顺行导管法经支气管镜测定气道内压的价值过去气过狭窄程度是通过呼吸摘记法、呼吸阻抗和气过阻力测定或影像学检查等获得的，但这些检查均为间接方法，不能区分出狭窄部位是在中枢气进抑或是在末梢气过．此外，也有人行逆行导管法，测定气过内压，尽管该法可直接测定气进... The value of airway pressure measured by bronchoscopy with antegrade catheter approach The past degree of stenosis was obtained by breath-taking, respiration, and aero-resistance or imaging studies, but these tests were indirect and did not distinguish between stenosis The site is in the central air intake or depression in the distal gas. In addition, some people retrograde catheter method, the determination of gas over the internal pressure, although the method can be directly measured gas ...