2.1
Coronary heart disease (CHD) is the most common cause of death in the UK. It is a progressive disease. The first presenting symptom is often stable angina (pain in the chest on exertion), which may progress to an acute coronary syndrome (ACS). ACSs encompass a range of symptoms with broadly similar underlying causes. They include ischaemic cardiac chest pain of recent origin in the categories:
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non-ST-segment-elevation ACS, including unstable angina and non-ST-segment-elevation myocardial infarction (NSTEMI)
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myocardial infarction (MI) with ST-segment-elevation (an acute MI, also known as STEMI).