Prognostic significance of postoperative glycemic variability after gastric surgery: a retrospective cohort study and development of a mortality prediction model

GV is a significant and independent predictor of postoperative mortality in gastric surgery patients. The observed threshold effects suggest that maintaining GV below critical levels may improve early outcomes. These findings highlight the prognostic value of GV and support its potential as a target for postoperative management. Further prospective, multicenter studies are warranted to validate these results and guide clinical practice.