Correct Answer: B

Rationale: Abdominal distention with a firm, rigid abdomen is a concerning sign that may indicate perforation, which requires immediate intervention. The rigidity suggests a complication of the large bowel obstruction. Absence of bowel sounds in all four quadrants, option A, is a common finding in a bowel obstruction but not as alarming as a rigid abdomen. Frequent, small, liquid stools, option C, are not typical findings in a large bowel obstruction; instead, constipation is more common. Nausea and vomiting that worsens after meals, option D, are also common symptoms of a bowel obstruction but do not indicate an immediate life-threatening complication like a perforation.

Correct Answer: B

Rationale: The correct answer is B: The importance of taking medication as prescribed. In the treatment of tuberculosis, adherence to the prescribed medication regimen is crucial to effectively manage the infection and prevent the development of drug resistance. Choices A, C, and D are incorrect because bronchodilators, salt intake, and sunlight exposure are not directly related to the treatment of tuberculosis with isoniazid and rifampin.

Correct Answer: D

Rationale: The correct answer is D. Clients taking warfarin should avoid alcohol and over-the-counter medications without consulting their healthcare provider, as these can interact with warfarin and increase the risk of bleeding. Aspirin, in particular, can exacerbate this risk. Choice A is incorrect because taking warfarin with aspirin can increase the risk of bleeding. Choice B is incorrect as while green leafy vegetables contain vitamin K which can interact with warfarin, it is more important to maintain a consistent intake rather than increase it. Choice C is incorrect because foods high in potassium do not directly impact the bleeding risk associated with warfarin.

Correct Answer: D

Rationale: The correct answer is to monitor the client's potassium level. When administering insulin and glucose in hyperkalemia, the aim is to shift potassium from the bloodstream into the cells, lowering elevated levels. Therefore, monitoring potassium levels closely is essential to prevent hypokalemia or further complications. Monitoring blood glucose levels (Choice A) is important but not the priority in this scenario. Monitoring sodium (Choice B) and calcium levels (Choice C) is not directly related to the treatment of hyperkalemia with insulin and glucose.

Correct Answer: D

Rationale: Sluggish and unequal pupillary responses are indicative of increased intracranial pressure (ICP) in a child with bacterial meningitis and hydrocephalus. This finding suggests that the optic nerve is being compressed due to increased ICP, causing a delay in pupillary reactions. Such a delay is a critical sign of worsening ICP and necessitates immediate intervention. Low blood pressure and increased respiratory rate can occur in various conditions but are less specific to increased ICP than sluggish and unequal pupillary responses, which directly reflect neurological compromise.