Correct Answer: D

Rationale: The correct answer is D. A preschooler with intermittent alertness episodes is not a suitable candidate for patient-controlled analgesia (PCA) due to their inability to effectively manage the system. In the context of terminal cancer, it is crucial for the patient to be able to utilize the PCA system appropriately to manage pain effectively. Preschoolers may not have the cognitive ability or understanding to operate a PCA pump compared to the other clients. Choices A, B, and C present clients with conditions that do not inherently impede their ability to use a PCA pump effectively.

Correct Answer: B

Rationale: Two positive responses on the CAGE questionnaire strongly suggest alcohol dependence. Choice A is incorrect as the CAGE questionnaire specifically targets alcohol abuse. Choice C is incorrect because one positive response is not enough to indicate alcohol addiction. Choice D is incorrect because alcohol dependence can be suggested with two positive responses, not all four.

Correct Answer: D

Rationale: The correct answer is to increase the humidity of the oxygen source. This action helps thin thick secretions, making them easier to clear from the tracheostomy tube. Increasing fluid intake (Choice A) can be beneficial in some cases but addressing humidity is more specific to managing thick secretions in a client with a tracheostomy. Tracheal suctioning (Choice B) should be done after attempting to thin the secretions with increased humidity. Administering a mucolytic agent (Choice C) is a possible intervention but typically comes after addressing humidity and before resorting to suctioning to avoid unnecessary invasiveness.

Correct Answer: A

Rationale: Proper care of the residual limb is essential in preventing complications like infection or poor healing. By choosing 'All of the above,' the nurse ensures that the client receives comprehensive care. Inspecting the skin for redness is crucial as it can help in early detection of infections. Using a residual limb shrinker helps reduce swelling and maintain proper shaping of the limb. Washing the stump with soap and water on a daily basis is important for hygiene and preventing infections. Therefore, all the recommendations (choices A, B, and C) are essential for the client's care, making choice A the correct answer. Choice D is incorrect as it does not encompass all the necessary recommendations for the client's care.

Correct Answer: D

Rationale: The correct answer is D: 'Take the full course of antibiotics, even if symptoms improve.' It is crucial for clients to complete the full course of antibiotics as prescribed to ensure that the infection is fully eradicated and to prevent the development of antibiotic resistance. Choice A is incorrect because antibiotics should not be reserved for severe symptoms only; they should be taken as prescribed. Choice B is incorrect as stopping the medication once symptoms disappear may lead to a relapse of the infection. Choice C is important but not the most crucial teaching point when compared to completing the full course of antibiotics.