When assessing a patient with chronic lung disease, the nurse finds a sudden onset of agitation and confusion. Which action should the nurse take first?

Correct Answer: D

Rationale: The correct action is to assess vital signs and pulse oximetry first. This is essential to determine if the patient's agitation and confusion are due to hypoxia, a common complication in chronic lung disease. Monitoring the patient every 10-15 minutes (choice A) may delay identifying and addressing the underlying issue. Notifying the healthcare provider immediately (choice B) is important but assessing the patient's condition takes precedence. Attempting to calm and reassure the patient (choice C) is helpful but not the priority when the patient's safety is at risk. Assessing vital signs and pulse oximetry (choice D) is crucial for immediate intervention if hypoxia is detected.

Correct Answer: A

Rationale: The correct answer is A: Continue to monitor the client without taking any action. The ABG results indicate a pH within the normal range (7.35-7.45), PaO2 is slightly lower than normal but still adequate for tissue oxygenation, PaCO2 is within the normal range (35-45), and HCO3 is normal (22-26). These values indicate that the client's acid-base balance is within normal limits, and no immediate intervention is needed. Encouraging deep breaths and coughing (B) may be beneficial for some respiratory conditions but is not indicated here. Administering sodium bicarbonate IVP (C) is unnecessary as the client's pH and HCO3 levels are normal. Notifying the respiratory therapist (D) is not warranted since the ABG results do not indicate any acute respiratory distress. Monitoring the client (A) is the appropriate action as the ABG results are stable.

Correct Answer: B

Rationale: The correct answer is B: Universal Serial Bus. USB is a common interface used to connect devices to a computer. Nursing informatics often involves using various devices that connect via USB. Choice A, Updated System Binary, is incorrect as it does not accurately describe USB. Choices C and D are blank options, making them obviously incorrect. In summary, USB stands for Universal Serial Bus, a widely used interface in nursing informatics for connecting devices to computers.

Correct Answer: B

Rationale: The correct answer is B: 12 feet. This distance is established to prevent fires as oxygen supports combustion. Smoking within 12 feet of oxygen administration poses a significant fire hazard. Choice A (4 meters) is incorrect as it is greater than 12 feet. Choices C and D are incorrect as they do not provide a specific distance requirement.

Correct Answer: C

Rationale: The correct answer is C: Data saturation. In qualitative research, data saturation is the point where new data no longer brings additional insights or changes in themes. This principle guides sample size determination as it ensures enough data is collected to reach this saturation point, leading to a comprehensive understanding of the phenomenon under study. Effect size (A) is more relevant in quantitative research, while the number of variables (B) and sub-group analysis (D) are factors that may influence the complexity of the study but are not directly related to determining sample size in qualitative research.