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.

Answer and Explanation

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

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Correct Answer is C

Explanation

Choice A rationale
Reducing the overall contractility of the heart muscle is not the primary reason for performing Coronary Artery Bypass Surgery (CABG)4. In fact, reducing the contractility of the heart muscle could potentially decrease the heart’s ability to pump blood effectively.
Choice B rationale
Reducing plaque buildup in the carotid artery is not the primary reason for performing CABG4. While plaque buildup in the carotid artery can lead to serious conditions such as stroke, CABG is specifically performed to bypass blocked coronary arteries, not carotid arteries.
Choice C rationale
Increasing the oxygen supply to the heart muscle is the primary reason for performing CABG4. When coronary arteries become blocked or narrowed due to plaque buildup, the heart muscle may not receive enough oxygen-rich blood. CABG is performed to create a new route, or bypass, around the blocked artery, which improves blood flow and oxygen supply to the heart muscle.
Choice D rationale
Increasing the myocardial workload is not the primary reason for performing CABG4. In fact, increasing the workload of the heart could potentially exacerbate heart disease and lead to complications such as heart failure.

A. Bleeding from the gums. B. An increase in blood pressure. C. A nonsustained episode of ventricular tachycardia. D. Decreased level of consciousness.

Correct Answer is A

Explanation

Choice A rationale
Bleeding from the gums is a sign of excessive bleeding, which can be a side effect of thrombolytic therapy. Thrombolytic agents work by dissolving blood clots, but they can also interfere with the body’s normal clotting mechanism, leading to bleeding. If a patient experiences unusual or excessive bleeding, it may be necessary to stop the infusion of the thrombolytic agent.
Choice B rationale
An increase in blood pressure is not typically a reason to stop the infusion of a thrombolytic agent in a patient with an acute myocardial infarction. While blood pressure should be monitored closely during thrombolytic therapy, an increase in blood pressure is not a common side effect.
Choice C rationale
A nonsustained episode of ventricular tachycardia is not typically a reason to stop the infusion of a thrombolytic agent in a patient with an acute myocardial infarction. While arrhythmias can occur during a myocardial infarction, they are not a common side effect of thrombolytic therapy.
Choice D rationale
A decreased level of consciousness can be a sign of many serious conditions, including bleeding in the brain. However, it is not typically a reason to stop the infusion of a thrombolytic agent unless it is accompanied by other signs of excessive bleeding.

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

What is the primary pathophysiological reason for performing Coronary Artery Bypass Surgery?

Correct Answer is C

Explanation

What patient data would indicate to the nurse that the infusion of a thrombolytic agent should be stopped in a patient with an acute myocardial infarction?

Correct Answer is A

Explanation

In the context of a patient who has undergone coronary artery bypass grafting using a right radial artery graft, which observation is most crucial for the nurse to report to the healthcare provider?

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