A working diagnosis passed to the next shift arrives without the reasoning that produced it. The receiving physician inherits a label and, usually, the confidence that came attached to it, which is how a reasonable first impression becomes an unexamined one by the third handover.
The cheap correction is a single line in the note: what would change this diagnosis. Not a differential list - a falsifier. If the lactate is still 4 at six hours, this is not simple dehydration. If the fever persists past 48 hours on this antibiotic, the source is not the chest. If the creatinine has not moved by morning, this is not pre-renal.
It takes one sentence, it gives the next physician permission to disagree without appearing to second-guess a colleague, and it converts a diagnosis from a conclusion into something testable. It is also the only part of your reasoning that survives you going home.
- Add one line to the note naming what finding would overturn the working diagnosis.
- Make it a specific falsifier with a number and a time, not a list of alternatives.
- State it aloud at handover, so the next physician knows disagreement is expected.
- Revisit it explicitly on the post-take round rather than letting it lapse.
- If you cannot name a falsifier, you may not yet have a diagnosis.
Why it matters
A diagnosis handed on without its reasoning hardens into fact by the third shift, and nobody remembers that it was ever provisional.
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