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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Secondary hypertension is high blood pressure that is caused by another medical condition or medication. It is not the most common type of hypertension.
Choice B rationale
Congenital hypertension is not a recognized type of hypertension. Hypertension can be associated with some congenital conditions, but it is not a type of hypertension itself.
Choice C rationale
Acquired hypertension is not a recognized type of hypertension. While lifestyle factors can contribute to the development of hypertension, the term “acquired hypertension” is not typically used.
Choice D rationale
Primary hypertension, also known as essential hypertension, is the most common type of hypertension. It is high blood pressure that does not have a known secondary cause.
Correct Answer is A
Explanation
Choice A rationale
Tetralogy of Fallot is a congenital heart condition that presents with a combination of four defects in the structure of the heart. The most common symptoms in a newborn with this condition include cyanosis (bluish color of the skin due to reduced oxygen in the blood) and hypoxia (low levels of oxygen in the body)34567.
Choice B rationale
While a high-pitched cry can be a sign of distress in a newborn, it is not specifically associated with tetralogy of Fallot. Dyspnea (difficulty breathing) can occur in severe cases, but it is not one of the primary symptoms of this condition.
Choice C rationale
Leg pain and twitching are not typical symptoms of tetralogy of Fallot. These symptoms could be indicative of other conditions, but they are not associated with this specific congenital heart defect.
Choice D rationale
Epistaxis (nosebleeds) and anemia are not typical symptoms of tetralogy of Fallot. While these conditions can occur in children for various reasons, they are not directly related to this specific congenital heart defect.
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