Abstract:Objective To analyze the effect of continuous renal replacement therapy (CRRT) on the levels of procalcitonin (PCT), interleukin (IL)-17, IL-6 and high mobility group protein B1 (HMGB1) in patients with severe acute pancreatitis (SAP) and to determine its clinical significance.Methods A total of 182 patients with SAP treated in our hospital from October 2018 to October 2020 were analyzed retrospectively. They were divided into the control group and the observation group, with 91 cases in each group. The control group was treated with the routine therapy, and the observation group was additionally treated with CRRT on the basis of the routine therapy. The curative effects of the two groups and the changes of PCT, IL-17, IL-6 and HMGB1 levels in the two groups before and 72 hours after the treatment were compared. The clinical outcomes of all patients were recorded, and the levels of PCT, IL-17, IL-6 and HMGB1 were compared between the survival group (n = 148) and the death group (n = 34). The values of PCT, IL-17, IL-6, HMGB1 and their combination in predicting the SAP death were analyzed.Results After the treatment, the overall effective rate of the observation group was higher than that of the control group (P < 0.05). The decreases in the levels of PCT, IL-17, IL-6 and HMGB1 at 72 hours after the treatment were greater in the observation group than those in the control group (P < 0.05). The levels of PCT, IL-17, IL-6 and HMGB1 in the survival group were lower than those in the death group (P < 0.05). The sensitivity of serum HMGB1 alone was the highest, which was 97.06% (95% CI: 84.7%, 99.9%), successively higher than that of the combined detection, IL-6, PCT, and IL-17 alone. The specificity of the combined detection was the highest, which was 92.57% (95% CI: 87.1%, 96.2%), successively higher than that of PCT, IL-6, IL-17, and HMGB1 alone. The area under the receiver operating characteristic (AUC) of the combined detection was the highest, which was 0.983 (95% CI: 0.952, 0.996), successively higher than that of HMGB1, IL-6, PCT, and IL-17 alone (P < 0.05).Conclusions CRRT can significantly regulate the levels of inflammation-associated factors and is effective in the treatment of SAP. The combined detection of serum PCT, IL-17, IL-6 and HMGB1 can be established as a valuable marker to predict the conditions and the poor prognosis of SAP patients.