This is an observational, cross-sectional study to be conducted on the Nutrition Insights Day (NID), with retrospective review of patient medical charts. No prospective follow-up period is considered.

This study aims to obtain a contemporary overview of the nutritional status, the use of EN and/or PN and the provision of calories and proteins in patients after major elective gastrointestinal surgery with existing malnutrition or at risk of hospital malnutrition in selected Asian countries.

Inclusion Criteria:

1. Adult patients after elective major abdominal gastrointestinal surgery [i.e. elective major GI resections, partial or total, especially for cancer, including: esophagectomy, gastrectomy, enterectomy (small bowel resection), colectomy, hepatectomy, pancreatectomy, resections for gall bladder or bile duct cancer (cholangiocarcinoma)] with pre-existing malnutrition or who are at significant risk for malnutrition or nutrition-related complications*, with indications for nutritional support
2. Hospitalization on SICU or major surgical ward on the NID
3. Use of EN (nutritional intake provided via tube feeding) and/or PN for at least one day before the NID
4. If patient received oral nutrition (ON) or oral nutrition supplements (ONS) during the observational phase from day -5 to day -2, complete and reliable data of daily caloric and protein intake is available
5. Latest surgical intervention ≤ 10 days before NID

Exclusion Criteria:

1. Patients with burn injuries
2. Patients requiring postsurgical mechanical ventilation and sedation on the NID
3. Patients receiving ON and/or ONS at any quantity on the day before the NID
4. Patients requiring emergency procedures

Adult patients after elective major abdominal gastrointestinal surgery with pre-existing malnutrition or who are at significant risk for malnutrition or nutrition-related complications, with indications for nutritional support