Correct Answer: D

Rationale: In a postoperative patient, an oxygen saturation level of 88% on room air indicates a significant drop below the normal range, suggesting potential respiratory distress. This finding requires immediate intervention by the nurse to ensure the patient receives adequate oxygenation. A heart rate of 88 beats per minute is within the normal range, making it a less concerning finding. A blood pressure of 130/80 mmHg falls within the normal range for blood pressure and does not require immediate intervention. Crackles heard in the lung bases may indicate fluid accumulation but may not always require immediate intervention unless accompanied by other concerning signs or symptoms.

Correct Answer: C

Rationale: The correct answer is C. Using a clean technique for inserting a urinary catheter increases the risk for healthcare-associated infections. Invasive procedures like catheter insertion require a sterile technique to prevent introducing pathogens into the urinary tract. Choices A and B demonstrate appropriate infection control measures by emphasizing the use of sterile or aseptic techniques. Choice D represents an incorrect technique that can lead to the introduction of bacteria from the rectum into the urinary tract, potentially causing infections.

Correct Answer: B

Rationale: The correct answer is to assess the patient's oxygen saturation. In suspected pneumonia, ensuring adequate oxygenation is critical to monitor respiratory function. Auscultating lung sounds is important but assessing oxygen saturation takes precedence as it directly reflects the patient's oxygen levels. Monitoring white blood cell count is more related to infection assessment rather than immediate respiratory status. Checking skin integrity is essential for overall patient care but is not the priority in a patient with suspected pneumonia.

Correct Answer: C

Rationale: The correct answer is C because documenting bilateral radial pulses being present, 2+, and hands warm to the touch is crucial when caring for a patient in restraints. This information helps in monitoring circulation and assessing the patient's well-being. Choices A, B, and D are incorrect because they do not provide essential information related to the patient's safety and well-being while in restraints.

Correct Answer: B

Rationale: In a disaster situation like a building collapse, the nurse should attend to the victim with a partial amputation of a leg who is bleeding profusely first. This victim is at immediate risk of severe blood loss, which can be life-threatening. It is crucial to address life-threatening injuries like severe bleeding before attending to other less urgent cases. The victim with the amputation requires immediate intervention to control bleeding and stabilize their condition. Victims who are already deceased or have less urgent injuries can be attended to after addressing the critical cases.