Abstract:Objective To observe the changes of VEGF, NO and TNF-α in patients with early glottic cancer treated by CO2 laser combined with plasma radiofrequency ablation (PRA) and curative effect. Methods A total of 298 patients with early glottic cancer were selected as the subjects, which was divided into observation group (149 cases) and control group (149 cases) randomly. The control group were treated by laryngofissure, while the observation group were treated by CO2 laser combined with PRA. The serum levels of VEGF and TNF-α were measured by ELISA method, and NO was tested by nitrate reductase assay. The two groups were collected postoperative recovery and complications one year after surgeries. Results The difference was not statistically significant in preoperative levels of VEGF, NO and TNF-α between the two groups (P > 0.05). The difference was statistically significant in postoperative levels of VEGF, NO and TNF-α between the two groups (P < 0.05). The operation time and hospitalization time in observation group were shorter than those in control group (P < 0.05), and mucosa recovery in observation group was better than that in control group, and incidence of complication in observation group (6.04%) were lower than that in control group (16.78%) (P < 0.05). Conclusions Patients with early glottic cancer treated by CO2 laser combined with PRA can reduce surgical trauma, improve prognosis and effectively reduce serum levels of VEGF, NO and TNF-α.