Correct Answer: D

Rationale: The correct answer is D: Attach cardiac monitoring leads before the procedure. This is essential to monitor the patient's cardiac rhythm and detect any abnormalities during catheter insertion. Cardiac monitoring leads provide real-time information on the patient's heart rate and rhythm, allowing the nurse to promptly address any complications. A: Determining if the cardiac troponin level is elevated is not directly related to assisting with pulmonary artery catheter insertion. B: Auscultating heart and breath sounds during insertion is important but does not take precedence over attaching cardiac monitoring leads. C: Placing the patient on NPO status before the procedure may be necessary for other procedures, but it is not specifically required for assisting with pulmonary artery catheter insertion.

Correct Answer: A

Rationale: The correct answer is A because instructing the family on where the patient can be touched and what to say helps empower them to interact appropriately with the patient. This action promotes the family's involvement in the patient's care, encourages communication, and fosters a supportive environment. Choice B is incorrect as engaging in social conversation may not address the family's hesitance to approach the patient directly. Choice C is incorrect because waiting for visiting hours to provide information may delay necessary support for the family. Choice D is incorrect as leaving the family without guidance may perpetuate their discomfort and hinder their ability to provide emotional support to the patient.

Correct Answer: C

Rationale: The correct answer is C: Zero reference the system daily. Zero referencing ensures accuracy and calibration of pressure monitoring system by setting the baseline pressure to zero. This is crucial to prevent inaccuracies in measurements. Choice A is important but doesn't directly address the accuracy of the monitoring system. Choice B may help in preventing errors but doesn't address the accuracy of pressure measurement. Choice D is important for alerting the nurse but doesn't directly relate to the accuracy of hemodynamic monitoring.

Correct Answer: D

Rationale: The correct answer is D: Sense of loss of control of the situation. The wife's demand to reassign the nurse indicates her need for control over her husband's care, as she may feel overwhelmed by the sudden cardiac arrest and hospitalization. By requesting a different nurse, she seeks to regain a sense of control and assurance. The other choices are incorrect because: A does not align with the wife's immediate concern, B does not explain her request for a nurse reassignment, and C does not address her emotional response to the situation.

Correct Answer: B

Rationale: The correct answer is B: Offering the patient a patient-controlled analgesic device. This intervention allows the patient to self-administer pain relief, which can help alleviate discomfort associated with mechanical ventilation and reduce agitation. Breathing exercises (choice A) may not address the root cause of agitation. Asking for antianxiety medication (choice C) may not be immediate or ideal due to potential side effects. Offering an MP3 player (choice D) may provide distraction but may not effectively address the agitation caused by the ventilator.