Correct Answer: C

Rationale: The correct answer is C: Change to assist/control ventilation at a rate of 4 breaths/min. When the patient's spontaneous respirations decrease to match the ventilator rate, it indicates that the patient is not actively participating in breathing. Changing to assist/control ventilation allows the patient to trigger breaths when they desire, ensuring a more synchronized and comfortable breathing pattern. A: Adding PEEP may help improve oxygenation but is not directly related to the issue of decreased spontaneous respirations. B: Adding pressure support provides additional support during inspiration but does not address the underlying issue of decreased spontaneous respirations. D: Increasing the SIMV respiratory rate would not address the patient's decreased spontaneous respirations and could potentially lead to overventilation.

Correct Answer: A

Rationale: The correct answer is A because allowing family members to remain at the bedside can provide emotional support and comfort to the patient, helping them feel safe in the critical care setting. Family presence can also facilitate communication and understanding between the healthcare team and the patient. Choice B is incorrect because consulting with the charge nurse before making patient care decisions may not directly contribute to the patient feeling safe. Choice C is incorrect because providing informal conversation about work-related topics may not address the patient's need for safety and security in the critical care setting. Choice D is incorrect because explaining how to communicate for assistance is important for patient care but may not directly contribute to the patient's sense of safety in the critical care setting.

Correct Answer: D

Rationale: The correct answer is D: No sedation or analgesia. Neuromuscular blocking agents do not provide sedation or pain relief; they solely act on skeletal muscles to induce paralysis for procedures like intubation. Choice A is incorrect because NMB agents do not affect anxiety levels. Choice B is incorrect because NMB agents do not provide analgesia. Choice C is incorrect because NMB agents do not induce sedation. The primary purpose of NMB agents is to induce muscle paralysis without affecting consciousness or pain perception.

Correct Answer: A

Rationale: The correct answer is A: Give N-acetylcysteine (Mucomyst). N-acetylcysteine is the antidote for acetaminophen overdose. It helps replenish glutathione, which is depleted by acetaminophen metabolism. This prevents liver damage. Choice B, chelation therapy, is not indicated for acetaminophen overdose. Choice C, oxygen therapy, is not directly related to acetaminophen overdose treatment. Choice D, drinking water, will not address the overdose and may not be safe in high doses. Therefore, the best course of action is to administer N-acetylcysteine to prevent liver damage in acetaminophen overdose.

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.