Correct Answer: A

Rationale: Qi is the life force that circulates through the body in invisible pathways called meridians. In this scenario, the client believes that the blockage of qi is causing severe headaches. While explaining the scientific principles underlying the drug action could be valuable, it's crucial to consider the client's belief system. Therefore, the most appropriate response is to suggest that the prescribed medicine may stimulate the flow of qi, aligning with the client's perspective. Choice B, explaining the vasoconstrictive and serotonin-moderating action of triptan, does not address the client's concerns about qi blockage. Choice C, instructing the client to take as many doses as needed, can lead to potential medication misuse. Choice D, cautioning the client about worsening headaches without medication, may induce fear and hinder effective communication with the client.

Correct Answer: C

Rationale: The correct answer is C because people are living longer and receiving more of their care in the community than in years past. This reflects the current trend where older individuals tend to receive care in community settings rather than institutional ones. Choices A, B, and D are incorrect because they do not align with the reality that more older people today are living longer and being cared for in the community.

Correct Answer: B

Rationale: Nurses may not have the medical expertise to answer all the questions that patients may have regarding their treatment, which is a crucial aspect of obtaining informed consent. While nurses should not influence a patient's decision, it is not a major reason why they should not obtain informed consent. Signatures obtained by nurses are legally binding, and although nurses often act as witnesses, there is no legal restriction preventing them from obtaining informed consent itself.

Correct Answer: B

Rationale: The correct answer is B because private law deals with relationships between individuals and organizations, such as the contract between an individual and the care facility. Choices A, C, and D are not classified under private law. Choice A pertains to professional regulation and is a matter of public law. Choice C involves legal criteria and decision-making related to mental competence, falling under public law. Choice D concerns criminal consequences, which are also part of public law.

Correct Answer: D

Rationale: In this potential case of elder abuse, the nurse's priority should be taking measures to protect the patient's safety. The patient's health and well-being are at risk due to the son's refusal to administer the diuretic, which can lead to serious health complications. While improving family dynamics (choice A), educating the son (choice B), and legal actions (choice C) may be necessary in the long run, the immediate concern is ensuring the patient's safety and well-being.