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Correlation Analysis of Pleural Effusion and Lung Infection After Liver Transplantation by Chuanshen Xu, Weina Zhang, Xin Wang, Zhiqiang Li, Ge Guan, Shuxian Wang, Ning Fan, Yuan Guo, Wei Rao, Jianhong Wang, Taohua Zheng, Yunjin Zang

Background: The aim was to probe the association of pleural effusion with lung infection in patients with liver transplantation and to provide a theoretical foundation for preventing, diagnosing, and remedying pulmonary complications after liver transplantation.
Methods: Our team harvested clinical data of patients undergoing orthotopic allogeneic liver transplantation complicated with pleural effusion after surgery in our institution from May 2018 to July 2019. Based on whether puncture drainage was needed, patients were allocated to either control group or observation group. The differences in pleural effusion depth, lung function, lung infection, serum inflammatory factor levels and 6-month survival before and after surgery were compared. Finally, ROC curves were constructed for dissecting the correlation of pleural effusion with lung infection.
Results: On day 3 after surgery, (1) pleural effusion depth of the observation group was 5.70 ± 1.20 cm, which was saliently greater than that of control group (p < 0.05); (2) in comparison to control group, lung function indexes FVC, FEV1.0, MVV, and PaO2 of observation group declined (all p < 0.05); (3) sputum culture evinced that the lung infection rates of the control group and observation group were 17.24% and 71.70%, respectively, and the observation group harbored brilliantly higher infection rate (p < 0.05); (4) in comparison to the control group, IL-6, IL-8, and TNF-α in observation group were increased (p < 0.05); (5) AUC of pleural effusion depth and lung infection was 0.849, 0.805, and 0.853, respectively on days 1, 2, and 3 after surgery.
Conclusions: A positive correlation existed between pleural effusion and lung infection after liver transplantation. When patients have persistent pleural effusion, the incidence of lung infection should be prevented and reduced.

DOI: 10.7754/Clin.Lab.2020.201037