ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a myocardial infarction occurs, a special ____ is released and can be detcted in a patient’s blood within 26 hours.
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cardiac enzyme
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hormone
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leukocyte
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neurotransmitter
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Explanation:
Detailed explanation-1: -Troponin I is extremely specific for the cardiac muscle and has not been isolated from the skeletal muscle. This absolute specificity makes it an ideal marker of myocardial injury (41).
Detailed explanation-2: -The CK level increases approximately 3 to 4 hours after MI and remains elevated for 3 to 4 days. This makes it useful for detecting re-infarction in the window of 4 to 10 days after the initial insult; troponin remains elevated for 10 days, making it less useful for this purpose.
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