The Impact of Triglyceride-Glucose Index Levels During Perioperative Period on Outcomes in Femoral Neck Fracture Patients

Abstract

Introduction The objective of the present study is to assess the impact of the triglyceride-glucose index (TyG index) on the prognosis and explore the correlation between the TyG index and all-cause mortality in femoral neck fracture patients. Materials and Methods In this retrospective cohort study, we analyzed the TyG index in the follow-up of femoral neck fracture patients who underwent partial hip prosthesis. The formula of ln [fasting triglycerides (mg/dL) x fasting blood glucose concentration (mg/dL)/2] was used in the calculation of the TyG index. The patients were separated into three categories based on the TyG index. Results It was found that there was a significant correlation between prolonged hospital stay and elevated admission and postoperative TyG index ( P = 0.011, P < 0.001, respectively). The Kaplan-Meier survival analysis curves revealed a higher risk of 30-day, 90-day and overall mortality in patients with higher postoperative TyG index levels, categorized by postoperative TyG tertiles (log-rank P < 0.001, P < 0.001 and P = 0.001, respectively). In the multivariate Cox proportional hazard models, higher postoperative TyG index was a significant risk factor for mortality ( P = 0.01). The receiver operating characteristic analysis indicated that a postoperative TyG index of 9.01 and above was critical for 30-day mortality (69% sensitivity, 82% specificity and 0.78 area under curve; P < 0.001). Conclusions In our study demonstrate that the TyG index may be useful in identifying individuals at high risk of mortality in patients with femoral neck fractures.