Abstract: Objective To explore the application of Aintree Intubation Catheter (AIC) innovative combination video laryngoscope and light endoscope in guiding airway exchange. Methods From January 2020 to January 2022, 80 patients with difficult airway intubation admitted to the Xiangcheng Hospital of Traditional Chinese Medicine, Suzhou were selected as the research objects. According to the random number table method, they were divided into the control group and the study group, with 40 cases in each group. Patients with the control group patients receiving optical fiber endoscope intubation, the team accept AIC innovation video laryngoscope intubation, under the comparison of two groups of patients with total success rate, a success rate of intubation, the intubation time, as well as the induced (T0) before and after induction (T1), endotracheal intubation (T2), immediately after 2 min (T3) intubation hemodynamic index, the complication rate of intubation. Results There was no significant difference in the total success rate of intubation and the success rate of one intubation between the two groups (P>0.05). The intubation time of the study group was lower than that of the control group, and the difference was statistically significant (P<0.05). At T0 and T1, there was no significant difference in systolic blood pressure, diastolic blood pressure and heart rate between the two groups (P>0.05). At T2 and T3, heart rate of the study group was lower than that of the control group, and the difference was statistically significant (P<0.05). The incidence of complications in the study group was significantly lower than that in the control group, and the difference was statistically significant (P<0.05). Conclusion Using AIC innovative combination video laryngoscope in difficult airway can significantly improve the success rate of one intubation, shorten the intubation operation time, and reduce the stimulation of intubation to patients, which has positive significance for stabilizing the hemodynamic indexes of patients. Moreover, the safety of AIC innovative combination video laryngoscope is worthy of recognition, and the incidence of adverse reaction of intubation is low, so it is recommended to be popularized and applied clinically,worthy of clinical application.

Key words: AIC innovative combination video laryngoscope, fiberoptic endoscope, difficult airway intubation, clinical value