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
Explanation
Choice A rationale
The diaphragm is not typically the location of a coarctation of the aorta. The diaphragm is a muscle that helps with breathing and separates the chest cavity from the abdominal cavity.
Choice B rationale
The bifurcation into the common iliac arteries is not typically the location of a coarctation of the aorta. The common iliac arteries are located in the lower part of the aorta and supply blood to the pelvis and legs.
Choice C rationale
The aortic valve is not typically the location of a coarctation of the aorta. The aortic valve is located between the left ventricle of the heart and the aorta.
Choice D rationale
The ductus arteriosus is the correct answer. Coarctation of the aorta often occurs near the ductus arteriosus, a blood vessel that connects the left pulmonary artery to the aorta.
Correct Answer is D
No explanation
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