观察在单侧甲状腺切除手术麻醉中学习和使用帝视内窥镜引导气管插管的效果，掌握帝视内窥镜下找寻声门的方法与手法。

85例ASAⅠ-Ⅱ级拟行单侧甲状腺切除的手术患者随机分别采用帝视内窥镜（D组，54例）和Macintosh直接喉镜（M组，31例）引导气管插管，统计一次插管成功率、插管时间及插管期间的循环波动。

首次学习和使用帝视内窥镜引导气管插管，一次成功率低于Macintosh直接喉镜组（48.1% vs 93.5%），插管时间明显延长[（58.9±37.8）s vs（28.5±11.2）s]（P<0.01），但循环波动差异无统计学意义。

帝视内窥镜有助于甲状腺手术患者困难气道的判断与处置，减少盲目插管可能引起的杓状软骨脱位和声嘶；初学者采用助手双手托下颌的方法可以有效拓展咽喉腔隙，声门显露和插管更简便。

To observe the effect of learning endotracheal intubation guided by Dispo-scope in the operation of unilateral thyroidectomy, and to master the skills of Disposcope.

Eighty-five patients with unilateral thyroid resection were randomly treated with using the Disposcope and Macintosh guided tracheal intubation. The successful rate of intubation, the time of intubation and the cy-clic fluctuation during intubation were performed.

The clear vision of trachea ring under glottis was a unique advantage of Disposcope. For the first time to study and using Disposcope guided intubation, the success rate was lower than that of Macintosh (48.1% vs 93.5%), the intubation time was significantly prolonged [(58.9±37.8) s vs (28.5±11.2) s] (P < 0.01), but there was no significant difference in cyclic fluc-tuations.

Disposcope is helpful for the treatment of patients with difficult airway in thyroid surgery, and reduce arytenoid dislocation and hoarseness caused by blind intubation. For beginners, both hands to lift the mandible by assistant can effectively expand the throat cavity, and easier to expose glottis for intubation.