纤维光学支气管镜已广泛用于支气管和肺部疾患的诊断,虽现有资料表明其致病率与死亡率甚低,但若缺乏警惕、观察不周时,确实存在某些危险性。本镜器不似硬质镜那样为一开放性管器,在主气道中似一占位性损害,对有阻塞性气道疾患者与正常人均可减弱其呼吸功能。动脉血氧分压(PaO_2)下降,但通常变化不大且子镜器撤除后迅速恢复。如因施术者缺乏经验而致检查时间延长,对有严重气道阻塞者 Fiber optic bronchoscopy has been widely used in the diagnosis of bronchial and pulmonary disorders. Although available data indicate a low prevalence and mortality rate, some risks do exist if there is a lack of vigilance or poor observation. The mirror does not like a hard mirror as an open tube, like a occupying the main airway damage, for patients with obstructive airway disease and normal people can reduce their respiratory function. Arterial oxygen partial pressure (PaO_2) decreased, but usually little changed and the rapid recovery after the removal of the sub-mirror. As a result of the inexperienced practitioner due to prolonged examination, there are severe airway obstruction