Correct Answer: D

Rationale: The correct instruction for the nurse to provide to a client taking ciprofloxacin for a urinary tract infection is to avoid caffeine. Ciprofloxacin can interact with caffeine, potentially leading to increased side effects or reduced effectiveness. Choice A is incorrect because antibiotics should be taken for the full prescribed course, even if the client starts feeling better. Choice B is incorrect as ciprofloxacin should not be taken with dairy products or antacids as they can interfere with the absorption of the medication.

Correct Answer: A

Rationale: The correct action for the nurse to include in the plan of care for an older adult at risk for falls is to lock beds and wheelchairs when not in use. This measure is crucial for preventing falls and ensuring patient safety in healthcare settings. Administering sedatives at bedtime (Choice B) is not recommended as it does not address the underlying risk factors for falls and may increase the risk of injury. Providing information about home safety checks (Choice C) is important for fall prevention in the home environment but is not directly related to healthcare settings. Teaching balance and strengthening exercises (Choice D) is beneficial for fall prevention but may not be suitable for all older adults at risk for falls, especially in acute care settings.

Correct Answer: C

Rationale: Preventing aspiration is the priority when caring for a client who is vomiting to reduce the risk of pneumonia or other respiratory complications. Aspiration can occur when vomitus enters the airway, leading to respiratory distress. Ensuring the airway is protected during vomiting episodes is essential. Administering an antiemetic (Choice A) can be considered after addressing the immediate risk of aspiration. Notifying housekeeping (Choice B) and providing an emesis basin (Choice D) are important but are secondary to preventing aspiration, which is crucial for the client's safety and well-being.

Correct Answer: A

Rationale: Central cyanosis is best assessed by examining the oral mucosa, as it is a more reliable indicator compared to other areas like the conjunctivae, soles of the feet, and ear lobes. The oral mucosa reflects the oxygen saturation levels of the blood more accurately. Conjunctivae and ear lobes may show cyanosis, but they are not as reliable as the oral mucosa. The soles of the feet are not typically used to assess central cyanosis.

Correct Answer: D

Rationale: The correct answer is D. Increased urinary output is the desired outcome when administering furosemide to a client with heart failure. Furosemide is a diuretic that promotes the excretion of excess fluids from the body, which helps in reducing fluid overload, a common symptom of heart failure. Choices A, B, and C are not directly related to the action of furosemide in treating heart failure. Visual acuity improvement, decreased respiratory rate, and rapid weight loss are not typical indicators of furosemide effectiveness in managing heart failure.