文摘
在气流梗阻患者,可以用不同的方法建立流量限制。使用身体体积描记法、流量限制是假定当呼气流量增加而肺泡压力减少在同一时间。在迫使过期,流可以通过建立限制流断续器技术;流量限制是假定时,释放一个阻塞后,峰值流量叠加在持续肺泡流(δ最大流量)检测。在这项研究中,流断续器技术应用于检测流量限制在潮汐呼吸。获得的结果相比人体体积描记仪。post-interruption呼气流量模式,分析了在33个科目;11气流梗阻患者和流量限制建立与身体体积描记器(AO +);11气流梗阻患者无流量限制(AO);和11个健康志愿者。 Mean spike areas were 27.6 +/- 18.3, 4.6 +/- 2.3 and 3.4 +/- 2.0 mL for the AO+, AO- and control group, respectively, showing a highly significant difference between the AO+ patients and the other groups. Also, significantly higher delta peak flows were found in the AO+ patients compared to the other groups. No differences in delta peak flows or spike areas could be established between patients without flow limitation and controls. We conclude that the interruptor technique may be a useful means of assessing flow limitation during tidal breathing.