Final answer:
A nurse should instruct parents of a child with cystic fibrosis to give pancreatic enzymes with meals, high-calorie foods and snacks, water-soluble vitamins, and high-protein foods for proper nutrition.
Step-by-step explanation:
A nurse teaching parents of a child with cystic fibrosis should include several important nutritional instructions to manage the disease effectively. Pancreatic enzymes should be given with meals, as they help in the digestion of nutrients due to the reduced natural enzyme activity in people with cystic fibrosis. High-calorie foods and snacks are essential to meet the increased metabolic demands and to overcome the challenges of malabsorption caused by mucus blockages. Additionally, administering water-soluble vitamins is critical, as fat-solubility is compromised, leading to a deficiency of these essential vitamins. Foods high in proteins should also be provided to support growth and repair, which are crucial for children suffering from cystic fibrosis.