Estimation of the Pulmonary Elastance Using a Recursive Parameter Estimation Method and Setting of the Ventilation Condition Using Fuzzy Logic

Abstract

Artificial respirators are widely used for patients with little or no autonomous breathing ability. Doctors are required to pay scrupulous attention for the use of the artificial respirators. And doctors must set the artificial respirator in consideration of each patient’s pulmonary characteristic. However,the setting of the artificial respirator is decided by the experience and the intuition of the doctor now. The purpose of this study is to develop a method to estimate the static P −V curve and the pulmonary elastance of the patient and to set a ventilation condition of the artificial respirator. In our previous work, we have presented an estimation technique of the pulmonary elastance by fuzzy logic. By improving previous technique, this study succeeded in improving the precision of the pulmonary elastance estimation. In addition, a ventilation condition of the artificial respirator is set using estimated static P −V curve and fuzzy logic.