A patient who has had 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?.

Cardiac-specific troponin.

Myoglobin.

Homocysteine.

C-reactive protein.

Answer and Explanation

The Correct Answer is A

Choice A rationale:

Cardiac-specific troponin is a protein that is released into the bloodstream when there is damage to the heart muscle, such as during an acute myocardial infarction (AMI). It is considered the most specific marker for AMI because it is found only in heart muscle. The normal range for troponin I is between 0 and 0.04 ng/mL2.

Choice B rationale:

Myoglobin is a protein found in heart and skeletal muscles. While it can be elevated in AMI, it is not as specific as troponin because it is also found in skeletal muscles. The normal levels of myoglobin are 25 to 72 ng/mL4.

Choice C rationale:

Homocysteine is an amino acid in the blood, and high levels can increase the risk of heart disease. However, it is not specific for AMI5. The normal range of homocysteine levels are less than 15 micromoles per liter.

Choice D rationale:

C-reactive protein (CRP) is a marker of inflammation in the body and can be elevated in various conditions, including heart disease. However, it is not specific for AMI6. The normal CRP level is less than 0.9 milligrams per deciliter.

So, the correct answer is A, after analyzing all choices.

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Correct Answer is B

Explanation

Choice A rationale:

Checking the pulse rate before taking nitroglycerin is not necessary.

Choice B rationale:

Sitting down before taking nitroglycerin can prevent dizziness and fainting, which are potential side effects of nitroglycerin.

Choice C rationale:

There is no need to remove the nitroglycerin patch before taking sublingual nitroglycerin.

Choice D rationale:

The nitroglycerin patch should not be used to treat acute chest pain.

So, the correct answer is B, after analyzing all choices.

A. "Do you have a history of a heart attack?". B. "Have you had any recent immunizations?". C. "Do you have a family history of endocarditis?". D. "Have you had dental work done recently?".

Correct Answer is D

Explanation

Choice A rationale:

While a history of heart attack indicates a general risk for heart disease, it is not specifically associated with an increased risk for infective endocarditis.

Choice B rationale:

Immunizations do not typically increase the risk for infective endocarditis.

Choice C rationale:

Family history of endocarditis does not necessarily increase the risk for infective endocarditis.

Choice D rationale:

Dental work can introduce bacteria into the bloodstream, which can lead to infective endocarditis, especially in individuals with prosthetic heart valves.

So, the correct answer is D, after analyzing all choices.

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A patient who has had 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

In preparation for discharge, the nurse teaches a patient with chronic stable angina how to use the prescribed short-acting and long-acting nitrates. Which patient statement indicates that the teaching has been effective?.

Correct Answer is B

Explanation

The nurse obtains a health history from an older adult with a prosthetic mitral valve who has symptoms of infective endocarditis (IE). Which question by the nurse helps identify a risk factor for IE?.

Correct Answer is D

Explanation

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A patient who has had 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?.

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