ty -jour t1-可变孔口类型峰流量计的频率响应:需求和测试JF-欧洲呼吸期JO -eur Respir J SP -849 lp -855 vl -8 is -8 is -5 au -pedersen,au -rasmussen,trau -kjaergaard,sk au -miller,au -au -quanjer,ph y1-1995/05/01 ur -http://www.qdcxjkg.com/content/8/5/5/849.Abstract N2-鲜为人知。可变孔口峰流量计对高频流量输入的响应。这项研究的目的是定义和测试此类峰流量计的动态要求。在人群样本中,我们通过使用精心校准的fleisch测量了10-90%PEF的峰值呼气流(PEF),上升时间(TR),从10-90%的PEF和PEF的持续时间超过97.5%,95%和90%的PEF。气动扫描仪具有已知和足够的频率响应。用爆炸性解压缩校准器测试了三个峰流量计(迷你赖特,Vitalograph和Ferraris),分别调整为PEF和TR的值,分别为男性和女性的第95%和第5个百分位数,以及峰值持续时间,并分别为95%和第5个百分位数。在5到100毫秒以上。女性的PEF的第95个百分位数为597 L.min-1,男性为894 L.min-1。TR的第5个百分位值分别为55 ms和45 ms。 The duration of flow in excess of 95% PEF was longer than 10 ms in 99% of the subjects. For all meters, the deviation of PEF corrected for alinearity were less than 5% at a peak duration of 10 ms. We conclude that PEF, rise time, and peak duration can be used for description of dynamic properties of variable orifice meters, and that the tested meters had a satisfactory frequency response for recording PEF in mostly normal subjects. ER -