Correct Answer: D

Rationale: A low-phenylalanine diet is necessary for infants with PKU because it helps prevent the accumulation of phenylalanine, which can result in brain damage. Fat-free (Choice A) and protein-enriched (Choice B) diets are not specifically indicated for PKU. While phenylalanine-free (Choice C) may seem logical, complete elimination of phenylalanine is not practical or safe as it is an essential amino acid. Therefore, the correct choice is a low-phenylalanine diet, which restricts phenylalanine intake to a safe level.

Correct Answer: B

Rationale: The correct answer is to 'Apply topical corticosteroids as prescribed.' Atopic dermatitis is a condition characterized by inflammation and itchiness of the skin. Topical corticosteroids are commonly used to reduce inflammation and relieve symptoms in atopic dermatitis. Teaching the caregiver to apply the medication as prescribed by the healthcare provider is crucial for managing the child's condition effectively. Choices A, C, and D are not the priority discharge teaching for atopic dermatitis. While avoiding triggers that cause flare-ups and contact with sick individuals can be beneficial, the immediate focus should be on proper medication administration to address the underlying inflammation and symptoms of atopic dermatitis.

Correct Answer: B

Rationale: When parents of a toddler request to be present during a procedure, it is crucial to conduct an individual assessment of the parents. This assessment helps healthcare professionals understand the parents' ability to cope with the procedure, provide support to their child, and ensure a safe and comfortable environment for all involved. Choice A, the type of procedure to be performed, while important, is not the most critical factor in this scenario. Choice C, whether the toddler wants the parents present, is significant but secondary to assessing the parents themselves. Choice D, probable reaction to the toddler's response to pain, is important but focuses more on the child's reaction rather than the parents' capacity to provide appropriate support.

Correct Answer: C

Rationale: Peripheral edema is often considered the last sign of heart failure in infants and children. It indicates significant fluid retention and circulatory compromise. Tachypnea (increased respiratory rate) and tachycardia (increased heart rate) are early signs of heart failure due to inadequate cardiac output. Periorbital edema, while a sign of excess fluid, typically occurs earlier in the progression of heart failure compared to peripheral edema.

Correct Answer: B

Rationale: For a 2-year-old child, the maximum recommended amount of fluid for an isotonic enema is between 155 to 250 mL to prevent overdistension and potential harm. Choice A (100 to 150 mL) is too low and may not be effective in achieving the desired outcome. Choices C (255 to 360 mL) and D (365 to 500 mL) exceed the safe range for a 2-year-old child and can lead to overdistension, electrolyte imbalance, or other complications. Therefore, the correct answer is B.