STEMI (ST-elevation Myocardial Infarction)

Question 1

how does STEMI present

Answer 1

heavy central chest pain (like pressure/ squeezing)

Question 2

what is a STEMI

Answer 2

Acute myocardial infarction is myocardial cell death that occurs because of a prolonged mismatch between perfusion and demand.

In the case of ST-elevation myocardial infarction (STEMI) this is caused predominantly by complete atherothrombotic occlusion of a coronary artery

Question 3

how is STEMI diagnosed

Answer 3

In the appropriate clinical context, a STEMI is diagnosed clinically when there is new (or increased) and persistent ST-segment elevation in at least two contiguous leads of ≥1 mm in all leads other than leads V2-V3 where the following cut-off points apply

Question 4

scaling on ECG

Answer 4

1 mm = 1 small square (at a standard ECG calibration of 10 mm/mV)