A patient with chronic obstructive pulmonary disease (COPD) is being cared for by a nurse. What is the most appropriate action to improve the patient's oxygenation?

Correct Answer: B

Rationale: Administering oxygen via nasal cannula as prescribed is the most appropriate action to improve the patient's oxygenation in COPD. Oxygen therapy helps maintain adequate oxygen levels in the blood, which is crucial for managing COPD. Encouraging the use of incentive spirometry, assisting with coughing and deep breathing exercises, and positioning the patient in high Fowler's position are all beneficial interventions, but administering oxygen is the priority for immediate oxygenation support in COPD.

Correct Answer: B

Rationale: The most appropriate method for assessing a patient's pain level is to use a standardized pain scale, such as a 0-10 scale. This method provides an objective and consistent way to measure and communicate the intensity of pain experienced by the patient. Choice A, observing facial expressions, can be subjective and may not always accurately reflect the level of pain. Choice C, asking the patient to rate their pain based on their mood, may be influenced by various factors unrelated to pain. Choice D, involving the patient's family members in assessing the pain, is not ideal as pain is a subjective experience that should be reported by the patient themselves.

Correct Answer: B

Rationale: Checking the patient's weight daily is the most reliable indicator of fluid status because weight changes can directly reflect fluid retention or loss. Monitoring vital signs (Choice A) can provide some information but is not as specific as weight changes. Measuring intake and output (Choice C) is crucial but may not always accurately reflect fluid balance. Monitoring urine color (Choice D) can give some insights into hydration levels, but it is not as reliable as daily weight checks for assessing overall fluid status.

Correct Answer: B

Rationale: The correct answer is to reposition the patient every 2 hours. Repositioning helps prevent the worsening of pressure ulcers by relieving pressure on affected areas and promoting blood circulation, which aids in healing. Applying a dressing (choice A) is important but not the priority compared to repositioning. Providing pain medication (choice C) is essential for comfort but does not address the root cause of the pressure ulcer. Cleaning the ulcer with normal saline (choice D) is part of wound care but does not take precedence over repositioning to prevent further tissue damage.

Correct Answer: B

Rationale: Confirming the patient's allergies before administering medications is crucial for patient safety as it helps prevent adverse reactions. Checking the patient's wristband is important for identification but may not directly impact medication safety. Documenting medications after administration is necessary but does not primarily promote safety during administration. Preparing medications at the medication cart, rather than the nurse's station, is preferred to ensure accuracy and proper medication handling, but it is not directly related to confirming allergies for safety.