Correct Answer: A

Rationale: The correct answer is A: a diet of 2500 to 3500 kcal per day. During hemodialysis, the patient loses nutrients and energy, so a high-calorie diet is necessary to maintain proper nutrition and energy levels. 2500-3500 kcal/day is a suitable range for a 100-kg patient. Choice B is incorrect because protein intake should be adequate to prevent malnutrition in hemodialysis patients, typically 1.2g/kg body weight/day. Choice C is incorrect as potassium intake should be restricted in hemodialysis patients due to impaired kidney function. Choice D is incorrect because fluid intake should be individualized based on the patient's fluid status and should not be limited to less than 500 mL per day.

Correct Answer: A

Rationale: The correct answer is A: Basilar skull fracture. Endotracheal intubation is recommended over nasotracheal intubation to avoid the risk of further damaging a basilar skull fracture. Nasotracheal intubation can potentially cause further injury due to the passage of the tube through the nasal cavity, which could exacerbate a basilar skull fracture. Summary of other choices: B: Cervical hyperextension - Not directly related to the choice between endotracheal and nasotracheal intubation. C: Impaired ability to "mouth" words - Not a significant factor in determining the choice of intubation method. D: Sinusitis and infection - While nasotracheal intubation can potentially lead to sinusitis and infection, the primary concern in this scenario is the risk of aggravating a basilar skull fracture.

Correct Answer: A

Rationale: The correct answer is A because interrupting sedation daily to assess readiness to extubate is a key component of IHI's ventilator bundle to prevent ventilator-associated pneumonia. This practice helps prevent over-sedation, reduce the duration of mechanical ventilation, and decrease the risk of complications. The other choices, B, C, and D, are incorrect as they are not specific components of the IHI's ventilator bundle. Maintaining head of bed elevation, providing deep vein thrombosis prophylaxis, and prophylaxis for peptic ulcer disease are important aspects of critical care but are not directly related to the ventilator bundle protocol outlined by IHI.

Correct Answer: B

Rationale: The correct answer is B: Take them to a private area for initial explanations. This response is the best because it allows the nurse to address the family's concerns in a private and controlled environment. It promotes effective communication and enables the family to express their emotions and receive information without distractions. Choice A is incorrect because asking the family to leave may escalate the situation and not address their needs. Choice C is inappropriate as paging security to remove the family can worsen the family's distress and hinder communication. Choice D is not ideal as leaving the family alone may lead to misunderstandings and increased anxiety. Overall, choice B is the most therapeutic and effective approach in this situation.

Correct Answer: B

Rationale: The correct answer is B: a normal serum creatinine level. In renal insufficiency, the kidneys are not able to filter waste products effectively, leading to an increase in serum creatinine levels. This is a common indicator of renal dysfunction. A: An increased GFR would not be expected in renal insufficiency, as it signifies improved kidney function. C: Increased ability to excrete drugs is not a typical finding in renal insufficiency, as impaired kidney function can lead to drug accumulation. D: Hypokalemia is not directly related to renal insufficiency. It is more commonly associated with factors like diuretic use or gastrointestinal losses.