The nurse would explain to a client that increased levels of troponin I are evident within
a. 1 to 2 hours after MI pain has started.
b. 3 to 12 hours after MI pain has started.
c. 7 to 9 hours after MI pain has started.
d. 12 to 15 hours after MI pain has started.
B
Troponin I is similar to CK-MB, and levels increase within 3 to 12 hours after pain has started. This test is very specific to myocardial muscle damage and is not affected by any other disease or injury. Elevations persist for 5-10 days.
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