A phase III study on the anti-SSI effects of preoperative immunonutrient for patients who undergo total gastrectomy for gastric cancer

INTERVENTION: Group A: Inpact + free food intake Inpact 1000ml/day during preoperative 5 days and free food intake remorize about Inpact intake and administration of antibiotics Group B: Free food intake without any administration of Inpact memorize the administration of antibiotics CONDITION: Patients who undergo total gastrectomy for gastric cancer PRIMARY OUTCOME: primary endpoint; incidence of SSI; secondary endpoints; incidence of infection; postoperative CRP; postoperative complications INCLUSION CRITERIA: 1. gastric cancer confirmed by endoscopy and histology 2. required the total gastrectomy 3. with a scheduled day for surgical operation 4. patient who can take the immunonutrient for preoperative 5 days 5. without severe weight loss (within ‐10%) 6. with sufficient function on the liver, kidney and bone marrow 7. age 20<= and 80>= 8. written informed consent