Correct Answer: C

Rationale: A high-calorie diet is recommended for children with cystic fibrosis due to their increased energy needs and malabsorption issues. Cystic fibrosis affects the pancreas, leading to poor digestion and absorption of nutrients, particularly fats, which requires dietary adjustments to maintain adequate nutrition. High carbohydrate (Choice A) is not the primary focus; the emphasis is on overall calorie intake. Low protein (Choice B) is not recommended as protein intake is essential for growth and development. Low fat (Choice D) is not the best option as fat-soluble vitamin absorption is already compromised in cystic fibrosis, hence fat restriction is not a priority.

Correct Answer: A

Rationale: The correct answer is A, Patent ductus arteriosus. This condition is characterized by a continuous 'machine-like' murmur due to abnormal blood flow between the aorta and pulmonary artery. Ventricular septal defect (choice B) is characterized by a harsh holosystolic murmur, atrial septal defect (choice C) typically presents with a fixed split S2 and a pulmonary flow murmur, and coarctation of the aorta (choice D) is associated with a systolic murmur in the back and bilateral lower extremities.

Correct Answer: C

Rationale: The correct priority in dealing with a child suspected of having Wilms tumor is ensuring the abdomen is protected from palpation. Palpating the abdomen could lead to tumor dissemination, which is crucial to prevent the spread of cancerous cells. Intervening to minimize bleeding, monitoring temperature for infection, and teaching parents how to manage parenteral nutrition are not the immediate priorities in suspected cases of Wilms tumor.

Correct Answer: C

Rationale: Corrected Rationale: Currant jelly-like stools, which contain blood and mucus, are characteristic of Meckel diverticulum. This symptom occurs due to the bleeding from the ectopic gastric mucosa present in the diverticulum. Steatorrhea (choice A) is not typically associated with Meckel diverticulum. Clay-colored stools (choice B) are seen in conditions affecting the biliary system. Loose stools with undigested food (choice D) may indicate malabsorption issues, but it is not specifically linked to Meckel diverticulum.

Correct Answer: A

Rationale: The primary treatment goal for a child with juvenile idiopathic arthritis is pain management. Juvenile idiopathic arthritis is a chronic condition with no known cure, making pain management crucial to improve the quality of life for these children. While reducing joint deformity and physical therapy are important aspects of managing the condition, the primary focus is on alleviating pain and improving function.