研究单位:[1]First Affiliated Hospital, Sun Yat-Sen University[2]Parenteral & Enteral Centre, Peking Union Medical College Hospital[3]Guangzhou S Y S Medical School hospital[4]Wuhan TongJi Hospital[5]Beijing 301 hospital[6]Jie-Ping Wu Medical Foundation
The study is designed to investigate the influence of parenteral nutrition (PN) with low nitrogen and calorie supply on the clinical outcome of patients after an operation compared to that of traditional PNs.