Correct Answer: B

Rationale: In nephrotic syndrome, edema is a common symptom that is generalized and not easily noticeable, even by parents. However, an early sign that can be assessed by the nurse is periorbital edema, which refers to swelling around the eyes. This can be an initial indicator of nephrosis and may prompt further evaluation and intervention.

Correct Answer: B

Rationale: Children with brain tumors commonly experience frequent headaches due to increased intracranial pressure. This pressure can result in pain and discomfort, leading to headaches as a common symptom. Other symptoms may include nausea, vomiting, changes in vision, and behavioral changes, but headaches are a prominent feature in children with brain tumors.

Correct Answer: B

Rationale: The nurse should instruct the parent to expose the infant's skin to air as it helps in promoting the healing process of diaper dermatitis by allowing the skin to breathe and reducing moisture, which can worsen the condition.

Correct Answer: B

Rationale: Correct posture after feedings is crucial for an infant with gastroesophageal reflux to reduce the risk of regurgitation. Placing the infant upright helps prevent the backflow of stomach contents into the esophagus, minimizing symptoms of reflux.

Correct Answer: D

Rationale: After an appendectomy, applying a pillow against the abdomen to splint the incision site when coughing helps reduce pain by providing support and minimizing movement that could cause discomfort.