Correct Answer: A

Rationale: Monitoring liver function tests regularly is crucial when a child with JIA is on methotrexate due to the potential hepatotoxicity associated with this medication. Methotrexate can lead to liver damage, hence monitoring helps in early detection and intervention. Encouraging regular exercise (Choice B) is generally good for children with JIA to maintain joint mobility and muscle strength, but it is not directly related to methotrexate therapy. Providing high-calorie snacks (Choice C) is not a priority consideration for a child on methotrexate. Encouraging frequent handwashing (Choice D) is important for infection control, but it is not specifically associated with methotrexate therapy in a child with JIA.

Correct Answer: D

Rationale: The major characteristic of a cardiac malformation associated with left-to-right shunting is increased blood flow to the lungs. This increased flow can lead to pulmonary hypertension and heart failure if left untreated. Elevated hematocrit (Choice A) is not a typical characteristic of this condition. Severe growth retardation (Choice B) is not directly associated with left-to-right shunting. Clubbing of the fingers and toes (Choice C) is more commonly seen in conditions involving chronic hypoxia.

Correct Answer: D

Rationale: Asking the parents if they smoke in the home is the most relevant question as exposure to secondhand smoke can exacerbate respiratory symptoms like wheezing and difficulty breathing in children. This information is crucial for identifying potential triggers for the child's symptoms. Inquiring about child safety in the home, asking about the child's temperament, and inquiring about the child's diet, while important aspects of care, may not directly address the respiratory symptoms the child is experiencing.

Correct Answer: C

Rationale: Moving a child to a regular bed by the appropriate age is not recommended as it can increase the risk of falls. Toddlers should transition to a regular bed only when developmentally ready to prevent accidents. Keeping medications in a medicine cabinet (Choice A) promotes safety by preventing accidental ingestion. Securing gates at entrances to staircases (Choice B) helps prevent falls down stairs. Buying shoes that close with Velcro rather than laces (Choice D) is a good practice to prevent tripping and falling.

Correct Answer: A

Rationale: The correct answer is to eat more food when planning to exercise more than usual. Increased physical activity requires more energy, so additional food intake is necessary to compensate for the increased energy expenditure. This helps maintain blood sugar levels within the target range. Choice B is incorrect because the mode of insulin administration does not change based on physical activity; the type and dose of insulin remain the same unless adjusted by a healthcare provider. Choice C is incorrect because insulin timing should not be adjusted solely based on anticipated exercise; consistent timing of insulin doses is crucial for stable blood sugar control. Choice D is incorrect because consuming foods with sugar may lead to unstable blood sugar levels and is not the recommended way to compensate for extra exercise, as it can result in sudden spikes and drops in blood glucose levels, affecting overall diabetes management.