In patients with cystic fibrosis, why is it important to administer pancreatic enzymes with meals and snacks?

Cystic fibrosis management requires knowledge of exocrine gland dysfunction and the resulting obstruction of pancreatic ducts. Understanding how thick mucus prevents enzyme delivery to the duodenum is essential to explain the necessity of replacement therapy for digestive function. Choice A rationale Pancreatic enzymes serve a strictly metabolic and digestive function within the gastrointestinal tract. They do not have a direct physiological mechanism to enhance the immune system or alter the body's white blood cell response to infections in cystic fibrosis. Choice B rationale Cystic fibrosis related diabetes occurs due to pancreatic scarring affecting insulin production. Exogenous pancreatic enzymes assist in breaking down macronutrients but do not function to increase blood glucose levels; they manage malabsorption rather than endocrine hormonal balance or secretion. Choice C rationale Dehydration in cystic fibrosis is primarily managed through fluid and electrolyte replacement, especially sodium. While malabsorption can cause steatorrhea, the primary role of enzymes is nutrient breakdown rather than maintaining systemic hydration or preventing excessive fluid loss from tissues. Choice D rationale In cystic fibrosis, thick mucus blocks the release of lipase, protease, and amylase. Administering these enzymes with food ensures they are present in the duodenum to catalyze the breakdown of fats, proteins, and carbohydrates, facilitating essential nutrient absorption.