METHODS: Airway stenting at the wave-speed, flow-limiting segment (choke point) is assessed by using a catheter, via the working channel of a stereoscopic bronchoscope, to measure the difference between lateral pressure and pleural pressure.
RESULTS: Based on the wave-speed concept of maximal expiratory flow limitation, stenting at the choke point increased the cross-sectional area and supported the weakened airway wall, thus improving expiratory flow limitation and relieving dyspnea.
CONCLUSIONS: To ensure correct stent positioning and thus optimal functional benefit, it is important to locate the exact position of tracheobronchial stenosis.
方法:波速气道支架置入术,流量限制段(阻塞点)通过使用导管进行评估,通过立体支气管镜的工作通道,测量侧卧压和胸膜压之间的差异。
结果:基于最大呼气流量限制的波速概念,在阻塞点的支架增加了横截面积并支撑了弱化的气道壁,从而改善呼气流量限制和缓解呼吸困难。
结论:为了确保正确的支架定位,从而确保最佳的功能效益,准确定位气管支气管狭窄的位置非常重要。