JF - European Respiratory Journal JO - Eur Respir J SP - 813 LP - 816 VL - 7 IS - 4 AU - Hart, JD AU - Withers, RT AU - Tucker，RC Y1 - 1994/04/01 UR - //www.qdcxjkg.com/content/7/4/813.abstract N2 - P.K. Morgan Mark II通风计包括一个涡轮传感器和一个控制/读出单元，其中包含一个VENTX5A或VENTX6A程序。该设备用于在耗氧测试中测量微量通风。在连续和脉动流动中，检测了其中六个装置(一个VENTX5A带有两个涡轮，两个VENTX6As分别带有两个不同的涡轮)的精度和准确性;在校准过程中，注射器的注射速率会影响校准的准确性。参考标准是350升柯林斯链补偿气压表。在连续流量下，两个VENTX5A器件在60-160 l.min-1范围内的精度为99.5-100.5%，而四个ventx6a器件在60-200 l.min-1范围内的精度为99.3-102.1%。对于15-200 l.min-1的分钟体积，VENTX5A正弦流量的平均精度在96.1-101.3%之间;VENTX6As的可比数据为95.9-98.9%。这些平均精度提高到98.1-101.3%的VENTX5A测量分钟体积> 80 l.min-1. Omission of the two lowest tidal volumes (1 and 1.5 l) for the VENTX6As narrowed the range of accuracy to 96.9-98.5%. The coefficients of variation for five trials at each minute ventilation were 0-0.2%. We conclude that, while the P.K. Morgan Mark II Ventilometer has excellent precision, its accuracy is dependent on the calibration syringe rate, minute ventilation and program. ER -