Correct Answer: D

Rationale: Administering factor VIII as prescribed is the priority intervention for a child with hemophilia experiencing joint pain and swelling. Factor VIII replacement therapy is crucial in managing bleeding episodes and preventing further damage to the affected joint in individuals with hemophilia.

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: D

Rationale: Flaring of the nares is a clinical sign of acute respiratory distress in infants. It indicates an increased effort to breathe and is a crucial finding that requires immediate attention, as it signifies the child is having difficulty breathing and may be in respiratory distress.

Correct Answer: D

Rationale: The startle reflex should diminish by this age; persistence requires evaluation.

Correct Answer: C

Rationale: The correct action for the nurse to implement when the chemotherapy infusion is complete is to flush the mediport with saline and heparin solution. This process helps prevent clotting and ensures the patency of the port, which is essential for future medication administrations and blood draws.