Nursing Elites

1. Which laboratory test would be the least effective in diagnosing a myocardial infarction?

• A. AST
• B. Troponin
• C. CK-MB
• D. Myoglobin

Correct answer: A

Rationale: AST, choice A, would be the least effective in diagnosing a myocardial infarction as it is not specific for this condition. Troponin, CK-MB, and myoglobin (choices B, C, and D) are more specific markers for myocardial infarction. Troponin is considered the gold standard due to its cardiac specificity. CK-MB is also specific to the heart, and its isoenzyme levels elevate post-heart damage. Myoglobin, although elevated in myocardial infarction, is not as specific as troponin and CK-MB and can also increase in conditions like burns and muscle trauma. Therefore, AST is the least effective choice for diagnosing a myocardial infarction.

2. How should Lasix be administered to prevent hypotension?

• A. By administering it over 1-2 minutes
• B. By hanging it IV piggyback
• C. With normal saline only
• D. By administering it through a venous access device

Correct answer: A

Rationale: Lasix should be administered over 1-2 minutes at approximately 1mL per minute to prevent hypotension. This slow administration helps to reduce the risk of adverse effects such as sudden drops in blood pressure. Choice B is incorrect because Lasix does not need to be hung IV piggyback, choice C is incorrect as Lasix administration does not require it to be mixed with normal saline only, and choice D is incorrect as Lasix does not have to be specifically administered through a venous access device (VAD) to prevent hypotension.

3. A healthcare provider is preparing to assess the acoustic nerve during a neurological examination. To assess this nerve, the provider uses which technique?

• A. Uses a tuning fork
• B. Asks the client to puff out the cheeks
• C. Tests taste perception on the client's tongue
• D. Checks the client's ability to clench the teeth

Correct answer: A

Rationale: Testing of cranial nerve VIII (acoustic nerve) involves assessing hearing acuity through techniques like the whispered voice test and tuning fork tests (Weber and Rinne). Using a tuning fork helps determine if sound lateralizes to one ear (Weber) and compares air conduction to bone conduction (Rinne). Asking the client to puff out the cheeks is for cranial nerve VII (facial nerve) function evaluation. Testing taste perception on the tongue assesses cranial nerve IX (glossopharyngeal nerve) function. Checking the ability to clench teeth assesses cranial nerve V (trigeminal nerve) motor function.

4. The chemotherapeutic DNA alkylating agents such as nitrogen mustards are effective because they:

• A. cross-link DNA strands with covalent bonds between alkyl groups on the drug and guanine bases on DNA.
• B. have few, if any, side effects.
• C. are used to treat multiple types of cancer.
• D. are cell-cycle-specific agents.

Correct answer: A

Rationale: Alkylating agents, such as nitrogen mustards, are effective chemotherapeutic agents because they cross-link DNA strands with covalent bonds between alkyl groups on the drug and guanine bases on DNA. This cross-linking interferes with DNA replication and transcription, leading to cell death. Choice B is incorrect because alkylating agents have numerous side effects, including alopecia, nausea, vomiting, and myelosuppression. Choice C is incorrect because while nitrogen mustards are used to treat multiple types of cancer like chronic lymphocytic leukemia, non-Hodgkin's lymphoma, and breast and ovarian cancer, their effectiveness is primarily due to DNA cross-linkage. Choice D is incorrect because alkylating agents are non-cell-cycle-specific agents, meaning they can act on cells in any phase of the cell cycle, not just on cells that are actively dividing.

5. The nurse is caring for a dying client who has persistently requested that the nurse 'help her to die and be in peace.' According to the Code of Ethics for Nurses, the nurse should:

• A. Ask the client if she has signed an advance directives document.
• B. Tell the client that another nurse will be assigned to care for her.
• C. Instruct the client that only a physician can legally assist in suicide.
• D. Try to make the client as comfortable as possible, but refuse to assist in death.

Correct answer: D

Rationale: According to the Code of Ethics for Nurses, the nurse should try to make the client as comfortable as possible but refuse to assist in death. It is not within the scope of nursing practice to assist in death, even if requested by the client. Choice A is incorrect as advance directives do not directly relate to the client's request for assistance in dying. Choice B is inappropriate as passing the responsibility to another nurse does not address the ethical dilemma at hand. Choice C is incorrect because instructing the client that only a physician can legally assist in suicide does not address the ethical considerations involved in the request. Therefore, the most appropriate action for the nurse is to provide comfort measures while upholding ethical standards and not participating in ending the client's life.

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