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一般认为,气管内插管时间过长可引起声门下狭窄,而如果管径太大,即使时间不长也可引起环状软骨区的损伤,导致迟发性声门下狭窄为此,作者对130例成人标本作了研究,其中新鲜尸体122具;喉切除(肿瘤未侵及声门下区者)8例。男85例,女45例,平均年龄55岁在130个标本中,105个环状软骨是椭圆形,前后径大于横径;25个环状软骨为圆形或椭圆形,但横径大于前后径。男性标本环状软骨的平均前后径是
It is generally believed that intubated intubation for too long can cause subglottic stenosis, and if the diameter is too large, even if not long may also cause annular cartilage damage, leading to delayed subglottic stenosis To this end, the author of 130 adults Specimens were studied, of which 122 fresh cadaver; laryngectomy (tumor did not invade the subglottic area) in 8 cases. 85 males and 45 females, average age 55 years old in 130 specimens, 105 cricoid cartilage is oval, anteroposterior diameter greater than the transverse diameter; 25 annular cartilage is round or oval, but the diameter is greater than the anteroposterior diameter. The average anteroposterior diameter of male specimens of cricoid cartilage is