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首页> 外文会议>International Federation for Medical and Biological Engineering European Conference >Ability to Determine Dynamic Respiratory Parameters Evaluated during Forced Vital Capacity Maneuver Using Impedance Pneumography
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Ability to Determine Dynamic Respiratory Parameters Evaluated during Forced Vital Capacity Maneuver Using Impedance Pneumography

机译：使用阻抗肺扫描在强制浮能管道中测定动态呼吸参数的能力

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摘要

Flow-volume loops are used to calculate dynamic respiratory parameters. We examined whether our newly developed impedance pneumograph is able to measure properly respiratory parameters during Forced Vital Capacity (FVC) maneuver. Impedance measurements were performed using an electrode configuration known for providing good linearity between impedance pneumography (IP) and pneumo-tachometry (PNT) signals. The tests were performed on a group of 14 young volunteers (11 male and 3 female) without symptoms of respiratory dysfunctions. The volume-related signal from impedance pneumography and airflow signal from the reference method, pneumotachometry, were recorded. The IP signal was converted into volume units using a transfer function determined during calibration, and flow-volume loops for IP and PNT were obtained. Their shapes were compared using modified Mahalanobis distance metrics. Additionally, we compared the ratio of time of peak expiratory flow (PEF) to total expiratory time (T_(TPEF)/T_E) and that of volume at PEF to maximal volume (V_(TPEF)/V_E). The differences between these parameters, obtained for pneumotachometry and impedance pneumography, were statistically insignificant.
机译：流量循环用于计算动态呼吸参数。我们检查了我们的新开发的阻抗气管仪是否能够在强制致命能力（FVC）机动期间测量适当的呼吸参数。使用已知的电极配置进行阻抗测量，该电极配置在阻抗肺扫描（IP）和Pneumo-To气相符（PNT）信号之间提供良好的线性度。测试是对14名年轻志愿者（11名男性和3名女性）进行的测试，没有呼吸功能障碍的症状。记录了来自ICHEDACTION轴影和来自参考方法的气流信号的体积相关信号，肺部测压测量法。使用在校准期间确定的传递函数将IP信号转换为音量单元，并且获得IP和PNT的流量环。使用修改的Mahalanobis距离指标进行比较它们的形状。此外，我们将峰值呼气流量（PEF）的时间与PEF的总呼气时间（T_（T_（TPEF）/ T_E）的比率进行了比较到PEF到最大体积的体积（V_（TPEF）/ V_E）。对于肺气管测定法和阻抗肺术而获得的这些参数之间的差异在统计学上微不足道。

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