Abstract:Objective To investigate the effect of laparoscopic resection on postoperative inflammatory response and pain factors for advanced gastric cancer.Methods 82 patients with advanced gastric cancer from March 2019 to March 2021 were selected divided into observation group (n = 41) and control group (n = 41) according to random number table method. Patients in the control group underwent open radical gastric cancer surgery, and patients in the observation group underwent laparoscopic radical gastric cancer surgery. The changes in surgical indicators and postoperative complications were compared between the two groups; Serum inflammatory factors [ tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and C-reactive protein (CRP) ] and pain factors [ norepinephrine (NE), substance P (SP) and 5-hydroxytryptamine (5-HT) ] changes of before operation, 3 and 7 d after operation.Results The operative time in observation group was longer than that in control group, while anal exhaust time, ambulation time and hospitalization time of the observation group were shorter than those of the control group, and the intraoperative blood loss was less than that of the control group (P < 0.05). The postoperative complications rate of observation group was lower than that in control group (P < 0.05). The serum TNF-α, IL-6 and CRP levels after postoperative 3 d and 7 d in two groups were higher than those before the operation (P < 0.05); The serum TNF-α, IL-6 and CRP levels in observation group were lower than those in control group (P < 0.05). The serum NE, SP and 5-HT levels after postoperative 3 d and 7 d in two groups were higher than those before the operation (P < 0.05); The serum NE, SP and 5-HT levels in observation group were lower than those of control group (P < 0.05).Conclusion Laparoscopic radical resection of gastric cancer for advanced gastric cancer has lower incidence of postoperative complications and little influence on inflammatory reactions and pain factors, which is worthy of clinical application.