Correct Answer: A

Rationale: The correct answer is A because determining the patient's wishes regarding end-of-life care is crucial in providing patient-centered care and ensuring that the patient's preferences are respected. By understanding the patient's preferences, healthcare providers can tailor the care plan to align with the patient's values and goals. This helps in promoting autonomy, dignity, and quality of life for the patient. Choices B, C, and D are incorrect because although addressing family issues, discussing grief, and encouraging the patient to express fears are important aspects of caring for a terminally ill patient, they are not the first action that should be completed. Prioritizing the patient's wishes ensures that the care plan is centered around the patient's needs and preferences, which is essential in providing holistic and patient-centered care.

Correct Answer: C

Rationale: Rationale: 1. Acute tubular necrosis (ATN) is the most common intrarenal condition as it directly affects kidney tubules. 2. ATN is characterized by damage to renal tubular cells due to various factors like toxins or ischemia. 3. Prolonged ischemia (choice A) can lead to ATN but is not the most common intrarenal condition. 4. Exposure to nephrotoxic substances (choice B) can cause ATN, but ATN itself is more common. 5. Hypotension for several hours (choice D) can result in ischemia and subsequent ATN, but ATN is still the primary intrarenal condition.

Correct Answer: B

Rationale: The correct answer is B because during terminal weaning, the artificial ventilation is discontinued while maintaining the artificial airway to ensure comfort and support. This allows the patient to breathe on their own with support as needed. Explanation: 1. Option A: Complete extubation following ventilator withdrawal may not be suitable during terminal weaning as it involves removing the breathing tube entirely. 2. Option C: Discontinuation of anxiolytic and pain medications may not always be appropriate during terminal weaning as it depends on the patient's comfort needs. 3. Option D: Titration of ventilator support based on blood gas determinations is not typically done during terminal weaning as the focus is on gradual withdrawal of ventilation support while maintaining comfort.

Correct Answer: A

Rationale: The correct answer is A because in ARDS, there is a severe impairment in gas exchange leading to hypoxemia. Decreasing PaO2 levels despite increased FiO2 administration indicate poor oxygenation, a hallmark of ARDS. Elevated alveolar surfactant levels (Choice B) do not directly correlate with ARDS pathophysiology. Increased lung compliance with increased FiO2 administration (Choice C) is not characteristic of ARDS, as ARDS leads to decreased lung compliance. Respiratory acidosis associated with hyperventilation (Choice D) is not a typical finding in ARDS, as hyperventilation is usually present in an attempt to compensate for hypoxemia.

Correct Answer: B

Rationale: The correct answer is B: Abdominal ultrasonography. This is because ultrasonography is a non-invasive imaging technique that can quickly evaluate for internal injuries such as organ damage or bleeding in patients with blunt abdominal trauma. It is a rapid and effective diagnostic tool to assess the extent of injury and guide further management. Peritoneal lavage (A) is an invasive procedure used in trauma settings to detect intra-abdominal bleeding but is not typically used for teaching purposes. Nasogastric tube placement (C) is used for decompression and drainage in certain conditions but is not relevant for assessing abdominal trauma. Magnetic resonance imaging (MRI) (D) is not typically used as the initial imaging modality for acute trauma due to time constraints and its limited availability in emergency settings.