the tendency of a drug to combine with its receptor is called
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Nursing Elites

NCLEX-PN

Nclex Questions Management of Care

1. What is the term for the tendency of a drug to combine with its receptor?

Correct answer: D

Rationale: The correct answer is 'affinity.' Affinity refers to the close relationship or mutual attraction between a drug and its receptor, indicating the strength of the drug-receptor bonding. Potency (Choice A) is related to the dose of a drug needed to produce a specific effect. Efficacy (Choice B) refers to a drug's ability to generate the desired effect. Kinetics (Choice C) deals with forces affecting the motion of material bodies or changes in a system, which is not directly associated with the bonding between a drug and its receptor.

2. After administering medication through an NG tube, the client asks if he can lie down when the nurse leaves the room. What is the most appropriate response?

Correct answer: C

Rationale: The correct answer is to inform the client that they can lie down in about 30 minutes. After administering medication through an NG tube, it is recommended that the client remains upright for about 30 minutes to ensure proper absorption of the medications. Option A is incorrect as waiting for 1 hour is unnecessary. Option B is incorrect as the specified timeframe and condition given are not standard practice for lying down after NG tube medication administration. Option D is incorrect as it lacks guidance on the appropriate waiting time and does not emphasize the importance of waiting before lying down for optimal medication absorption.

3. What is a significant point about Shigella that the nurse should acknowledge upon identifying it in a stool culture?

Correct answer: C

Rationale: Shigella is a bacteria sometimes found in stagnant water. Transmission of Shigella is typically oral-fecal, so good hand washing and the use of gloves are the best means of prevention when caring for a client with Shigella. The bacteria can be found in food and water contaminated by fecal material. Incidences of Shigella are reportable in many states. Choices A, B, and D are incorrect. While it is important for close contacts to be aware and practice good hygiene, testing is not routinely indicated. Shigella is not an airborne infection; it is transmitted through contaminated food or water. A one-way breathing apparatus is not necessary for caring for a patient with Shigella; standard precautions, including handwashing and gloves, are sufficient.

4. A health care provider informs a nurse that the husband of an unconscious client with terminal cancer will not grant permission for a do-not-resuscitate (DNR) order. The health care provider tells the nurse to perform a 'slow code' and let the client 'rest in peace' if she stops breathing. How should the nurse respond?

Correct answer: D

Rationale: The nurse may not violate a family's request regarding the client's treatment plan. A 'slow code' is not acceptable, and the nurse should state this to the health care provider. The definition of a 'slow code' varies among health care facilities and personnel and could be interpreted as not performing resuscitative procedures as quickly as a competent person would. Resuscitative procedures that are performed more slowly than recommended by the American Heart Association are below the standard of care and could therefore serve as the basis for a lawsuit. The other options are inappropriate: Option A is speculative and does not address the issue directly; Option B does not challenge the unethical practice of a 'slow code'; Option C is irrelevant and does not address the ethical concerns raised by the health care provider's request.

5. What intervention should the nurse take for a client who has sustained a hyphema?

Correct answer: B

Rationale: The correct intervention for a client who has sustained a hyphema is to keep them at bed rest, usually with the head of the bed raised. This positioning helps to reduce intraocular pressure and prevent further damage or rebleeding. Instructing the client to wear eye protectors in the future (Choice A) is not the immediate intervention required for a hyphema. Applying atropine eyedrops (Choice C) is not typically indicated for a hyphema. Applying an ice pack to the site of injury (Choice D) is not recommended for a hyphema as it can increase the risk of rebleeding. Therefore, the correct answer is to keep the client at bed rest.

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