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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Correct Answer is D

Explanation

Choice A Reason: This is incorrect. Opioids are not indicated for a client who is emerging from a coma, as they can cause respiratory depression, sedation, and confusion. They may also mask the signs of increased intracranial pressure or neurological deterioration.

Choice B Reason: This is incorrect. Darkening the room may not be helpful for a client who is emerging from a coma, as it may increase their disorientation and agitation. The nurse should provide adequate lighting and orient the client to time, place, and person frequently.

Choice C Reason: This is incorrect. Applying restraints may worsen the restlessness and agitation of a client who is emerging from a coma, as they may perceive them as a threat or a restriction. Restraints may also increase the risk of injury, infection, or skin breakdown. The nurse should use restraints only as a last resort and with a physician's order.

Choice D Reason: This is correct. Reducing stimuli is an appropriate intervention for a client who is emerging from a coma, as it can help calm them and prevent sensory overload. The nurse should limit noise, visitors, and unnecessary procedures, and provide a quiet and comfortable environment.

A. Initiate droplet precautions. B. Administer an antitoxin. C. Initiate airborne precautions. D. Destroy the linens after use.

Correct Answer is C

Explanation

Choice A Reason: This is incorrect because droplet precautions are not sufficient to prevent the transmission of pneumonic plague. Droplet precautions are used to prevent the spread of infectious agents that are expelled through coughing, sneezing, or talking and travel only a short distance in the air. Droplet precautions include wearing a surgical mask, gown, and gloves, and placing the client in a private room or with a roommate who has the same infection.

Choice B Reason: This is incorrect because administering an antitoxin is not an intervention for pneumonic plague. An antitoxin is a substance that neutralizes the eﬀects of a toxin produced by a microorganism. Pneumonic plague is not caused by a toxin, but by a bacterial infection.

Choice C Reason: This is correct because initiating airborne precautions is an intervention for pneumonic plague. Airborne precautions are used to prevent the spread of infectious agents that can remain suspended in the air and travel over long distances. Pneumonic plague is a severe and potentially fatal infection caused by the bacterium Yersinia pestis, which can be transmited through respiratory droplets or aerosols. Airborne precautions are used to prevent the spread of infectious agents that can remain suspended in the air and travel over long distances. Airborne precautions include wearing a respirator or N95 mask, placing the client in a negative-pressure room with an air filtration system, and limiting visitors and staﬀ contact.

Choice D Reason: This is incorrect because destroying the linens after use is not an intervention for pneumonic plague. Linens that are contaminated with body ﬂuids or secretions should be handled with gloves and placed in leak-proof bags for laundering or disposal, but they do not need to be destroyed.

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Naxlex Comprehensive Predictor Exams

A nurse is planning care for a client who had a traumatic brain injury and is emerging restlessly from a coma. Which of the following interventions should the nurse include in the plan?

Correct Answer is D

Explanation

A nurse is participating in a biological disaster simulation where citizens are exposed to pneumonic plague. Which of the following interventions should the nurse plan to use while caring for these clients?

Correct Answer is C

Explanation

A nurse is caring for a client who has hypertension and develops epistaxis. Which of the following actions should the nurse take? (Select all that apply.)

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A nurse in the emergency department is monitoring a client who has a cervical spinal cord injury from a fall. The nurse should monitor the client for which of the following complications? (Select all that apply.)

A nurse is caring for a client who is in the compensatory stage of shock. Which of the following findings should the nurse expect?

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