关键词: 套囊预充气, 纤维支气管镜引导经鼻插管, 困难气道

Abstract: Objective: To investigate the influences of endotracheal catheter cuff pre-inflation on degree of difficulty of fiberoptic bronchoscopy guide nasal intubation. Methods: 60 difficult airway patients were randomly divided into A group and B group with 30 patients in each group. In A group, the cuff was pre-inflated after the endotracheal catheter reached pharyngeal cavity through nasal cavity; the patients in B group were treated with traditional fiberoptic bronchoscopy guide nasal intubation. The success rate of intubation, operation time, intubation time, incidence of catheter difficulty and intubation related complications, as well as mean arterial pressure (MAP) and heart rate (HR) at different time point during intubation of patients in 2 groups were compared. Results: The success rate of intubation of A group was obviously higher than B group (P<0.05); the operation time, intubation time, incidence of catheter difficulty,incidence of sore throat and pharyngeal discomfort after operation were obviously lower than B group (P<0.05). There was no significant difference in MAP and HR between 2 groups at different time point during intubation (P>0.05). Conclusions: Endotracheal catheter cuff pre-inflation makes fiberoptic bronchoscopy guide nasal intubation easy to operate and can reduce incidence of complications, so it is worthy of application in clinic.

Key words: Cuff pre-inflation, Fiberoptic bronchoscopy guide nasal intubation, Difficult airway