseline: total antimicrobial consumption (ideally as defined daily doses per 100 patient-days), the most-used agents, and a current picture of local resistance from the microbiology laboratory. This baseline is both your starting line and the evidence you will later use to prove the programme works.
The most common early mistake is trying to do everything at once. Two interventions carry most of the early return:
Support both with a simple, locally-adapted empirical prescribing guideline built from your own resistance data. Guidelines that reflect local susceptibility are trusted and followed; generic ones are ignored.
By the third month, fold a routine antibiotic time-out into ward rounds — a checkpoint at 48–72 hours asking whether the antimicrobial is still needed, can be narrowed, or can move from intravenous to oral. Making this a habit is what sustains the programme after the initial enthusiasm fades.
Then close the loop with measurement. Report consumption and, where possible, outcome and resistance trends back to prescribers and leadership on a regular cadence. Feedback is the mechanism that changes behaviour and the argument that keeps the programme funded.
The programmes that succeed share three features: a team with genuine protected time and a leadership mandate; a deliberately narrow start that expands only once the basics work; and honest measurement that treats the baseline as a promise to be kept. The first 90 days decide whether it takes root.
This is a general framework; every programme must be scoped to the institution's context, resources, and local resistance patterns.
I advise hospitals and health ministries on antimicrobial stewardship design, surveillance, and measurement.
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