Correct Answer: A

Rationale: Corrected Rationale: When administering warfarin, it is crucial to verify the patient's INR levels. INR monitoring is essential to ensure that the patient is receiving the correct dose of warfarin for their condition and to minimize the risk of bleeding. Choices B, C, and D are incorrect because administering warfarin with food, monitoring blood glucose levels, and assessing liver function are not directly related to the safe administration and monitoring of warfarin therapy.

Correct Answer: A

Rationale: The correct answer is to assess blood pressure first. Losartan is an angiotensin receptor blocker used to lower blood pressure. Assessing the patient's blood pressure before administering losartan is crucial to ensure it is not already too low, which could lead to hypotension. Assessing heart rate (choice B) is important but not the priority when administering losartan. Serum potassium levels (choice C) and liver function (choice D) are also important assessments, but they are not the primary concern before administering losartan.

Correct Answer: B

Rationale: The correct answer is B. Levetiracetam can cause mood changes and behavioral side effects, so clients should be monitored for these effects. Choice A is incorrect because levetiracetam is not typically associated with weight loss. Choice C is incorrect as levetiracetam is a prescription medication, not available over the counter. Choice D is incorrect as all medications, including levetiracetam, have potential side effects.

Correct Answer: A

Rationale: The correct answer is to check INR levels. Before administering warfarin, it is crucial to check the INR levels to ensure they are within the therapeutic range. This helps to prevent complications such as bleeding or clotting. Choice B, administering it with food, is incorrect as warfarin should typically be taken on an empty stomach. Choice C, monitoring blood glucose, is unrelated to the administration of warfarin. Choice D, assessing liver function, is important but not the immediate action required before administering warfarin.

Correct Answer: A

Rationale: The correct answer is A: Third trimester of pregnancy. Salicylic acid is contraindicated during the third trimester of pregnancy due to the risk of complications for both the mother and the fetus. Thrombocytopenia (choice B) is not a contraindication to salicylic acid therapy. Coronary artery disease (choice C) is not a specific contraindication to salicylic acid therapy. However, caution should be exercised in patients with coronary artery disease due to the antiplatelet effects of salicylic acid. Adolescents with chickenpox (choice D) should not be given salicylic acid due to the risk of Reye Syndrome, a rare but serious illness.