Correct Answer: A

Rationale: The correct answer is A. Pregnancy or the possibility of pregnancy within 4 weeks is a contraindication for receiving the MMR vaccine. Choice B, client allergy to strawberries, is not a contraindication to the MMR vaccine. Choice C, client history of genital herpes, is not a contraindication for the MMR vaccine. Choice D, the possibility of overseas travel in the next month, is not a contraindication to the MMR vaccine.

Correct Answer: D

Rationale: The correct answer is D: Blood pressure. Before administering metoprolol, a beta-blocker commonly used to treat hypertension, the nurse should assess the client's blood pressure. Metoprolol works by lowering blood pressure and reducing the workload on the heart. Assessing the blood pressure is crucial to ensure it is within the acceptable range to administer the medication safely. Choices A, B, and C (Temperature, Heart rate, Respiratory rate) are important assessments in general patient care but are not specifically required before administering metoprolol for hypertension.

Correct Answer: B

Rationale: The correct answer is B: Hypokalemia. Furosemide is a loop diuretic that can cause potassium depletion, leading to hypokalemia, which is a common adverse effect. Hypokalemia can result in serious complications like cardiac arrhythmias. Choices A, C, and D are not directly associated with the adverse effects of furosemide. Hypertension is a condition that furosemide is often used to treat, increased urine output is an expected effect of furosemide, and hyperglycemia is not a typical adverse effect of this medication.

Correct Answer: D

Rationale: The correct answer is D: Productive cough. Nitroglycerin therapy can lead to adverse effects such as tolerance, orthostatic hypotension, and headache. However, it is not known to cause a productive cough. Tolerance may develop over time, requiring dose adjustments. Orthostatic hypotension can occur due to vasodilation effects, leading to a sudden drop in blood pressure when changing positions. Headache is a common side effect due to vasodilation of cranial blood vessels. Productive cough is not a recognized adverse effect associated with transdermal nitroglycerin therapy.

Correct Answer: B

Rationale: The correct answer is B: Prothrombin time (PT). Warfarin is an anticoagulant medication that works by inhibiting the clotting factors dependent on vitamin K, such as factors II, VII, IX, and X. The prothrombin time (PT) measures the extrinsic pathway and is used to monitor the therapeutic effects of warfarin therapy. Monitoring PT helps assess the time it takes for the blood to clot, ensuring that the anticoagulant effect is within the desired range. Choices A, C, and D are incorrect because hemoglobin (Hgb) measures the amount of hemoglobin in the blood, bleeding time assesses the time it takes for bleeding to stop, and activated partial thromboplastin time (aPTT) is used to monitor heparin therapy, not warfarin therapy.