Correct Answer: B

Rationale: The correct answer is to recheck the blood pressure before calling for help. When caring for a client with unstable blood pressure, the nurse's priority is to ensure an accurate assessment. Rechecking the blood pressure will confirm the instability and guide further actions. Asking the charge nurse for assistance (Choice A) is important but should come after assessing the situation. Monitoring the client's blood pressure closely (Choice C) is essential, but the immediate action should be to recheck and confirm the current status. Administering antihypertensive medication immediately (Choice D) without a confirmed assessment can be dangerous and is not the initial priority.

Correct Answer: A

Rationale: The correct answer is to maintain the patient's oxygen saturation above 90% when caring for a patient with COPD. In COPD, impaired gas exchange leads to decreased oxygen levels in the blood. By ensuring oxygen saturation remains above 90%, healthcare providers can prevent hypoxia and its complications. Administering bronchodilators as prescribed (Choice B) is an important intervention in managing COPD symptoms, but it is not the primary goal. Improving the patient's nutritional intake (Choice C) and encouraging the patient to limit physical activity (Choice D) are also essential aspects of COPD management, but they are not the primary goal when caring for a patient with this condition.

Correct Answer: B

Rationale: The correct answer is B: Providing wigs and other coping resources helps clients manage the emotional effects of chemotherapy-related hair loss. Encouraging the client to cut their hair short before chemotherapy (Choice A) is not necessary as hair loss may still occur. Assuring the client that hair loss will be minimal (Choice C) may provide false hope as hair loss is a common side effect of chemotherapy. Offering medication to reduce hair loss (Choice D) is not a typical approach as chemotherapy-related hair loss is often an expected side effect that cannot be entirely prevented with medication.

Correct Answer: B

Rationale: The correct action to promote healing in a patient with impaired skin integrity is to use sterile saline to clean the wound. Sterile saline helps prevent infection and promotes healing of wounds by keeping the area clean. Applying a dry, sterile dressing (Choice A) may not be effective as it does not address the need for wound cleaning. Applying a warm compress (Choice C) may not be suitable for all types of wounds and could potentially cause harm. Keeping the wound open to air (Choice D) is generally not recommended as it can lead to infection and slow down the healing process.

Correct Answer: B

Rationale: Checking the placement of the NG tube before each feeding is crucial to ensure it is correctly positioned and safe to use. Option A is incorrect as routine suctioning can lead to complications and should only be done as needed. Option C is not necessary unless there are specific instructions for flushing. Option D is incorrect as the NG tube should only be removed by healthcare professionals based on medical criteria, not solely based on the patient's comfort.