QuestionSBA
QuestionChoice
Troponin is raised in both STEMI and NSTEMI as there is myocardial necrosis (death of the tissue) in both. Death of the myocardium causes the release of troponin into the blood.
10024416
b
Troponin is raised in STEMI and normal in NSTEMI
QuestionChoice
In a STEMI, there is total occlusion of a coronary artery. This causes full-thickness (transmural) infarction in the muscular territory of the affected coronary artery. In NSTEMI, there is partial occlusion of a coronary artery which only affects the areas furthest away from the coronary artery (i.e. the innermost part of the myocardium, known as the subendocardium).
10024415
a
STEMI refers to a transmural infarction whereas NSTEMI refers to a subendocardial infarction
QuestionChoice
Cardiac enzymes are raised in both STEMI and NSTEMI as myocardial necrosis causes the release of these enzymes into the blood. The degree of necrosis varies in NSTEMI and STEMI, but there is still a rise in cardiac enzymes in both.
10024417
c
Cardiac enzymes are elevated in STEMI but normal in NSTEMI
QuestionChoice
Pain at rest occurs in NSTEMI, STEMI and **unstable angina**. Stable angina is characterised by exertional pain which is relieved by rest and glyceryl trinitrate (GTN).
10024418
d
Pain at rest occurs in NSTEMI, STEMI and stable angina
QuestionChoice
ST depression may occur in NSTEMI, unstable and stable angina (on exertion). It can also be seen in leads V1 - V3 in posterior STEMI. ST segment changes can be a sign of myocardial ischaemia.
10024419
e
ST segment depression only occurs in NSTEMI
Concept
Chapter
2693
4542
Myocardial infarction and Acute Coronary Syndrome
Topic
134
Cardiology
17281
A 69-year-old gentleman presents to A&E with central crushing chest pain which radiates to his jaw. The man appears to be breathless and sweating profusely. Blood tests reveal a troponin of 150 ng/litre (normal <14 ng/L) and ECG shows ST elevation in leads V1-V4.


Which of the following statements is correct?
a