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Dose of aspirin post myocardial infarction

Authoring team

Aspirin reduces the mortality from myocardial infarction.

  • patients with a suspected acute myocardial infarction should be treated with aspirin 300mg stat ahead of hospital admission.
  • patients with a proven acute myocardial infarction should be continued on aspirin 150mg daily for one month.
  • after one month patients should be treated with 75mg aspirin daily. This dose should be continued long-term. Long-term low-dose aspirin reduces overall mortality, non-fatal re-infarction, non-fatal stroke and vascular death.

Reference

  1. NICE. Acute coronary syndromes. NICE guideline NG185. Published November 2020, last reviewed December 2024

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