Nutritional Risk Screening Nutritional Support Gastrointestinal Cancer

"1. Before operation：Same as arm description.~2. After operation:Same as control group.~3. Out-of-hospital: Same as before operation.~4. Strengthening Health Education and psychological intervention:Dietitians need to strengthen health education and communicate with patients during the implementation of nutrition intervention.For patients who actively cooperate with treatment, dietitians can give encouragement.~5. Exercise Instruction:After the operation, according to the tolerance, the dietitian can instruct the patient to take a certain time walking every day, gradually increase the patient's muscle endurance and improve the body resistance."

Routine nutrition support in department.Nutritionists will give patients routine parenteral nutrition support via peripheral or central vein 0-48 hours after surgery and then start enteral nutrition support 48-72 hours after surgery.Patients were initially given half of their enteral nutrition and the rest was supplemented with parenteral nutrition.After adaptation, the patient stopped parenteral nutrition and all nutrition came from enteral nutrition.After the patient's gastrointestinal function gradually recovered, the enteral nutrition could gradually decrease.At this time, nutritionists can let the patient eat some light liquid food, but pay attention to eating a small amount of multiple times.After adaptation, patients can gradually transition from liquid diet to semi-liquid diet.We will educate patients and their families about diet and encourage them to eat more high-quality protein-rich foods.