Geriatric Nutritional Risk Index, a predictive assessment tool, for postoperative complications after abdominal surgery: A prospective multicenter cohort study

Aim Patients awaiting abdominal surgery are often malnourished, which puts them at a high risk of postoperative complications. The aim of the present study was to investigate the effects of preoperative nutritional status using the Geriatric Nutritional Risk Index (GNRI) on postoperative complications and the course of recovery for patients undergoing abdominal surgery. Methods In this prospective multicenter cohort study, we enrolled patients awaiting abdominal surgery from November 2015 to December 2017. The characteristics of patients and postoperative complications were compared between participants (median age 71 years; interquartile range 66–78 years) with low GNRI (