To investigate the application value of nasal high-flow humidifying oxygen therapy combined with far-infrared cough patch in the treatment of chronic bronchitis. Method 104 patients with chronic bronchitis with infection treated in Lanzhou Hospital of Integrated Traditional and Western Medicine from June 2021 to June 2024 were selected and divided into observation group and control group according to different treatment methods, with 52 cases in each group. The control group was treated with nasal high-flow humidifying oxygen therapy, and the observation group was treated with far-infrared pediatric cough patch on the basis of the control group. Before treatment and 1 week after treatment, the sputum properties, blood gas index, symptom improvement time, tracheal intubation rate, hospital stay, lung function, immune index level, and pulmonary pathological changes were compared between the two groups.

After treatment, the distribution of sputum properties in the observation group was better than that in the control group, the difference was statistically significant (P<0.05). The improvement time of cough, sputum, wheezing and hospitalization in the observation group were shorter than those in the control group, and the tracheal intubation rate was lower than that in the control group, with statistical significance (P<0.05). After treatment, the levels of FVC, FEV1, FEV1/FVC and MVV in observation group were higher than those in control group, and the differences were statistically significant (P<0.05). After treatment, the levels of TNF-α, CD8+ and CRP in observation group were lower than those in control group, and CD4+ were higher than those in control group, with statistical significance (P<0.05).

The combination of nasal high flow humidified oxygen therapy and far-infrared pediatric cough suppressant patch can effectively improve the sputum properties of children with chronic bronchitis, rapidly alleviate clinical symptoms, reduce the risk of tracheal intubation, shorten hospitalization time, and improve lung function and immune levels.