Certified Neuroscience Registered Nurse (CNRN) Practice Exam

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What is the purpose of creating a 30ml pouch in Roux-en-Y gastric bypass surgery?

To completely remove the stomach
To assist in bile and pancreatic enzyme production and absorption
To facilitate the intake of solid foods
To increase stomach capacity

The correct answer is: To assist in bile and pancreatic enzyme production and absorption

The creation of a 30ml pouch during Roux-en-Y gastric bypass surgery serves to facilitate the production and absorption of bile and pancreatic enzymes. This small pouch, which is formed from the upper portion of the stomach, acts as a new stomach that is separated from the rest of the stomach and the digestive tract. In this surgical technique, the pouch is connected to the small intestine bypassing a significant portion of the stomach and duodenum. This configuration not only restricts food intake, aiding in weight loss, but it also allows for a more controlled flow of food into the intestine where bile and pancreatic enzymes can mix with the food for proper digestion and nutrient absorption. This modification enhances the patient's ability to lose weight effectively while still allowing for a certain level of digestive function, which is crucial for overall health after the surgery. Maintaining some access to bile and pancreatic enzymes is essential for the digestive process and helps prevent deficiencies that can occur with extensive bypassing of the intestinal tract.