Acronym

MI

Myocardial infarction

Myocardial injury caused by ischaemia, commonly known as a heart attack.

What it means

Myocardial injury caused by ischaemia, commonly known as a heart attack.

Clinical context

MI is commonly used in Cardiology, Emergency medicine. The exact meaning can depend on specialty, region and local documentation practice.

Learning note

Use the full term when clarity matters, especially in formal assignments, prescriptions, handover and patient-facing communication.