• Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, P. R. China;
YU Hai, Email: yuhaishan117@yahoo.com
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Objective To determine the predictive value of preoperative systemic immune-inflammatory index (SII) regarding the development of postoperative pulmonary complications (PPCs) after abdominal surgery.Methods Thisretrospective study involved 433 patients undergoing elective abdominal surgery. Logistic regression risk model was used to evaluate the prognostic value of SII. We drew the receiver-operating characteristic (ROC) curve and calculated the area under the ROC curve to compared the predictive ability of SII, platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR), and monocyte-to- lymphocyte ratio (MLR).Results The independent risk factors of PPCs were preoperative respiratory diseases, preoperative history of chronic liver disease, maintenance of intravenous or inhalation anesthesia, and intraoperative infusion of more colloid (P<0.05). However, SII, PLR, NLR, and MLR did not predict the occurrence of PPCs, and they also did not predict ≥3 grade of PPCs (AUC<0.60, P>0.05).Conclusions Preoperative SII is not a prognostic biomarker of PPCs occurrence in patients undergoing elective abdominal surgery. Other biomarkers, such as PLR, NLR, and MLR, also have no predictive value for the PPCs in these patients.

Citation: WANG Zaili, LI Xuefei, YU Hong, SUN Qirong, YU Hai. Effect of systemic immune-inflammatory index on postoperative pulmonary complications in patients undergoing abdominal surgery: a retrospective observational study. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2021, 28(5): 625-630. doi: 10.7507/1007-9424.202101061 Copy