Randomized clinical trial on the efficacy and safety of perioperative management using ERAS protocol in gastric cancer

INTERVENTION: Shortened fasting period Early oral intake Omission of bowel preparation Oral prophylactic analgesic Conventional fasting period Conventional oral intake bowel preparation CONDITION: Gastric cancer PRIMARY OUTCOME: Postoperative lengths of stay SECONDARY OUTCOME: Postoperative complication rate; Readmission rate; Mortality rate; Weight loss rate INCLUSION CRITERIA: 1)Patients with radical surgery is scheduled. 2)ASA(American Society of Anesthesiology)class 1‐3. 3)T factor T1a‐T4a. 4)Weight loss rate the month prior to surgery is within 10%. 5)Written informed consent must be obtained from patients.