Correct Answer: B

Rationale: Administering pain medication is the most crucial nursing intervention during a vaso-occlusive crisis in sickle cell anemia. Pain management is a priority to alleviate the patient's discomfort and improve outcomes. Administering oxygen may be necessary in some cases but is not the primary intervention for vaso-occlusive crisis. Monitoring fluid intake is important in sickle cell anemia but is not the priority during a crisis situation. Encouraging physical activity is contraindicated during a vaso-occlusive crisis as it can exacerbate pain and complications.

Correct Answer: B

Rationale: The correct answer is "B: Rolls over." At 6 months, most infants can roll over, which increases the risk of falls. Emphasizing the infant's ability to roll over is crucial to highlight the need for careful supervision and accident prevention. Choices A, C, and D are incorrect because sitting up, crawling short distances, and standing while holding on to furniture typically develop later in an infant's motor skills progression and are not as directly associated with an increased risk of accidents at this stage.

Correct Answer: B

Rationale: The priority nursing intervention for a 7-year-old child with type 1 diabetes mellitus is to monitor blood glucose levels. This is crucial for managing and adjusting insulin therapy effectively. Administering insulin as prescribed is important, but monitoring blood glucose levels takes precedence as it guides insulin administration. Teaching the child how to self-administer insulin and encouraging regular exercise are also important aspects of diabetes management, but they are not the priority in this situation.

Correct Answer: D

Rationale: After undergoing surgery for pectus excavatum correction with steel bar placement, the nurse should instruct the parents to avoid placing the child in a side-lying position. This position should be avoided to prevent displacement of the steel bar, which could compromise the surgical outcome. Semi-Fowler, supine, and high Fowler positions do not pose the same risk of displacing the steel bar and are generally safe and comfortable for the child in this postoperative period.

Correct Answer: B

Rationale: The correct dietary instruction for a child with GERD is to avoid gluten. Gluten is a protein found in wheat, barley, and rye, and it can exacerbate GERD symptoms in some individuals. Avoiding gluten can help reduce inflammation and irritation in the gastrointestinal tract, thereby alleviating symptoms of GERD. Choices A, C, and D are incorrect because while spicy foods, high-fat foods, and dairy products can trigger GERD symptoms in some individuals, avoiding gluten specifically is more relevant for managing GERD.