Abstract:Objective To investigate the effectiveness of budesonide inhalation therapy combined with omalizumab injection in children with moderate to severe bronchial asthma.Methods A total of 98 children with moderate to severe bronchial asthma admitted to Handan Maternal and Child Health Hospital from January 2020 to January 2024 were selected for this study. They were randomly divided into a control group and an observation group, with 49 cases in each group. The control group received budesonide suspension inhalation therapy, while the observation group received budesonide combined with omalizumab treatment for 4 months. The time to resolution of clinical symptoms (cough, wheezing, shortness of breath, lung wet rales) was compared between the two groups. Additionally, serum inflammatory factor levels [eosinophil count (EOS), high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6)] and pulmonary function [forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), peak expiratory flow (PEF)] before and after treatment were compared. The immune function [immunoglobulin (Ig) G, IgA, IgE], asthma control scores, and asthma quality of life scores were assessed before treatment and at 1 month, 2 months, and 4 months after treatment. Adverse reactions (nausea, vomiting, drowsiness, lower limb edema, rash) were recorded.Results The time for the resolution of cough, wheezing, shortness of breath, and lung wet rales was significantly shorter in the observation group compared to the control group (P <0.05). The changes in EOS, hs-CRP, IL-6, FVC, FEV1, and PEF in the observation group before and after treatment were greater than those in the control group (P < 0.05). Comparison of IgG, IgA, and IgE levels before treatment, and at 1 month, 2 months, and 4 months after treatment between the observation and control groups showed: (1) statistically significant differences at different time points for IgG, IgA, and IgE (P <0.05). (2) significant differences between the observation and control groups for IgG, IgA, and IgE (P <0.05). (3) The trends of changes in IgG, IgA, and IgE showed significant differences between the groups (P <0.05). The comparison of asthma control scores and quality of life scores before treatment, and at 1 month, 2 months, and 4 months after treatment between the observation and control groups indicated: (1) significant differences at different time points for asthma control scores and quality of life scores (P <0.05). (2) significant differences between the observation and control groups (P <0.05). (3) The trends of changes in asthma control scores and quality of life scores also showed significant differences (P <0.05). The overall incidence of adverse reactions did not differ significantly between the two groups (P >0.05).Conclusion Budesonide combined with omalizumab significantly improves the treatment outcomes in children with moderate to severe bronchial asthma without increasing the risk of adverse reactions.