The nurse would explain to a client that the isoenzyme most useful in the diagnosis of myocardial infarction is
A) CK-MB.
B) CK-MM
C) myoglobin.
D) troponin

Question

Quizplus · Accepted Answer

The enzymes most often used to detect MI are myoglobin, creatine kinase, and troponin. Myoglobin is released rapidly, but its short half-life makes it less useful in clients who present several hours after an infarction. CK-MB is specific for cardiac muscle. Troponin is as sensitive as CK-MB but is more specific and is more useful in excluding myocardial infarction when CK-MB is falsely elevated. CK-MM is a measure of skeletal muscle enzymes.

The Nurse Would Explain to a Client That the Isoenzyme