患者男 ,40岁 ,体重 6 6ｋｇ。因呼吸困难 3年 ,加重半年而入院。经纤支镜及ＣＴ等检查 ,确诊为气管内肿瘤 ,使管腔大半阻塞 ,同时胸骨后甲状腺肿压迫气管加重阻塞。针对上述情况 ,决定先在局麻下双股静脉及右股动脉插管 ,行心肺转流。开始前 ,先静注安定 10ｍｇ及硫喷妥钠 2 0 Male patient, 40 years old, weighing 6 6kg. Due to breathing difficulties for 3 years, increased six months and admitted to hospital. Bronchoscopy and CT examination, diagnosed as endotracheal intubation, most of the lumen obstruction, and supratentorial goiter pressure trachea increased obstruction. In view of the above situation, decided to first under local anesthesia double femoral vein and right femoral artery catheterization, cardiopulmonary bypass. Before starting, the first intravenous stability of 10mg and thiopental 20