Correct Answer: B

Rationale: In clients with COPD experiencing difficulty breathing, increasing the client's oxygen flow rate is the priority intervention. This action helps to improve oxygenation and relieve shortness of breath. While bronchodilators and other medications may be necessary, providing immediate oxygen support is crucial. Elevating the head of the bed and repositioning the client can assist with breathing comfort but do not address the immediate need for improved oxygenation in COPD exacerbation.

Correct Answer: B

Rationale: A decrease in white blood cell count indicates that the infection is responding to treatment and the client's condition is improving. Monitoring the white blood cell count is a more objective indicator of the body's response to the antibiotics. Choices A, C, and D may also be positive signs, but they are less specific and may vary among individuals. Respiratory rate alone may not be sufficient to indicate improvement, as other factors can influence it. Energy levels and cough characteristics are subjective and may not always correlate with the effectiveness of antibiotic treatment.

Correct Answer: D

Rationale: The client is likely experiencing spinal fluid leakage (post-lumbar puncture headache), a common complication of a lumbar puncture. This leakage results in a reduction of cerebrospinal fluid volume around the brain and spinal cord, leading to a headache that worsens when in an upright position due to reduced buoyancy. A migraine headache (Choice A) is not typically associated with a lumbar puncture. Infection from the puncture site (Choice B) would present with localized signs of inflammation, such as redness, swelling, and warmth, rather than worsening headache. Low blood sugar (Choice C) is not a common complication of lumbar puncture and would not typically manifest as a worsening headache when sitting up.

Correct Answer: B

Rationale: The correct answer is B. Alendronate (Fosamax) should be taken with a full glass of water in the morning to prevent esophageal irritation and ensure proper absorption. Choice A is incorrect because taking alendronate at bedtime increases the risk of esophageal irritation due to lying down. Choice C is incorrect because patients should remain upright for at least 30 minutes after taking alendronate to prevent esophageal irritation. Choice D is incorrect because alendronate should be taken on an empty stomach, not with food, to enhance absorption.

Correct Answer: A

Rationale: The correct instruction for the nurse to provide after cataract extraction is to advise the client to avoid straining, bending, or lifting heavy objects. These activities can increase intraocular pressure, which should be minimized post-surgery to promote healing and prevent complications. Choices B, C, and D are incorrect because limiting sunlight exposure, irrigating the conjunctiva with saline, and reading without direct lighting are not primary instructions following cataract extraction.