Correct Answer: D

Rationale: Flushing the PEG tube with water before and after feedings helps prevent clogging and maintains tube patency. Proper flushing is essential for avoiding complications related to tube blockages. Elevating the head of the bed is important for preventing aspiration during and after feedings, not specifically related to PEG tube complications. Aspirating gastric contents before administering medications is not routinely recommended for PEG tube care. Clamping the tube between feedings can lead to tube occlusion and is not a standard practice in PEG tube care.

Correct Answer: B

Rationale: The correct teaching for a client prescribed hydrochlorothiazide is to increase fluid intake to prevent dehydration. Hydrochlorothiazide is a diuretic that can lead to fluid loss and electrolyte imbalances, so adequate fluid intake is crucial. Choice A is incorrect because hydrochlorothiazide is typically taken in the morning to avoid nighttime urination. Choice C is incorrect as potassium-rich foods should not be avoided but monitored, as hydrochlorothiazide can cause potassium loss. Choice D is incorrect as potassium levels should be monitored regularly, but not necessarily weekly, unless indicated by the healthcare provider.

Correct Answer: B

Rationale: Asking the client for a description of the exercise schedule being followed is the most appropriate action for the nurse to take in this scenario. Understanding the timing and intensity of the client's exercise routine can help identify if the activity is contributing to sleep disturbances. Exercise too close to bedtime can cause difficulty falling asleep. Choices A, C, and D do not directly address the need to assess the exercise schedule and may not provide the necessary information to identify the potential cause of the client's sleep issue.

Correct Answer: D

Rationale: Proper hydration is crucial in managing sickle cell anemia (SCA) as it helps prevent sickling of red blood cells and reduces blood viscosity, which can lead to painful crises. Ensuring the child drinks enough fluids is essential to maintain adequate hydration levels and reduce the risk of complications. While nutritional guidelines and recognizing signs of infection are important aspects of care, maintaining proper hydration is the most immediate and critical factor in managing SCA and preventing crises.

Correct Answer: B

Rationale: The correct answer is B. An oxygen saturation of 89% indicates hypoxemia, which is below the normal range (usually 95-100%). This finding requires immediate intervention as it signifies inadequate oxygenation. Options A, C, and D are within normal limits and do not indicate an urgent need for intervention. Option A indicates a good oxygen saturation level, option C denotes a normal respiratory rate, and option D suggests a normal heart rate. Therefore, these options do not require immediate intervention compared to the critically low oxygen saturation level of 89% in option B.