关键词: 困难气道, UE可视喉镜, 七氟烷, 吸入诱导

Abstract: Objective To investigate the clinical effect of sevoflurane inhalation induction and UE glidescope under spontaneous breathing in patients with anticipated difficult airway. Methods Fifty ASA Ⅰ-Ⅲ patients with difficult airway scheduled for tracheal intubation anesthesia were selected. All patients were induced with inhalation of 8% sevoflrane and oxygen 6 litre min^-1 under spontaneous breathing via face masks, and then intubated by UE glidescope. The mean arteriablood pressure （MAP）, heart rate （HR） and O₂ saturation （SpO₂） were recorded at the time points of T₁ （before anesthesia）, T₂ （before intubation） and T3 （after intubation）. The intubation times, the first-attempt success rate of intubation and the related adverse events were recorded. Results During the whole procedure of induction and intubation, SpO₂ was more than 96% in all patients. Fourty-three cases （86%） were intubated successfully at first attempt, 4 cases with re-intubated, no case with respiratory suppression, laryngospasm, and bucking, 2 cases with mild teeth bleeding. No significant difference in HR, MAP and SpO₂ at three time points. Conclusion sApplication of sevoflurane inhalation induction combined with UE glidescope intubationin patients with difficult airway not only provides high rate of successful intubation, but also has relative stable hemodynamics and low occurrence rate of adverse events, therefore, which is a safe and feasible induction scheme.

Key words: inhalation induction, UE glidescope, sevoflurane, difficult airway