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Pathology

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CVS

Question
4 out of 19
 

In an individual with suspected myocardial infarction of 24 hours duration, the serum enzyme estimation of choice is: (AIIMS Nov 2014)



A Lactate dehydrogenase

B Myoglobin

C Creatine phosphokinase-MB

D Oxaloacetate transaminase

Ans. C Creatine phosphokinase-MB

Diagnostic enzyme

Rise (Peak)

Return to baseline

SGOT

8 hrs

3-4 days

LDH (Last)

24 hrs

2 weeks

CK (First)

4-8 hrs

4 days

a. Elevation of the MB isoenzyme of CK is Quite specific for diagnosis of MI.

b. In AMI LDH/LD2 > 1

c. Cardiac specific troponin (cTn) are specific for myocardium

i. Cardiac troponin T (c TnT) and

ii. Cardiac troponin I

d. Myoglobin- first to be elevated and return to normal within 24 hrs. of attack of acute MI.

CVS Flashcard List

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