Correct Answer: C

Rationale: The correct answer is C: 'Avoid lifting more than 10 lb.' After a cataract extraction, the nurse should instruct the client to avoid lifting heavy objects to prevent increased intraocular pressure, which could lead to complications. Choices A, B, and D are incorrect. A - 'Bend at the waist when picking up objects' can increase intraocular pressure; B - 'Avoid lying on the operative side' is not a specific concern related to cataract extraction; D - 'Apply ice to the affected eye' is not a standard post-cataract extraction instruction.

Correct Answer: C

Rationale: The correct answer is C because avoiding alcohol before bedtime can help promote better sleep. Choice A is incorrect as vigorous exercise close to bedtime can actually hinder sleep. Choice B is also incorrect as consuming beverages with caffeine or sugar close to bedtime can disrupt sleep. Choice D, while a good practice, does not directly address the issue of avoiding alcohol before bedtime to improve sleep quality.

Correct Answer: B

Rationale: The correct answer is to administer nitroglycerin. Nitroglycerin is the priority intervention for a patient presenting with chest pain as it helps dilate blood vessels, reduce chest pain, and improve oxygen supply to the heart. Obtaining a detailed medical history, conducting an ECG, or administering morphine sulfate are important steps in the assessment and treatment process but are secondary to the immediate need to address chest pain and potential cardiac ischemia.

Correct Answer: A

Rationale: The correct answer is A: Pregnancy status. Raloxifene is a pregnancy category X drug, which means it can cause serious birth defects. Therefore, it is crucial for the nurse to assess the client's pregnancy status before initiating therapy. Choice B, bone density, while important in osteoporosis management, is not a specific concern related to initiating raloxifene therapy. Choice C, calcium levels, and choice D, blood pressure, are not directly related to the initiation of raloxifene therapy in a female client with osteoporosis.

Correct Answer: D

Rationale: The correct answer is D, Varicella. Varicella (chickenpox) is a disease that requires airborne precautions to prevent its spread. Airborne precautions are necessary to prevent transmission of pathogens that remain infectious over long distances when suspended in the air. Rubella, pertussis, and influenza do not require airborne precautions. Rubella and pertussis require droplet precautions, while influenza requires droplet and contact precautions. Therefore, Varicella is the only disease in the list that necessitates airborne precautions.