Correct Answer: B

Rationale: The correct answer is B: Systemic vascular resistance (SVR). SVR reflects the resistance the heart must overcome to pump blood into the systemic circulation. By monitoring SVR, the nurse can assess the effectiveness of medications aimed at reducing left ventricular afterload, as these medications work by dilating blood vessels and reducing resistance. An effective reduction in afterload would lead to a decrease in SVR. A: Mean arterial pressure (MAP) is an indicator of perfusion pressure but may not directly reflect changes in afterload. C: Pulmonary vascular resistance (PVR) is specific to the pulmonary circulation and not directly related to left ventricular afterload. D: Pulmonary artery wedge pressure (PAWP) is a measure of left ventricular preload and filling pressures, not afterload.

Correct Answer: D

Rationale: The correct answer is D: Initiate CPR and call a code. In this scenario, the patient is critically ill with ventricular tachycardia, a life-threatening arrhythmia. Since there is no "do not resuscitate" order, the appropriate nursing action is to initiate CPR immediately to attempt to restore the patient's cardiac function and circulation. Calling a code will ensure that a team of healthcare providers can respond promptly with necessary interventions. Options A and B involve unnecessary delays in potentially life-saving interventions. Option C is incorrect as withholding intubation can compromise the patient's airway and oxygenation. Thus, option D is the most appropriate action to prioritize the patient's safety and well-being in this critical situation.

Correct Answer: B

Rationale: The correct answer is B: Assist with the intubation of the patient. In this scenario, the patient is unconscious and has ingested a potentially harmful substance. Intubation is the first priority to maintain the patient's airway and ensure adequate oxygenation. This step is crucial in preventing aspiration of gastric contents and securing the patient's respiratory status. Inserting a large-bore orogastric tube (choice A) is not the priority as airway management takes precedence. Preparing a syringe with saline (choice C) is unnecessary at this stage. Giving the first dose of activated charcoal (choice D) should only be done after securing the airway to prevent aspiration.

Correct Answer: C

Rationale: The correct answer is C because individualized visitation meets the unique needs of patients and family members, promoting holistic care and emotional support. Choice A is incorrect as strictly restricted visiting hours may hinder family involvement in care. Choice B is incorrect as children can provide comfort and support. Choice D is incorrect as unrestricted visiting may disrupt patient rest and care routines.

Correct Answer: B

Rationale: The correct answer is B: Assess neurological status every 30 minutes. This intervention is crucial for patients receiving neuromuscular blocking agents to monitor for any adverse effects such as respiratory depression or paralysis. Regular assessments help ensure early detection of complications and prompt intervention. A: Administering sedatives in conjunction with neuromuscular blocking agents can potentiate respiratory depression and lead to respiratory compromise. C: Avoiding interaction with the patient is not appropriate as communication and patient interaction are important aspects of nursing care. D: Restraint should be avoided as it can increase the risk of complications such as pressure ulcers, anxiety, and decreased respiratory function. Overall, regular neurological assessments are essential for ensuring patient safety and prompt intervention in case of any complications.