Correct Answer: D

Rationale: Promoting perianal skin integrity is crucial when caring for a young child with severe diarrhea as it helps prevent skin breakdown from the irritation caused by frequent stooling. Maintaining the IV (Choice A) may be necessary but is not directly related to managing perianal skin integrity. Taking daily weights (Choice B) is important for monitoring fluid status but not the priority when addressing perianal skin integrity. While replacing lost calories (Choice C) is essential, promoting perianal skin integrity takes precedence in preventing complications associated with skin breakdown.

Correct Answer: D

Rationale: The correct answer is D. Infants have a higher extracellular fluid requirement per unit of body weight, making them more susceptible to dehydration and electrolyte imbalances during illnesses such as diarrhea. Choice A is incorrect as cellular metabolism instability does not directly relate to the infant's condition described. Choice B is inaccurate as the proportion of water in the body is not the primary issue causing the infant's symptoms. Choice C is incorrect as renal function being immature does not explain the sudden change in the infant's health status; it is more related to fluid balance and dehydration.

Correct Answer: D

Rationale: Explaining the use of prescribed medications is crucial as it helps ensure the proper management of the child's condition post-discharge. Understanding how and when to administer medications is essential for the child's recovery. While teaching the parents about signs of infection, providing wound care instructions, and scheduling follow-up appointments are also important aspects of care, ensuring the correct use of prescribed medications takes precedence to prevent complications and promote the child's well-being.

Correct Answer: B

Rationale: The correct answer is B: Obesity. Children with Down syndrome are at a higher risk of obesity due to various factors such as lower metabolic rate, hormonal imbalances, and reduced physical activity levels. Addressing healthy eating habits early can help prevent obesity in these children. Choice A (Rickets) is incorrect because rickets is primarily associated with vitamin D deficiency and is not a common nutritional problem in children with Down syndrome. Choice C (Anemia) is incorrect as anemia may not be a common nutritional problem specific to children with Down syndrome. Choice D (Rumination) is incorrect as rumination is a behavioral disorder characterized by repeated regurgitation of food and is not a common nutritional problem associated with Down syndrome.

Correct Answer: D

Rationale: Toddlers are striving for autonomy during this developmental stage. Helping the child to develop internal controls, such as self-regulation and decision-making skills, enhances their sense of autonomy. Choice A, teaching the child to share, focuses more on social skills rather than autonomy. Choice B, helping the child learn society's roles, pertains to socialization rather than autonomy. Choice C, teaching the child to accept external limits, is about compliance with rules rather than fostering autonomy. Therefore, the most appropriate action to enhance a toddler's need for autonomy is to help them develop internal controls.