Correct Answer: D

Rationale: An endotracheal tube is crucial for managing the airway of a newborn with a diaphragmatic hernia. In this condition, there may be respiratory distress due to incomplete development of the diaphragm, allowing abdominal organs to move into the chest cavity and compress the lungs. The endotracheal tube helps in securing the airway and providing respiratory support if needed until definitive treatment can be initiated.

Correct Answer: B

Rationale: Encouraging the child to perform independent self-care is essential when managing juvenile idiopathic arthritis. This instruction helps minimize pain and stiffness in the child's joints while promoting mobility and independence. It is crucial for the child to learn self-management skills early to cope better with the condition in the long term.

Correct Answer: B

Rationale: Tachycardia is a common early sign of dehydration in infants, especially when presenting with dry mucous membranes and diarrhea. The increased heart rate is the body's compensatory mechanism to maintain cardiac output in response to dehydration. Bradycardia, increased blood pressure, and normal fontanels are not typically associated with early to moderate dehydration in infants.

Correct Answer: B

Rationale: A respiratory rate of 45/min is above the expected reference range for a 3-year-old toddler and may indicate respiratory dysfunction or acute respiratory distress. It is essential for the nurse to report this finding promptly to the healthcare provider for further evaluation and intervention.

Correct Answer: D

Rationale: Maintaining a consistent bedtime routine is essential for children with ADHD as it helps in managing their symptoms effectively. Consistency in bedtime routines aids in regulating the child's sleep patterns, promoting better rest, and ultimately improving their behavior and focus during the day.