Abstract:Objective To investigate the effect of lidocaine aerosol inhalation combined with propofol in children with fiberoptic bronchoscopy.Methods 80 children with bronchofibroscopy were randomly divided into control group and study group. The control group was given propofol intravenous anesthesia, and the study group was given lidocaine nebulization inhalation combined with propofol intravenous anesthesia. Compare the basic conditions of children's fiberoptic bronchoscopy in the two groups (including time, success rate of one examination and cough), sedation satisfaction rate, hemodynamic indexes before fiberoptic bronchoscopy (T1), immediately after examination (T2), 1 min after examination (T3), 5 min after the beginning of the examination (T4) and immediately after the end of the examination (T5) [including heart rate (HR), mean arterial pressure (MAP) and percutaneous arterial oxygen saturation (SpO2)], and the incidence of adverse reactions.Results The examination time in the study group was shorter than that in the control group [(15.14 ± 2.03) and (18.26 ± 2.65) min] (P < 0.05), and the cough score was lower than that in the control group [(2.13 ± 0.33) and (2.86 ± 0.47)] (P < 0.05); There was no significant difference between the two groups in the success rate of the first examination (P > 0.05); The satisfaction rate of sedation in the study group was 97.50%, which was significantly higher than that in the control group (80.00%) (P < 0.05); There were significant differences in HR and MAP in terms of inter-group, time and interaction effects between the two groups (P < 0.05); HR and MAP were higher than T1 at T2, T3, T4 and T5, and lower than T2 and T3 at T4 and T5 in the two groups (P < 0.05). HR at time points T1, T2, T3, T4 and T5 in the study group was slower than that in the control group, and MAP was lower than that in the control group (P < 0.05); There was no significant difference in SpO2 in terms of inter-group, time and interaction effects between the two groups (P > 0.05); There was no significant difference in the incidence of adverse reactions between the two groups (P > 0.05).Conclusion Lidocaine aerosol inhalation combined with propofol can shorten the examination time, reduce the degree of cough, improve the satisfaction rate of sedation, and maintain stable hemodynamics in children's fiberoptic bronchoscopy, which is worthy of clinical application.