使用呼吸机驱动的强迫振荡来表征低频的人体呼吸力学

Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI:10.1109/NEBC.1991.154586

David W. Kaczka, K. Yang, G. Barnas, K. Lutchen

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引用次数: 0

摘要

将频域技术与离线和在线时域技术进行比较，以使用标准呼吸机低频波形估计呼吸力学特性。这两种方法都显示出对简单的串联RC模型和纯正弦波输入产生一致的参数估计。然而，当使用阶跃流波形时，他们不能准确地预测呼吸阻力在0到1hz之间的频率依赖性。这种行为可以追溯到信号噪声限制和非线性。

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Use of ventilator driven forced oscillations for characterizing human respiratory mechanics at low frequencies

Frequency domain and offline and online time domain techniques are compared to estimate respiratory mechanical properties using standard ventilator waveforms at low frequencies. Both methods are shown to yield consistent parameter estimates for a simple series RC model and pure sine wave input. However, they could not accurately predict frequency dependence of respiratory resistance from 0 to 1 Hz when using a step flow waveform. This behavior is traced to signal-to-noise limitations and nonlinearities.<>

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Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference

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