Zhongguo quanke yixue (Apr 2022)
Correlation between Neutrophil to Lymphocyte Ratio, Platelet to Lymphocyte Ratio and Severity of Biliary Acute Pancreatitis and Concurrent Liver Injury
Abstract
Background Neutrophil to lymphocyte ratio (NLR) and platelet to lymphocyte ratio (PLR) have proved to have a certain significance in predicting the severity of pancreatitis, however, at present, there are few relevant studies on the diagnostic and predictive value of NLR and PLR for liver injury in biliary acute pancreatitis (BAP) . Objective To explore the correlation between NLR and PLR in the severity of BAP and the concurrent acute liver injury (ALI) . Methods A total of 142 patients with BAP admitted to Emergency Department of the Second Affiliated Hospital of Nanchang University from March 2019 to March 2021 were selected and divided into mild (MAP) /moderately (MSAP) group (n=98) and severe (SAP) group (n=44) according to Atlanta classification. According to whether the liver function is damaged or not, they were divided into ALI group (n=92) and non-ALI group (n=50) . The ALI group was further divided into hepatocyte type liver injury subgroup (n=1) , bile duct type liver injury subgroup (n=16) and mixed type liver injury subgroup (n=75) . The general condition and clinical data of patients were collected, and the predictive value of NLR and PLR on the severity of BAP and concurrent ALI was explored by the ROC curve and binary Logistic regression analysis. Results The NLR and PLR in MAP/MSAP group were lower than those in SAP group (P<0.05) . The NLR and PLR in ALI group were higher than those in non-ALI group (P<0.05) . There was no significant difference in NLR and PLR between bile duct type liver injury subgroup and mixed type liver injury subgroup (P>0.05) . The area under the ROC curve of NLR, PLR and their joint prediction of SAP was 0.809, 0.667, 0.809, respectively. The area under the ROC curve of NLR, PLR and their joint prediction of ALI in BAP was 0.774, 0.767, 0.806, respectively. The area under the ROC curve of NLR, PLR and their joint prediction of the occurrence of cholangiocytic liver injury in BAP was 0.813, 0.742, 0.861, respectively. The area under ROC curve of NLR, PLR and their joint prediction of mixed liver injury in BAP was 0.763, 0.770 and 0.794 respectively. The results of binary Logistic regression analysis showed that elevated NLR was a risk factor for SAP〔OR=1.184, 95%CI (1.102, 1.271) , P<0.001〕. Elevated NLR and PLR were the risk factors for ALI in BAP〔OR=1.140, 95%CI (1.050, 1.238) , P=0.002; OR=1.007, 95%CI (1.001, 1.013) , P=0.023〕; elevated NLR was a risk factor for bile duct cell liver injury in BAP〔OR=1.184, 95%CI (1.054, 1.331) , P=0.004〕. Elevated NLR and PLR were risk factors for mixed liver injury in BAP〔OR=1.120, 95%CI (1.120, 1.221) , P=0.011; OR=1.007, 95%CI (1.001, 1.013) , P=0.034〕. Conclusion Elevated NLR is a risk factor for SAP, elevated NLR and PLR are the risk factors for ALI in BAP. The predictive value of NLR on the severity of BAP and concurrent ALI is better than PLR, and the combined detection effect is better.
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