Correct Answer: D

Rationale: Erikson's theory of psychosocial development outlines that the failure to establish a sense of competence during the industry vs. inferiority stage results in feelings of inferiority. This stage occurs during middle childhood where children strive to master skills and tasks. If they are unable to meet challenges successfully, they may start feeling inferior to their peers and may lack confidence in their abilities.

Correct Answer: B

Rationale: In pediatric patients, digoxin administration is guided by the heart rate. If the child's heart rate is below the established threshold, which is typically 90-100 beats per minute in a 4-year-old, the medication should be withheld, and the healthcare provider should be notified for further evaluation and instructions.

Correct Answer: A

Rationale: In a 10-year-old with newly diagnosed osteomyelitis, the most important information for the nurse to obtain is the recent history of infection recurrences. This is crucial because osteomyelitis is an infection of the bone, and assessing for any recent recurrence of infections can help in determining the possible source of the osteomyelitis and guide the treatment plan accordingly.

Correct Answer: B

Rationale: Coarctation of the aorta causes narrowing of the aorta, reducing blood flow to the lower extremities, leading to higher blood pressure in the arms.

Correct Answer: C

Rationale: Increased urine output is a positive sign indicating that the child's hydration status is improving. It suggests that the kidneys are functioning more effectively and able to excrete urine, which is a crucial indicator of improved hydration levels in a dehydrated patient.