narrow therapeutic index medications
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Nursing Elites

NCLEX-PN

PN Nclex Questions 2024

1. Narrow therapeutic index medications:

Correct answer: have less than a twofold difference in minimum toxic levels and minimum effective concentration in the blood

Rationale: The therapeutic index is the ratio between the median lethal dose and median effective dose of a drug, indicating the safety margin. Narrow therapeutic index medications have a small difference between minimum toxic levels and minimum effective concentration in the blood, making them high-risk drugs that require close monitoring to avoid toxicity. Choice A is incorrect because pharmacokinetics refer to drug absorption, distribution, metabolism, and elimination, not the therapeutic index. Choice B is incorrect because narrow therapeutic index drugs necessitate monitoring due to their narrow margin of safety. Choice D is incorrect because narrow therapeutic index drugs do not necessarily have limited potency but are characterized by a small window between efficacy and toxicity.

2. Which of the following attitudes is essential in a nurse who assists clients during crises?

Correct answer: viewing crisis intervention as the first step in solving bigger problems

Rationale: Viewing crisis intervention as the first step in solving bigger problems is essential in a nurse who assists clients during crises. This approach focuses on addressing the immediate crisis first, which can potentially prevent the escalation of bigger problems. Wanting to help clients solve all problems identified (Choice B) may not be feasible or necessary during a crisis situation where immediate intervention is crucial. Taking an active role in guiding the process (Choice C) is important, but the primary focus should be on crisis intervention. Feeling that work requires identification with all of a client’s problems (Choice D) may lead to a lack of focus on the immediate crisis at hand.

3. After the client discusses her relationship with her father, the nurse says, “Tell me whether I am understanding your relationship with your father. You feel dominated and controlled by him?” This is an example of:

Correct answer: seeking consensual validation.

Rationale: Seeking consensual validation is the correct answer. Consensual validation is a technique used to check one’s understanding of what the client has said. It involves confirming with the client whether the nurse's interpretation aligns with the client's feelings or thoughts. This process helps build rapport, trust, and a shared understanding between the nurse and the client. Verbalizing the implied (choice A) refers to expressing the underlying or implicit meaning of a client's statement. Encouraging evaluation (choice C) involves prompting the client to assess or judge a situation. Suggesting collaboration (choice D) entails proposing working together with the client on a shared goal, which is not the primary focus in the scenario provided.

4. A health care worker is concerned about a new mother being overwhelmed by caring for her infant. What should the health care worker do?

Correct answer: Refer the mother to parenting classes.

Rationale: When a health care worker is concerned about a new mother being overwhelmed by caring for her infant, the best course of action is to refer the mother to parenting classes. Prevention of child abuse is focused on educating parents on how to care for their child and handle the demands of infant care. By attending parenting classes, the mother can build self-confidence, self-esteem, and coping skills. Parenting classes help parents understand the developmental needs of their children and learn effective ways to manage their home environment. Additionally, these classes provide parents with increased social contacts and knowledge about community resources. Contacting child protective services (choice A) should not be the immediate action as there is no indication of abuse. Providing literature about child care (choice B) may not be as effective as hands-on parenting classes. Consulting a therapist (choice C) may be beneficial, but addressing parenting skills through classes is more appropriate in this scenario.

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

Correct answer: cross-link DNA strands with covalent bonds between alkyl groups on the drug and guanine bases on DNA.

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.

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