JF - European Respiratory Journal JO - Eur Respir J SP - 813 LP - 816 VL - 7 IS - 4 AU - Hart, JD AU - Withers, RT AU - Tucker, JF - European Respiratory Journal JO - Eur RespirRC Y1 - 1994/04/01 UR - //www.qdcxjkg.com/content/7/4/813.abstract N2 - P.K.摩根马克II通气计包括一个涡轮换能器和一个控制/读出单元，其中包含一个VENTX5A或VENTX6A程序。该设备用于在耗氧试验中测量微小通风。其中六个装置(一个VENTX5A带两个涡轮，两个VENTX6As各带两个不同的涡轮)在连续和脉动流中检测了其精度和准确度;在校准过程中，注射器速率影响了准确度。参考标准是350升柯林斯链式补偿气表。在连续流动，两个VENTX5A设备显示精度99.5-100.5%的范围60-160 l.min-1，而四个VENTX6As是99.3-102.1%的范围60-200 l.min-1。对于15-200 l.min-1的分钟体积，VENTX5A的正弦流量的平均精度在96.1-101.3%之间;ventx6a的可比数据为95.9-98.9%。在测量分钟体积>时，VENTX5A的平均精度提高到98.1-101.3%; 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 -