A patient with chest pain is prescribed to have a troponin level drawn
What purpose does this diagnostic test serve in the care of a patient with chest pain? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply. 1. It appears in the bloodstream 4 to 12 hours after the onset of cardiac injury.
2. The peak level of troponin appears in 12 hours.
3. If a cardiac injury has occurred, the troponin level will stay elevated for 7 to 10 days.
4. The troponin level may be a predictor of myocardial infarction size.
5. A negative result does not need to be retested.
1,2,3,4
Rationale 1: This marker appears in the bloodstream 4 to 12 hours after the onset of injury.
Rationale 2: This marker peaks in 12 hours.
Rationale 3: This marker remains elevated for 7 to 10 days after cardiac injury.
Rationale 4: After an acute myocardial infarction, it may be a predictor of size.
Rationale 5: It is recommended that a negative troponin level within 6 hours after the onset of symptoms be retested at 8 to 12 hours after the onset.
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