Abstract：
BACKGROUND: To verify a test prototype of a novel flexible video laryngoscope in a difficult airway management simulator and to compare the efficacy of the flexible video laryngoscope with that of a conventional video laryngoscope.
METHODS: Fifteen clinical anesthesiologists performed endotracheal intubation with a flexible video laryngoscope and a conventional video laryngoscope in a difficult airway management simulator in the neutral position with intermediate and difficult mouth opening. The rate of intubation success, intubation time, and classification of glottic exposure were recorded. After endotracheal intubation, participants were asked to assess the difficulty of intubation of the two laryngoscopes.
RESULTS: The success rate of endotracheal intubation with flexible video laryngoscope was significantly higher than that with video laryngoscope in neutral positions with both intermediate (P = 0.025) and difficult (P = 0.005) mouth opening. The Cormack Lehane score of the flexible video laryngoscope was significantly lower than that of the video laryngoscope in the neutral position with intermediate mouth opening (P < 0.001) and difficult mouth opening (P < 0.001). There was no significant difference in intubation time in the neutral position with intermediate mouth opening (P = 0.460) or difficult mouth opening (P = 0.078). The difficulty score of endotracheal intubations with the flexible video laryngoscope was also significantly lower than that of the video laryngoscope in the neutral position with intermediate mouth opening (P = 0.001) and difficult mouth opening (P = 0.001).
CONCLUSIONS: Compared with conventional video laryngoscopy, flexible video laryngoscopy can provide superior glottic exposure and improve the success rate of intubation in a difficult airway management simulator.
METHODS: Fifteen clinical anesthesiologists performed endotracheal intubation with a flexible video laryngoscope and a conventional video laryngoscope in a difficult airway management simulator in the neutral position with intermediate and difficult mouth opening. The rate of intubation success, intubation time, and classification of glottic exposure were recorded. After endotracheal intubation, participants were asked to assess the difficulty of intubation of the two laryngoscopes.
RESULTS: The success rate of endotracheal intubation with flexible video laryngoscope was significantly higher than that with video laryngoscope in neutral positions with both intermediate (P = 0.025) and difficult (P = 0.005) mouth opening. The Cormack Lehane score of the flexible video laryngoscope was significantly lower than that of the video laryngoscope in the neutral position with intermediate mouth opening (P < 0.001) and difficult mouth opening (P < 0.001). There was no significant difference in intubation time in the neutral position with intermediate mouth opening (P = 0.460) or difficult mouth opening (P = 0.078). The difficulty score of endotracheal intubations with the flexible video laryngoscope was also significantly lower than that of the video laryngoscope in the neutral position with intermediate mouth opening (P = 0.001) and difficult mouth opening (P = 0.001).
CONCLUSIONS: Compared with conventional video laryngoscopy, flexible video laryngoscopy can provide superior glottic exposure and improve the success rate of intubation in a difficult airway management simulator.
摘要：
背景：为了在困难的气道管理模拟器中验证新型柔性视频喉镜的测试原型，并比较柔性视频喉镜与常规视频喉镜的功效。
方法：15名临床麻醉师在困难的气道管理模拟器中，在中间和难以张口的中立位置，使用柔性视频喉镜和常规视频喉镜进行气管内插管。插管成功率,插管时间,并记录声门暴露的分类。气管插管后，参与者被要求评估两个喉镜插管的难度.
结果：在中间（P=0.025）和困难（P=0.005）张口的中立位置，柔性视频喉镜气管插管的成功率明显高于视频喉镜。在中间张口（P<0.001）和张口困难（P<0.001）的中立位置，柔性视频喉镜的CormackLehane评分明显低于视频喉镜。中间张口(P=0.460)或张口困难(P=0.078)的中立位插管时间差异无统计学意义。在中间张口（P=0.001）和张口困难（P=0.001）的中立位置，柔性视频喉镜气管内插管的难度评分也明显低于视频喉镜。
结论：与常规视频喉镜检查相比，在困难的气道管理模拟器中，柔性视频喉镜可以提供优越的声门暴露并提高插管成功率。
方法：15名临床麻醉师在困难的气道管理模拟器中，在中间和难以张口的中立位置，使用柔性视频喉镜和常规视频喉镜进行气管内插管。插管成功率,插管时间,并记录声门暴露的分类。气管插管后，参与者被要求评估两个喉镜插管的难度.
结果：在中间（P=0.025）和困难（P=0.005）张口的中立位置，柔性视频喉镜气管插管的成功率明显高于视频喉镜。在中间张口（P<0.001）和张口困难（P<0.001）的中立位置，柔性视频喉镜的CormackLehane评分明显低于视频喉镜。中间张口(P=0.460)或张口困难(P=0.078)的中立位插管时间差异无统计学意义。在中间张口（P=0.001）和张口困难（P=0.001）的中立位置，柔性视频喉镜气管内插管的难度评分也明显低于视频喉镜。
结论：与常规视频喉镜检查相比，在困难的气道管理模拟器中，柔性视频喉镜可以提供优越的声门暴露并提高插管成功率。
