A patient is suspected of experiencing an MI at approximately 6:00 AM, at which time laboratory results show an increase in troponin I. The nurse can expect troponin I to peak at what time:
A) 6:00 PM
B) 1:00 PM
C) 8:00 PM the following day
D) 10:00 AM
Ans: A
Feedback: Troponin I is a protein found in cardiac muscle, which peaks approximately 10 to 24 hours after onset of myocardial damage.
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