Correct Answer: A

Rationale: Rationale: A: Education on protection of human subjects is crucial for nurses to understand ethical principles when conducting research studies. It ensures compliance with ethical guidelines and protection of research participants. B: Participation of staff nurses on ethics committees is not directly related to conducting research studies and may not specifically involve protection of human subjects. C: Written descriptions of how nurses participate in ethics programs do not necessarily focus on research studies and may not cover the specific ethical considerations required in research. D: Written policies and procedures related to response to ethical issues are important but may not provide the necessary knowledge on protection of human subjects for conducting research studies.

Correct Answer: D

Rationale: The correct answer is D: Increased jugular venous distention. In a patient with a subarachnoid hemorrhage and on mechanical ventilation, increased jugular venous distention can indicate increased intracranial pressure, which can be life-threatening. The nurse should notify the healthcare provider immediately as it may require urgent intervention to prevent further neurological deterioration. A: Oxygen saturation of 93% is within the acceptable range for a patient on mechanical ventilation and may not require immediate notification. B: Respirations of 20 breaths/minute are within normal limits for a ventilated patient and do not necessarily indicate a critical condition. C: Green nasogastric tube drainage may indicate the presence of bile and could be related to gastrointestinal issues, but it does not pose an immediate threat to the patient's neurological status.

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: C

Rationale: The correct answer is C: Treatment for elevated blood pressure. In the initial stress response, the body releases adrenaline and cortisol, leading to increased heart rate and blood pressure. Treating elevated blood pressure is crucial to prevent complications like heart attack or stroke. Adequate pain control (A) and intravenous sedation (B) may help manage symptoms but do not directly address the physiological response to stress. Ignoring an elevated glucose level (D) is not recommended as stress can impact blood sugar levels. Treatment for elevated blood pressure directly targets the physiological response to stress, making it the best nursing action in this scenario.

Correct Answer: C

Rationale: The correct answer is C: Pulmonary vascular resistance (PVR). PVR is the most appropriate parameter to monitor in a patient with pulmonary hypertension as it directly reflects the resistance in the pulmonary circulation. A decrease in PVR indicates a reduction in the constriction of blood vessels in the lungs, suggesting improvement in pulmonary hypertension. Monitoring CVP (A) is more relevant in assessing fluid status, SVR (B) is more indicative of systemic vascular tone, and PAWP (D) is useful in assessing left-sided heart function, but they are not as specific to evaluating the effectiveness of treatment for pulmonary hypertension.