Question

Which cardiac enzyme would the nurse expect to elevate first in a client diagnosed with myocardial infarction?

a. Creatine kinase (CK-MB)
b. Lactate dehydrogenase (LDH)
c. Troponin
d. WBC

Answer 1

The nurse would expect creatine kinase (CK-MB) to elevate first in a client diagnosed with myocardial infarction.

Step-by-step explanation:

The cardiac enzyme that the nurse would expect to elevate first in a client diagnosed with myocardial infarction is creatine kinase (CK-MB).

CK-MB is known as the marker enzyme for the diagnosis of myocardial infarction because it is the first enzyme to increase within a short time in the blood plasma following a heart attack.

Other cardiac enzymes that may also be elevated in myocardial infarction include lactate dehydrogenase (LDH) and troponin.