Angina is pain caused by regional myocardial ischaemia (1). Ischaemia develops when there is inadequate coronary artery blood supply (oxygen demand exceeds supply) (1).
Ischaemia develops when oxygen demand exceeds supply.
The commonest cause of myocardial ischaemia is reduced oxygen supply due to atherosclerotic coronary artery stenosis.
Other causes of reduced oxygen supply include:
Causes of increased oxygen demand include:
Reference:
1. NICE CKS, November 2020. Angina.
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