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: 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: A

Rationale: The correct answer is A. Taking the pulse before taking digoxin is crucial as it helps monitor the heart rate, as digoxin can cause bradycardia as a side effect. Option B is incorrect because digoxin should be taken on an empty stomach to enhance absorption. Option C is incorrect because digoxin should be held and the healthcare provider should be contacted if the heart rate is less than 60/min. Option D is incorrect because digoxin should not be taken with food due to decreased absorption.

Correct Answer: C

Rationale: The correct answer is C: Tachycardia. Tachycardia is a common sign of dehydration because the body tries to compensate for the reduced fluid volume by increasing the heart rate. Bradycardia (choice A) is not typically seen in dehydration as the body tries to maintain perfusion. Increased skin turgor (choice B) is actually a sign of dehydration, but tachycardia is a more specific finding. A bounding pulse (choice D) is associated with conditions like hyperthyroidism or aortic regurgitation, not dehydration.

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.