Correct Answer: A

Rationale: The correct answer is A: American Association of Critical-Care Nurses (AACN). This organization focuses exclusively on critical care nursing, offering specialized education, resources, and certifications for critical care nurses. AACN advocates for high standards of care in critical care settings. The other choices do not specifically cater to critical care nursing practice. The American Heart Association focuses on cardiovascular health, the American Nurses Association is a general nursing organization, and the Society of Critical Care Medicine is more physician-centric. Therefore, A is the best choice for supporting critical care nursing practice.

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: C

Rationale: The correct answer is C: Teach the patient the reason for the use of prophylactic antibiotics. This is the most important action because human bites can introduce harmful bacteria into the wound, leading to infection. Prophylactic antibiotics help prevent infection in deep human bite wounds. Choice A is incorrect because rabies immune globulin is not indicated for human bite wounds. Choice B is incorrect because suturing human bite wounds can trap bacteria and increase the risk of infection. Choice D is incorrect because keeping the wounds dry is not sufficient; proper wound cleaning and antibiotic treatment are essential in this case.

Correct Answer: B

Rationale: The correct answer is B: “My assessment indicates potential fluid overload.” The patient is showing signs of fluid overload, such as increased heart rate, respiratory rate, elevated blood pressure, pulmonary artery pressures, frothy secretions, and crackles in lung fields. These symptoms suggest fluid is accumulating in the lungs, causing pulmonary congestion. This can lead to impaired gas exchange and respiratory distress. The nurse's recognition of these signs is crucial for prompt intervention to prevent further complications. Other choices are incorrect because there are no indications of a myocardial infarction, PVCs compromising cardiac output, or a hypertensive crisis based on the given information.

Correct Answer: A

Rationale: The correct answer is A. A decrease in the arterial pressure (hypotension) with a low diastolic pressure (46 mmHg) may indicate inadequate perfusion, possibly due to inadequate cardiac output from the mechanical ventilation. This suggests that a change in ventilator settings may be required to improve oxygenation and perfusion. Option B is incorrect because a heart rate of 58 beats/minute alone does not provide direct information on the patient's hemodynamic status. Option C is incorrect as an increased stroke volume would usually be a positive indicator; it does not necessarily indicate a need for changing the ventilator settings. Option D is incorrect as a stroke volume variation of 12% is within normal limits and does not necessarily require a change in ventilator settings.