Patients planned to undergoing laparoscopic gastrectomy, following the ERAS protocols.

Patents will be managed by our hospital's critical pathways.

1. Patient's preoperative counseling & education before surgery
2. No Bowel preparation
3. Oral Carbohydrate Solution (OCS) loading until 2hours before surgery
4. Fluid restriction & Management by pulse contour analysis or transesophageal doppler
5. Early mobilization
6. Early oral feeding (postoperative 1 day - sips of water, 2 days - semifluid diet (SFD), 3 days - soft blended diet (SBD))
7. Epidural patient controlled analgesics (no opioids analgesics)
8. Postoperative Nausea Active Control
9. Thromboembolism prophylaxis by low molecular weighted heparin (LMWH)
10. Perioperative High content Oxygen therapy
11. No drain insertion
12. No Levin tube
13. Patients will be discharged at POD#4 if there's no problem.

1. Tolerance of diet for 24 hours A. Able to eat one third of more of soft-blend meal without abdominal discomfort, bloating, nausea, or vomiting

2. Analgesic-free (oral or IV analgesic drugs not necessary after cessation of PCA)

3. Safe ambulation (ambulation of 600m without assistance)

4. Afebrile status without major complications (fever defined as body temperature greater than 37.5)

   • Above total 4 criteria should be satisfied for the evaluation of complete recovery.