The early prognostic value of neutrophil/lymphocyte ratio combined with platelet/lymphocyte ratio detection for severe acute pancreatitis / 中华急诊医学杂志

ABSTRACT

Objective:To explore the early prediction value of neutrophil to lymphocyte ratio (NLR) combined with platelet to lymphocyte ratio (PLR) for severe acute pancreatitis (SAP).Methods:A total of 216 patients were collected in the Emergency Department of Peking University People's Hospital who met the diagnostic criteria of acute pancreatitis (AP) from January to December in 2019. Patients were assigned to 3 groups according to the severity of AP the mild acute pancreatitis group (MAP, n=86), moderately severe acute pancreatitis group (MSAP, n=40), and severe acute pancreatitis group (SAP, n=90). The peripheral blood was taken immediately. White blood cell count (WBC), neutrophil count (NEUT), lymphocyte count (LYM), hemoglobin (HGB), platelet count (PLT), total cholesterol (TC), triglyceride (TG), high-density lipoprotein (HDL), low density lipoprotein (LDL), serum creatinine (CR), and glucose (GLU) were detected. At the same time, CT imaging and other examinations were completed. NLR and PLR were calculated and compared among the three groups. The correlation between NLR, PLR, APACHE II score and Ranson score were compared. The receiver operating characteristic (ROC) curve was drawn to calculate the optimal thresholds of NLR and PLR. NLR-PLR was calculated according to the optimal thresholds of NLR and PLR, and the ROC curve was drawn to study the predictive value of NLR-PLR for SAP. Results:NLR [ OR=1.071, 95% CI (1.025, 1.120), P=0.002] and PLR [ OR=1.003, 95% CI (1.000, 1.244), P=0.044] were risk factors for SAP. NLR was positively correlated with Ranson score ( r=0.0342). NLR was positively correlated with APACHE II score ( r=0.0210). PLR was positively correlated with Ranson score ( r=0.0218, P=0.002). There was no correlation between PLR and APACHE II score ( P=0.157). The areas under the ROC curve (AUC) of NLR and PLR were 0.894 and 0.728. The optimal threshold, sensitivity and specificity of NLR were 6.105, 92.9% and 76.1%, and the optimal threshold, sensitivity and specificity of PLR were 154.358, 78.2% and 73.2%. The AUC of NLR-PLR (0.864) was the largest. Conclusions:NLR and PLR have predictive value for SAP patients within 48 h of the onset of AP. NLR-PLR combined detection have early predictive value for SAP within 48 h of onset.