本文观察了14例患者在接受纤支镜检查过程中的血气变化,发现镜检时 PHO_2较镜检前有显著减少(P<0.05)。而 PH、P_(co)l_2、BE、H_(co_3)、SB、Sa_o_2等虽有改变,但无统计学意义(P>0.2),当镜检延续时,血气值的改变均无显著意义(P<0.1)。本文作者认为,纤支镜检查时所造成的低氧血症,可能与镜检时,整个气道反射性痉孪及粘膜充血水肿有关。纵使如此,作者认为纤支镜检查仍然是一种安全、有效、可接受的检查方法。 In this paper, we observed the changes of blood gases in 14 patients undergoing bronchoscopy, and found that the PHO_2 was significantly lower than that before microscopic examination (P <0.05). There were no significant differences in PH, P_ (co) l_2, BE, H_ (co_3), SB, Sa_o_2 and so on, but there was no significant difference between the two groups P <0.1). The authors believe that hypoxemia caused by fiberoptic bronchoscopy may be related to microscopic examination, the entire airway reflex spasm and mucosal congestion and edema. Even so, the authors believe that bronchoscopy is still a safe, effective and acceptable method of examination.