Correct Answer: C

Rationale: Rationale: Option C is the correct answer because when caring for a patient with a pulmonary artery catheter receiving continuous enteral feedings, it is crucial to level and zero reference the transducer with the patient's head of bed elevated to 30 degrees. This position helps to ensure accurate hemodynamic measurements, as the head of bed elevation minimizes the impact of intra-abdominal pressure on the catheter readings. By referencing the transducer in this position, the nurse can obtain reliable and precise hemodynamic values. Summary of Incorrect Choices: A: This option is incorrect because delaying documentation until the patient is in the supine position can lead to inaccuracies in the hemodynamic readings due to changes in patient positioning. B: Leveling and zero referencing the transducer with the patient in the supine position is not ideal as it does not account for the impact of intra-abdominal pressure on the catheter readings in patients receiving enteral feedings. D: Leveling and zero referencing

Correct Answer: D

Rationale: The correct answer is D: To validate a nurse’s knowledge of critical care nursing. Certification in critical care nursing validates a nurse's expertise and knowledge in this specialized area of nursing. It demonstrates that the nurse has met certain standards and competencies in critical care practice. This certification ensures that the nurse is well-equipped to provide high-quality care to critically ill patients. A: To assure the consumer that critical nurses will not make a mistake - This choice is incorrect because certification does not guarantee that nurses will not make mistakes. It focuses on validating knowledge and skills rather than infallibility. B: To help prepare the critical care nurse for graduate school - This choice is incorrect as certification is more focused on practice readiness rather than academic preparation. C: To assist in promoting magnet status for a facility - This choice is incorrect as magnet status relates more to the overall excellence and quality of nursing care in a facility, not individual certification.

Correct Answer: B

Rationale: The correct answer is B. Increased peak inspiratory pressure on the ventilator would cue the nurse to the potential of ARDS in a patient with respiratory distress. ARDS is characterized by severe respiratory failure with bilateral pulmonary infiltrates. An increase in peak inspiratory pressure on the ventilator indicates that the lungs are becoming stiffer, which is a common finding in ARDS due to increased inflammation and fluid accumulation in the alveoli. This finding alerts the nurse to the possibility of ARDS and the need for further assessment and intervention. Summary of other choices: A: Increased oxygen saturation via pulse oximetry is a nonspecific finding and may not specifically indicate ARDS. C: Normal chest radiograph with enlarged cardiac structures is more indicative of heart failure rather than ARDS. D: PaO2/FiO2 ratio > 300 is a criterion used to diagnose ARDS, but a value higher than 300 actually indicates mild ARDS, so it would not necessarily cue the nurse

Correct Answer: A

Rationale: The correct answer is A because it acknowledges the family member's feelings while offering support and resources for managing the situation gradually. By providing resources, the nurse empowers the family member to learn how to handle things independently over time. This approach promotes self-reliance and resilience. Choice B focuses on time rather than active coping strategies, which may not address the family member's immediate needs. Choice C suggests shifting responsibilities to another family member without considering the emotional impact. Choice D jumps to the conclusion of needing professional counseling without exploring other potential solutions or support systems.

Correct Answer: B

Rationale: The correct answer is B: Oxygen that is chemically combined with hemoglobin. This is because oxygen primarily travels in the blood by binding to hemoglobin in red blood cells, forming oxyhemoglobin. This process allows for efficient transport of oxygen to tissues throughout the body. Choices A, C, and D are incorrect because: A: Alveolar oxygen tension refers to the partial pressure of oxygen in the alveoli of the lungs, not the specific form of oxygen in the blood. C: Oxygen physically dissolved in plasma refers to the small amount of oxygen that is not bound to hemoglobin and is less significant in oxygen transport compared to oxygen bound to hemoglobin. D: Total oxygen consumption is the overall amount of oxygen utilized by the body, not specifically the form of oxygen bound to hemoglobin for transport.