Abstract:Objective To explore the effect of endoscopic retrograde appendicitis therapy on inflammatory reaction, oxidative stress and immune level in patients with acute appendicitis.Methods 82 patients with acute appendicitis who were treated from January 2020 to September 2023, and divided into control group (41 cases) and treatment group (41 cases). The grouping method was random number table method. The control group was given laparoscopic appendectomy, and the treatment group was given endoscopic retrograde appendicitis therapy. Both groups observed that the patients were discharged from hospital and were followed up for 1 week. The operation-related indexes, levels of inflammatory factors [serum procalcitonin (PCT), soluble intercellular adhesion molecule-1 (sICAM-1), lipoxin A4 (LXA4), soluble P-selectin (sP-s) and C-reactive protein (CRP)], oxidative stress [serum superoxide dismutase (SOD) and malondialdehyde (MDA)] and immune function [immunoglobulin M (IgM) and immunoglobulin G (IgG)] before and 24 h after operation, score of pain before operation, 12 h and 24 h after operation and complications (during the study period) were compared between the two groups.Results Compared with the control group, the amount of bleeding in the treatment group was relatively less, and the time of lying on bed, hospitalization, anal exhaust and body temperature returning to normal after operation were relatively shorter, the differences were statistically significant (P < 0.05). Compared with pre-operation, the levels of serum sICAM-1, LXA4 and sP-s in both groups decreased at 24 h after operation, while the level of serum PCT and CRP increased, the treatment group was significantly lower than the control group (P < 0.05). Compared with pre-operation, the levels of serum SOD, IgM and IgG in the two groups decreased at 24 h after operation, but the levels in the treatment group were relatively higher, while the levels of serum MDA all increased, which was lower in the treatment group (P < 0.05). Compared before operation, the scores of pain in the two groups showed a downward trend from 12 and 24 h after operation, and compared with the control group, the scores of pain in the treatment group were relatively lower (P < 0.05). During the study period, compared with 26.83% in the control group, the total incidence of complications in the treatment group was 7.32%, which was relatively lower (P < 0.05).Conclusion Endoscopic retrograde appendicitis therapy for acute appendicitis can effectively reduce patients' oxidative stress and inflammatory reaction, protect their immune function, shorten patients’ postoperative recovery time, relieve their pain and reduce the incidence of postoperative complications.