Effects of Nutritional Support on Postoperative Delirium

The entire process is carried out according to Severance Hospital surgical protocols.

The entire process is carried out according to Severance Hospital surgical protocols. The patients of control group will receive education from the research team about the importance of nutrition and exercise before and after surgery. In addition, the patients of control group will be instructed to take up to 4 doses of the nutritional supplement (Nucare Curact provided by DAESANG Wellife Inc.) per day for approximately 2 weeks before surgery and for about 4 weeks after surgery.