A patient who has been experiencing chest pain for several hours is admitted with a diagnosis of rule out acute myocardial infarction (AMI). Which laboratory test is most specific for the nurse to monitor in determining whether the patient has had an AMI?
Homocysteine.
C-reactive protein.
Myoglobin.
Cardiac-specific troponin.
The Correct Answer is D
Choice A rationale
Homocysteine is an amino acid that your body uses to make protein and to build and maintain tissue. But too much homocysteine in your blood might increase your risk of heart disease.
However, it is not the most specific marker for AMI.
Choice B rationale
C-reactive protein (CRP) is produced by the liver and its level rises when there is inflammation in your body. While its level can increase in those with a heart attack, it is not the most specific marker for AMI6.
Choice C rationale
Myoglobin is a small protein that stores oxygen. It is measured occasionally. Myoglobin is sometimes measured in addition to troponin to help diagnose a heart attack. However, it is not as specific as cardiac-specific troponin.
Choice D rationale
Cardiac-specific troponin is a cardio-specific, highly sensitive marker for myocardial damage. The absolute cardiospecificity of cTnI allows the diagnosis of myocardial infarction distinct from muscle lesions and non-cardiac surgery.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
No explanation
Correct Answer is A
Explanation
Choice A rationale
Sexual activity uses about as much energy as climbing two flights of stairs. This comparison can help patients understand that if they can perform activities of similar exertion without chest pain or undue fatigue, it may be safe to resume sexual activity. However, patients should always consult with their healthcare provider before resuming sexual activity after an acute myocardial infarction (AMI).
Choice B rationale
While holding and cuddling are good ways to maintain intimacy after a heart attack, this does not directly address the patient’s question about safely resuming sexual intercourse.
Choice C rationale
While it is true that the doctor will provide sexual guidelines when the patient’s heart is strong enough, this response does not provide the patient with immediate guidance or reassurance.
Choice D rationale
While most patients are able to enjoy intercourse without any complications, this statement may be too general and does not take into account the individual patient’s health status and recovery progress.
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