A patient is in the ER for a suspected myocardial infarction.

The nurse sends a blood sample to the lab.

The patient asked the nurse what laboratory levels would be elevated to indicate an MI. The nurse replies:

Elevated potassium levels.

Elevated CK-MB and Troponin levels.

Elevated Lipid profile.

Elevated WBC count.

Answer and Explanation

The Correct Answer is B

Choice A rationale:
Elevated potassium levels are not a specific indicator of a myocardial infarction (MI). They could be due to other conditions like kidney disease.
Choice B rationale:
Elevated CK-MB and Troponin levels are indeed indicators of an MI. These proteins are released into the blood when heart muscle is damaged.
Choice C rationale:
An elevated lipid profile is a risk factor for heart disease, but it does not indicate an acute MI.
Choice D rationale:
An elevated WBC count could indicate an infection or inflammation, but it is not a specific indicator of an MI.

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Correct Answer is B

Explanation

Choice A rationale:
The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs, not from the left ventricle.
Choice B rationale:
The aorta is the main and largest artery in the human body, originating from the left ventricle of the heart and extending down to the abdomen.
Choice C rationale:
The inferior vena cava carries deoxygenated blood from the lower half of the body back to the right atrium of the heart, not from the left ventricle.
Choice D rationale:
The pulmonary vein carries oxygenated blood from the lungs to the left atrium, not from the left ventricle.

A. Vitamin B12 and Vitamin C need to be taken together. B. Vitamin C helps with potassium absorption. C. Calcium aids the body in iron absorption. D. Vitamin D aids the body in calcium absorption.

Correct Answer is D

Explanation

Choice A rationale:
Vitamin B12 and Vitamin C do not need to be taken together. There’s no known interaction between these two vitamins.
Choice B rationale:
Vitamin C does not help with potassium absorption. It’s known for aiding in the absorption of iron.
Choice C rationale:
Calcium does not aid the body in iron absorption. In fact, calcium can inhibit iron absorption if taken together.
Choice D rationale:
Vitamin D does indeed aid the body in calcium absorption. This is why it’s often recommended to ensure adequate Vitamin D intake for bone health.

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A patient is in the ER for a suspected myocardial infarction. The nurse sends a blood sample to the lab. The patient asked the nurse what laboratory levels would be elevated to indicate an MI. The nurse replies:

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Naxlex Comprehensive Predictor Exams

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Correct Answer is D

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A patient is in the ER for a suspected myocardial infarction.

The nurse sends a blood sample to the lab.

The patient asked the nurse what laboratory levels would be elevated to indicate an MI. The nurse replies: