Correct Answer: C

Rationale: The correct action to reduce the risk of aspiration during enteral feedings is to elevate the head of the bed to 45 degrees. This position helps prevent the reflux of feeding into the lungs. Administering the feeding over 60 minutes (Choice A) does not directly reduce the risk of aspiration. Positioning the client in a supine position (Choice B) increases the risk of aspiration as it promotes reflux. Flushing the feeding tube with water (Choice D) is important for tube patency but does not directly reduce the risk of aspiration.

Correct Answer: B

Rationale: Telling the client that their delusions are not real is the most appropriate action as it helps ground them in reality without reinforcing the delusion. Encouraging the client to discuss the delusions (choice A) may further validate or intensify the delusions. Avoiding discussing the delusions (choice C) may lead to the client feeling isolated and unheard. Challenging the client's delusions directly (choice D) can escalate the situation and cause distress to the client.

Correct Answer: D

Rationale: The correct answer is D, International normalized ratio (INR). INR is used to monitor the therapeutic effect of warfarin, an anticoagulant medication. Warfarin works by inhibiting the synthesis of vitamin K-dependent clotting factors. Monitoring the INR helps assess how well the medication is working to prevent blood clots. Choices A, B, and C are not specific indicators for monitoring the effectiveness of warfarin. Hemoglobin levels primarily assess the oxygen-carrying capacity of red blood cells, platelet count evaluates the clotting ability of blood, and PT measures the time it takes for blood to clot. While these values are important for overall health assessment, they do not directly reflect the anticoagulant effects of warfarin.

Correct Answer: D

Rationale: The correct answer is D: Aspartate aminotransferase (AST) 60 units/L. An elevated AST level indicates liver damage, which can be a side effect of methotrexate and should be reported. Elevated white blood cell count (choice A), platelet count (choice B), or normal hemoglobin level (choice C) are not directly related to methotrexate therapy for rheumatoid arthritis.

Correct Answer: A

Rationale: The correct answer is A: 'Use three-pronged grounded plugs.' This is important in preventing electrical fires as it provides a grounded connection, reducing the risk of electrical malfunctions. Choice B is incorrect because covering extension cords with a rug can lead to overheating and increase the risk of fire. Choice C is also incorrect as tingling sensations around a cord indicate an electrical hazard, not proper functioning. Choice D is incorrect as pulling the cord to remove a plug can damage the cord, leading to potential electrical dangers.