中文摘要：

目的：观察不同角度内镜在支撑喉镜手术中对声带病变的显露情况及对比其对手术操作产生的影响。方法：随机选取声带良性病变患者50例,在全身麻醉支撑喉镜手术中,首先将支撑喉镜放置至声门,使用适当力量尽量显露声门区,将角度内镜连接电视显微系统,通过显示器观察声带病变。比较30°、45°、70°等角度内镜对声带病变的显露情况,并在角度内镜下行手术治疗。结果：50例患者的声带病变通过角度内镜均成功显露并顺利切除,仅2例患者出现轻度黏膜擦伤,未见其他并发症发生。结论：硬性内镜结合喉显微外科的方法既能解决声带病变显露问题又能有效减少手术并发症的发生。其中,45°内镜是最好的选择,既能良好地显露声带、前联合及声门下区病变,也便于手术操作。其次是30°内镜,虽然对声带前端及声门下显露尚达不到最理想状态,但因其临床使用广,一镜多用,可节约成本。

英文摘要：

Objective：To observe the exposure of the vocal lesions under endoscopes of different angles and to contrast the endoscopes′ influence on surgery.Method：Fifty patients with benign vocal lesions were selected randomly.During microlaryngoscopic surgery,the laryngoscope was placed softly and the different rigid endoscope（30°,45° or 70°）was connected to video system to expose the glottis and vocal folds.The operation was taken through looking at the color monitor.Result：The vocal fold lesions were completely examined and successfully excised in all patients,only two of them got soft palate mucosal abrasion.No one got complications.Conclusion：Rigid endoscopy associated with microlaryngeal surgery brings a better observation to the vocal lesions and a lower incidence rate of complicatons.It′s regarded that 45° rigid endoscope is better than the others,for it provides not only a good exposure to the vocal cords,anterior commissure and subglottis,but also convenience to operate.The second one is 30° rigid endoscope,which can save the cost,because of the widely using in many other departments.