High-sensitivity assays measure troponin in most healthy people, which means the clinically useful distinction is no longer present or absent. A patient discharged from the emergency department with 'troponin not diagnostic of myocardial infarction' has been given a number that sits on a graded risk scale, and the higher it sat, the more that patient's subsequent cardiovascular risk differs from someone whose value was undetectable.
In practice the failure mode is a letter that says myocardial infarction was excluded and stops there. The receiving clinician reads exclusion, the patient hears all clear, and the risk-factor review that should follow does not happen.
Write the actual value into the discharge summary rather than the conclusion alone, and pair it with an instruction: lipids, blood pressure, glycaemia, smoking. That is the part of the pathway with outcome evidence behind it.
- Record the peak troponin value in the discharge summary, not only the interpretation
- Phrase the conclusion as 'no myocardial infarction' rather than 'cardiac cause excluded' — they are different claims
- Book the risk-factor review before discharge; it is far less likely to happen once the patient is home
- Tell the patient in plain terms that a ruled-out heart attack is not a clean bill of cardiovascular health
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