Correct Answer: D

Rationale: The correct answer is D because feedback is an essential component of the communication process. Feedback allows the receiver to respond to the sender, indicating understanding or seeking clarification. This two-way interaction is crucial for effective communication. In contrast, choice A is incorrect as communication components are interdependent, not mutually exclusive. Choice B is also incorrect as communication is often non-linear and involves feedback loops. Choice C is incorrect because communication involves various elements beyond just the sender and the receiver, such as context, message, and noise.

Correct Answer: B

Rationale: The correct answer is B: Review the overall situation to identify the core issues. This is the initial step when addressing an ethically challenging situation because it allows you to gain a comprehensive understanding of the situation before delving into specific details. By reviewing the overall situation, you can identify the key ethical issues at play and prioritize which aspects need to be addressed first. This step sets the foundation for developing an effective strategy to navigate the ethical dilemma. Incorrect answers: A: Identifying all those involved is important, but it should come after reviewing the situation. C: Gathering facts is necessary, but reviewing the overall situation should precede this step. D: Determining the ethical dilemma is crucial, but it is more effective to first review the entire situation to fully grasp the complexities before pinpointing the ethical issue.

Correct Answer: A

Rationale: The correct answer is A: conceptual model of caring. In this scenario, the nurse wants to apply nursing theory to practice in a unit dealing with domestic violence. Watson's Theory of Caring emphasizes the importance of the nurse-patient relationship, which is central when addressing sensitive issues like domestic violence. By considering the interrelatedness of the constructs of this theory, the nurse can develop a conceptual model that guides her practice in providing caring and compassionate care to domestic violence survivors. This model will help her incorporate key elements of caring, such as empathy and respect, into her nursing interventions. Summary: B: Hypothesis of the impact of caring on domestic violence - This choice is incorrect as it focuses on the impact of caring on domestic violence, rather than the application of a nursing theory to practice. C: Proposition of how caring is conceptualized - This choice is incorrect as it only addresses the conceptualization of caring, not the practical application of a nursing theory to practice. D: Theory of scientific

Correct Answer: C

Rationale: The correct answer is C: Rauwolfia serpentina. Reserpine is derived from the Rauwolfia serpentina plant. This plant contains alkaloids that act as a central nervous system depressant, reducing anxiety and lowering blood pressure. Atropa belladonna (A) contains toxic alkaloids, Digitalis purpurea (B) contains cardiac glycosides used for heart conditions, and Cephaelis ipecacuanha (D) contains emetine used for inducing vomiting, none of which are related to reserpine's effects.

Correct Answer: B

Rationale: The correct answer is B because keeping the RN informed of any abnormal blood pressure readings is an essential part of the UAP's responsibility. This ensures that the RN is aware of any potential issues with the patients' health and can intervene if necessary. It is important for the UAP to communicate such vital information promptly to the RN, who has the clinical expertise to assess the situation and make appropriate decisions. Choice A is incorrect because the UAP should not delegate tasks to another UAP without prior authorization from the RN. Choice C is incorrect because calling the physician directly is beyond the scope of practice for a UAP. Choice D is incorrect because initiating a low-sodium diet for hypertensive patients is a clinical decision that should be made by the RN or physician, not the UAP.