Critical Care Nursing Cardiac Questions

Correct Answer: A

Rationale: The correct answer is A: Advance directive. An advance directive is a legal document that outlines a person's wishes regarding medical treatment and care at the end of life. It allows individuals to specify their preferences for medical interventions if they become unable to communicate. Summary of other choices: B: Guardianship ad item - This does not specifically pertain to an individual's end-of-life care wishes. C: Healthcare proxy - While similar to an advance directive, a healthcare proxy specifically designates a person to make medical decisions on behalf of the individual, rather than specifying their own wishes. D: Power of attorney - This grants someone the authority to make legal decisions on behalf of the individual, but it does not specifically address end-of-life care preferences.

Correct Answer: B

Rationale: The correct answer is B: The RN uses a closed-suction technique to suction the patient. This is the safe action because closed-suction technique minimizes the risk of ventilator-associated infections by maintaining a closed system during suctioning, reducing the exposure to pathogens. Closed-suction systems also help maintain lung compliance and oxygenation levels during the suctioning process. Rationale: Option A is incorrect because suctioning every 1 to 2 hours may be too frequent and can lead to hypoxia and mucosal damage. Option C is incorrect as taping the connection between the ventilator tubing and ET can interfere with the proper functioning of the ventilator and increase the risk of disconnection. Option D is incorrect because changing ventilator circuit tubing routinely every 48 hours is not evidence-based practice and can increase the risk of contamination and unnecessary costs.

Correct Answer: B

Rationale: The correct answer is B. The patient's pH of 7.30 indicates acidosis, PaCO2 of 38 mm Hg is low, and HCO3 of 16 mEq/L is also low, suggesting metabolic acidosis. This finding requires immediate action as untreated acidosis can lead to serious complications. Choice A (morning serum blood glucose of 128 mg/dL) is within normal range and does not require immediate action. Choice C (pulmonary artery temperature of 97.8�F) is a normal temperature and does not require immediate action. Choice D (central venous pressure of 8 mm Hg) is within normal range and does not require immediate action.

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: C

Rationale: The correct answer is C because it explains that the decision to remove life-sustaining treatments is based on the fact that these treatments are not helping the patient and may actually be causing discomfort. This rationale aligns with the principle of beneficence, which emphasizes doing good and avoiding harm to the patient. It also respects the patient's autonomy by prioritizing their well-being and quality of life. Choice A is incorrect as it focuses on financial reasons rather than the patient's best interest. Choice B is incorrect because it prioritizes hospital resources over individual patient care. Choice D is incorrect as it lacks clarity and may come across as insensitive to the significant other's concerns.