Myocardial Infarction (MI)

Question 1

Which symptom is most associated with a myocardial infarction?

Answer 1

Crushing chest pain that may radiate to/across the left arm

Question 2

How do myocardial cells respire?

Answer 2

Aerobically

Question 3

What is infarction?

Answer 3

Tissue death caused by ischaemia

Question 4

What is myocardial infarction (MI)?

Answer 4

A sudden irreversible injury (‘heart attack’) where localised cell death causes a defined region of necrosis, inflammation + scarring

Question 5

What is myocardial infarction (MI) caused by?

Answer 5

• Rupture of atherosclerotic plaque in a coronary artery
• This causes a thrombus (blood clot) to form, plugs the artery, blood supply to the region of the heart it supplies is stopped

Question 6

What is the most common symptom of myocardial infarction (MI)?

Answer 6

Chest pain/discomfort - can travel into the shoulder, arm, back, neck, or jaw