QuestionSBA
QuestionChoice
BNP is not specific to myocardial ischaemia and is more commonly used to diagnose heart failure.
10028409
d
Elevated BNP
QuestionChoice
Troponins remain elevated for days following a myocardial infarction and so are less useful to assess re-infarct.
10028407
b
Elevated Troponin I
QuestionChoice
This is correct. As CK-MB levels normalise 48 to 72 hours after myocardial ischemia (vs. troponins, which can persist for days), it is the best marker to assess whether re-infarct has occurred.
10028406
a
Elevated creatine kinase MB (CK-MB)
QuestionChoice
Myoglobin levels rise within the first few hours following a myocardial infarction, making them useful early indicators of ischaemia. They are less specific to re-assess for re-infarct.
10028410
e
Elevated myoglobin
QuestionChoice
Troponins remain elevated for days following a myocardial infarction and so are less useful to assess re-infarct.
10028408
c
Elevated Troponin T
Concept
Chapter
2693
3713
Myocardial infarction and Acute Coronary Syndrome (ACS)
Topic
134
Cardiology
18079
Elevated creatine kinase MB (CK-MB) levels suggest a recurrent myocardial infarction and typically return to normal within 48 to 72 hours after ischemia.
A 72 year old man presents with crushing central chest pain at rest, four days following a lateral myocardial infarction.

Which of the following findings is most suggestive of a repeat infarction?
a