Predictive value of systemic immune-inflammatory index for complicating venous thrombo embolism in patients with lung cancer
Objective To investigate the predictive value of systemic immune-inflammation index (SII) for venous thrombo embolism (VTE) in patients with lung cancer.Methods The patients with lung cancer admitted and treated in Chengdu Municipal Second People's Hospital from March 2022 to October 2023 were selected as the study subjects and divided into the VTE group (n=33) and the non-VTE group (n=37) ac-cording to whether or not complicating VTE.The clinical characteristics and laboratory indexes were collect-ed.The multivariate logistic regress was used to analyze the influencing factors.The receiver operating charac-teristic (ROC) curve was drawn.The difference of the areas under curve (AUC) was compared.The Kaplan-Meier survival curve was used to evaluate the risk stratification capability of the related variables for VTE oc-currence in the patients with lung cancer.Results There were statistically significant differences in WBC,neutrophil,lymphocyte,albumin (ALB),D-dimer (D-D),plasma viscosity,neutrophil-to-lymphocyte ratio (NLR),platelet-to-lymphocyte ratio (PLR) and SII between the two groups (P<0.05).The multivariate lo-gistic regression analysis showed that high SII,tumor stage (Ⅲ-Ⅳ stage) and plasma viscosity were inde-pendent risk factors for VTE occurrence in the patients with lung cancer (P<0.05).The ROC curve analysis showed that AUC of the Khorana score,SII,modified Khorana score,NLR and PLR were 0.747,0.776,0.866,0.754 and 0.672,respectively.The predictive efficiency of SII for VTE occurrence in the patients with lung cancer was better than that of Khorana score,NLR and PLR.Conclusion High SII is an independent risk factor for VTE occurrence in the patients with lung cancer,its risk stratification for VTE occurrence in the pa-tients with lung cancer is conducive to early recognize the high risk population.