强迫振荡法中的流量和口腔压测量

MEASUREMENT OF THE RESPIRATORY FLOW AND ORAL PRESSURE IN THE FORCED OSCILLATION METHOD

本文介绍一种用于强迫振荡法呼吸系统阻抗测量中测量流量和口腔压的装置。所用的传感器为ＭＯＴＯＲＯＬＡ公司生产的ＭＰＸ系列横向压阻型压力传感器ＭＰＸ１１Ｄ。它具有灵敏度高、稳定、成本低廉等优点。该装置的压＇强灵敏度为２５０ｖ／ｋＰａ，流量灵敏度为１，２（Ｖ／ｍｌ·Ｓ）。它不但已用于强迫振荡法阻抗测量中，而且也可用于肺功能测量和呼吸监护。

n apparatus for measuring the respiratory flow and oral pressure used in the impedance measurement of respiratory system by forced oscillation method(FOM)was introduced.The MPX11D produced by Motorola Company was used as the pressure transducer. This transducer had the advantages of small size,high sensitivity and great stability. The pressure and flow sensi-tivities of the apparatus were 250V/kPa and l.2v/ml·s,respectively. The apparatus had been successfully used in the impedance measurement system of respiration system by FOM. It could be used in spirometer and respiratory monitor as well.