A nurse is caring for a client who came to the emergency department reporting chest pain. The provider suspects a myocardial infarction. While waiting for the troponin levels report, the client asks what this blood test will show.
Which of the following explanations should the nurse provide to the client?

Troponin is an enzyme that indicates damage to brain, heart, and skeletal muscle tissues.

Troponin is a heart muscle protein that appears in the bloodstream when there is damage to the heart.

Troponin is a protein that helps transport oxygen throughout the body.

Troponin is a lipid whose levels reﬂect the risk for coronary artery disease.

Answer and Explanation

The Correct Answer is B

Choice a) is incorrect because troponin is not an enzyme, but a protein. Enzymes are molecules that speed up chemical reactions in the body. Troponin does not have this function.

Choice b) is correct because troponin is a protein that binds to calcium and regulates the contraction of heart muscle fibers. When the heart muscle is injured, such as in a myocardial infarction, troponin leaks into the bloodstream and can be detected by a blood test. The higher the level of troponin, the more severe the damage to the heart.

Choice c) is incorrect because troponin does not help transport oxygen throughout the body. That function is performed by hemoglobin, which is a protein found in red blood cells.

Choice d) is incorrect because troponin is not a lipid, but a protein. Lipids are fats that are used for energy storage and cell membrane formation. Troponin does not have these roles.

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Free Nursing Study Resources

Correct Answer is ["A","B","D","E"]

Explanation

Choice a) is correct because copies of insurance cards can help clients access medical care and claim compensation in case of a disaster. Insurance cards can also serve as a form of identification if other documents are lost or damaged.

Choice b) is correct because a whistle can help clients signal for help or locate each other in case of an emergency. A whistle can also deter potential atackers or wild animals.

Choice c) is incorrect because antibiotics are not recommended to be included in a disaster readiness supply kit or “go bag”. Antibiotics are prescription drugs that should only be used under the guidance of a health care provider. Using antibiotics without proper indication, dosage, or duration can cause adverse eﬀects, such as allergic reactions, resistance, or superinfection.

Choice d) is correct because household bleach can be used to disinfect water, surfaces, or wounds in case of a disaster. Household bleach can also be used to create chlorine gas, which can be used as a weapon or a deterrent.

Choice e) is correct because pencil and paper can be used to write down important information, such as contact numbers, medical history, or evacuation plans. Pencil and paper can also be used to communicate with others, especially if there is no access to phone or internet services.

A. pH 7.50, HCO3- 20 mEq/L, PaCO2 32 mm Hg B. pH 7.55, HCO3- 30 mEq/L, PaCO2 31 mm Hg C. pH 7.50, HCO3- 26 mEq/L, PaCO2 50 mm Hg D. pH 7.25, HCO3- 19 mEq/L, PaCO2 30 mm Hg

Correct Answer is D

Explanation

Choice A Reason: This is incorrect because these values indicate respiratory alkalosis, which is caused by hyperventilation or excess loss of carbon dioxide (PaCO2). Respiratory alkalosis increases the blood pH and decreases the HCO3- level.

Choice B Reason: This is incorrect because these values indicate metabolic alkalosis, which is caused by excess intake or retention of bases or loss of acids. Metabolic alkalosis increases the blood pH and the HCO3- level.

Choice C Reason: This is incorrect because these values indicate respiratory acidosis, which is caused by hypoventilation or excess retention of carbon dioxide (PaCO2). Respiratory acidosis decreases the blood pH and increases the HCO3- level.

Choice D Reason: This is correct because these values indicate metabolic acidosis, which is a common complication of chronic kidney disease. These values indicate metabolic acidosis, which is a common complication of chronic kidney disease. Metabolic acidosis occurs when the kidneys are unable to excrete excess acids or retain enough bicarbonate (HCO3-), which is a base that buﬀers the blood pH. As a result, the blood pH decreases and becomes more acidic. The normal range for blood pH is 7.35 to 7.45, for HCO3- is 22 to 26 mEq/L, and for PaCO2 is 35 to 45 mm Hg.

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Naxlex Comprehensive Predictor Exams

A community health nurse is providing a community education program about disaster preparedness. Which of the following should the nurse recommend that clients include in their family’s disaster readiness supply kit or “go bag”? (Select all that apply.)

Correct Answer is ["A","B","D","E"]

Explanation

A nurse is reviewing the arterial blood gas values of a client who has chronic kidney disease. Which of the following sets of values should the nurse expect?

Correct Answer is D

Explanation

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