Correct Answer: B

Rationale: After a cardiac catheterization, the priority nursing care for a 3-year-old child is monitoring the site for bleeding. This is essential to promptly identify and address any signs of bleeding or hematoma formation, which are potential complications of the procedure. Encouraging early ambulation may be beneficial post-procedure but ensuring site integrity takes precedence. Restricting fluids until blood pressure stabilization is not a standard post-catheterization practice, as adequate hydration is crucial for recovery. Comparing the blood pressure of both lower extremities is not a priority immediate nursing action after a cardiac catheterization in a pediatric patient.

Correct Answer: D

Rationale: Pegs and pounding boards are recommended as play materials for toddlers to express their anger in a constructive manner. These tools provide a safe and effective outlet for the child's emotions through physical activity. Options A, B, and C do not offer the same interactive and expressive qualities that pegs and pounding boards provide. A ball and bat may encourage aggressive behavior, a wad of clay is more suitable for creative expression rather than anger management, and a punching bag may promote violent behavior which is not appropriate for toddlers.

Correct Answer: C

Rationale: The correct answer is C. At the age of 8, children are typically in the stage of industry vs. inferiority according to Erikson's psychosocial theory. This stage is characterized by a desire to engage in productive activities and take on responsibilities. Thus, the child will likely welcome opportunities for participation in self-care related to their diabetes management. Choices A, B, and D are incorrect. Choice A is inaccurate as children at this age are usually in the concrete operational stage of cognitive development, not abstract. Choice B is incorrect because while peer influence is significant, it has not reached its peak at this age. Choice D is wrong as achieving a sense of identity is a developmental task more commonly associated with adolescence, not 8-year-old children.

Correct Answer: B

Rationale: The correct answer is B: Diarrhea. Rotavirus infection commonly presents with symptoms such as watery diarrhea, vomiting, fever, and abdominal pain. While abdominal pain and vomiting are also associated with rotavirus infection, diarrhea is a hallmark feature. Constipation is not typically seen in cases of rotavirus infection. Therefore, the most likely clinical manifestation that the nurse would observe in a child with suspected rotavirus infection is diarrhea.

Correct Answer: B

Rationale: During a vaso-occlusive crisis in sickle cell anemia, ensuring adequate hydration is crucial because it helps to reduce the viscosity of the blood and prevent further sickling of the cells. Administering oxygen may be necessary in some cases to improve tissue oxygenation, but hydration is the priority to prevent complications. Monitoring vital signs is important, but hydration takes precedence during a vaso-occlusive crisis. Administering pain medication is important for pain management but does not address the underlying issue of vaso-occlusion.