研究单位：[1]Jinling Hospital,Nanjing, Jiangsu, China, 210002[2]Peking Union Medical College Hospital[3]Chinese PLA General Hospital[4]First Affiliated Hospital, Sun Yat-Sen University[5]Xijing Hospital[6]West China Hospital[7]Xinqiao Hospital of Chongqing[8]Second Affiliated Hospital, School of Medicine, Zhejiang University[9]Changhai Hospital[10]Shanghai 10th People's Hospital[11]The Second Affiliated Hospital of Harbin Medical University[12]The Affiliated Hospital of Qingdao University[13]First Affiliated Hospital of Kunming Medical University
Patients will be randomized to Gradual or immediate Goal-dose EN group at day 3 after abdominal surgery. Patients will receive Goal-dose EN gradually or immediately after abdominal surgery. Both groups will receive EN for 5 days except 80% of target energy delivered by oral feeding or patients are discharged from hospital. The primary and secondary outcomes will be collected.
