Shigeoka J W, Gardner R M, Barkman H W
Chest. 1982 Nov;82(5):598-601. doi: 10.1378/chest.82.5.598.
Two samples of a manual 3 L calibrating syringe which displays an electronically calculated FEF25-75% were evaluated to determine its suitability as a flow calibrator were evaluated. Room air was discharged into a manual spirometer system known to be accurate. The calibrator-determined values correlated very closely with the spirometer values over an FEF25-75% range of 0.4 to 9 L/sec. The differences between calibrator and spirometer FEF25-75% values were small (mean +/- 1 percent, greatest 3.7 percent) and of little importance clinically. This portable, simple to operate calibrating syringe provides accurate FEF25-75% and volume values. By adding flow calibrating capability to a recommended standard volume calibrating syringe, it will facilitate the routine calibration of spirometers in the laboratory and in the field. Since it uses displaced air, it can be used at altitude and with flow measuring instruments without the correction required for calibrators using CO2 cartridges.
对两个手动3L校准注射器样本进行了评估，该注射器显示电子计算的FEF25 - 75%，以确定其作为流量校准器的适用性。将室内空气排放到已知准确的手动肺量计系统中。在校准器测定值与肺量计值之间，在0.4至9L/秒的FEF25 - 75%范围内相关性非常紧密。校准器与肺量计FEF25 - 75%值之间的差异很小（平均±1%，最大3.7%），在临床上意义不大。这种便携式、易于操作的校准注射器可提供准确的FEF25 - 75%和容积值。通过在推荐的标准容积校准注射器上增加流量校准功能，将便于在实验室和现场对肺量计进行常规校准。由于它使用排出的空气，因此可在高海拔地区使用，并可与流量测量仪器配合使用，而无需对使用二氧化碳气瓶的校准器进行校正。
