After total gastrectomy, there are many complications, one of which is called dumping syndrome, which means: "After gastrectomy, due to the loss of the control function of the pylorus, the gastric contents are emptied too fast. Produce a series of clinical symptoms. "(This is because the pyloric sphincter usually acts like a gatekeeper in the pylorus of the stomach, blocking large food molecules so that they can be torn and mixed into chyme in the stomach, making it easier for the small intestine to absorb. , and then let them enter the duodenum in an orderly manner) Dumping syndrome has two types: early stage and late stage. The subject's diarrhea symptoms should be an early complication. The pathological mechanism may be related to the rapid entry of hypertonic gastric contents into the intestine, causing intestinal endocrine cells to secrete a large amount of vasoactive substances. "Under normal circumstances, the food bolus and the digestive juice are fully mixed under the action of the stomach. The digestive juice is composed of multiple components, including gastric acid and a wide variety of digestive enzymes. One of its important functions is to dilute the food and make the gastrointestinal tract The osmotic pressure of the content is close to that of plasma, which facilitates the absorption of various substances.