Cardiovascular · UKMLA & AKT
Non-ST-elevation acute coronary syndrome (NSTE-ACS)
A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise non-st-elevation acute coronary syndrome (nste-acs) — the full SA Note notes add investigations, management, complications and 10 practice questions.
Key high-yield points
- NSTE-ACS = unstable angina (no myocyte necrosis) + NSTEMI (necrosis confirmed by troponin rise)
- Mechanism: plaque rupture/erosion → partial/intermittent thrombus → subendocardial ischaemia (cf. STEMI: complete occlusion → transmural necrosis)
- ECG cannot distinguish NSTEMI from unstable angina - troponin is the differentiating test
A normal ECG does not exclude NSTE-ACS. Serial ECGs are essential if the first is normal.
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