Detection method and system for determining pulmonary overexpansion by using electrical impedance tomography

Abstract

The invention describes a detection method for determining pulmonary overexpansion by using electrical impedance tomography. The detection method is used for detecting at least one factor causing pulmonary overexpansion based on electrical impedance tomography images. The detection method comprises the following steps of: judging whether an area with pulmonary overexpansion exists in an area of interest or not based on first pulmonary compliance corresponding to first positive end expiratory pressure and second pulmonary compliance corresponding to second positive end expiratory pressure; judging whether pulmonary overexpansion is caused by increase of positive end expiratory pressure or not based on change of gas capacity reference values of actual end expiratory pressure of the second positive end expiratory pressure and the first positive end expiratory pressure and change of gas capacity reference values of end expiratory pressure predicted based on the first pulmonary compliance; and judging whether pulmonary overexpansion is caused by tidal volume or not based on change of actual gas capacity reference values of end inspiratory pressure of the second positive end expiratory pressure and the end expiratory pressure of the first positive end expiratory pressure and change of gas capacity reference values predicted based on the first pulmonary compliance. Therefore, factors causing pulmonary overexpansion can be determined.

Description

Technical field [0001] The present disclosure generally relates to a detection method and system of determining excessive expansion of pulmonary excessive imaging using a resistance resistance. Background technique [0002] In response and critical medicine, mechanical ventilation treatment is applied properly, and many of the lives of critically ill patients can be used. The ventilator is an effective means of manually replacing autonomous ventilation function, which has been commonly used in clinical scenes (such as pulmonary replete, positive pressure titration or pulmonary resequential evaluation) to prevent or treat respiratory failure. . [0003] Currently, in the clinic, the corresponding lung protective ventilation strategy is often provided by ventilator to lung protective ventilation for patients. For example, in the case of ensuring ventilation, the amount of moisture is lowered by the ventilator, then give a certain amount of exhaled at the end of the actuator to open...

AI Technical Summary

Problems solved by technology

However, even with a small tidal volume (for example, a tidal volume of 6 to 8 ml / kg) or sufficient positive end-expiratory pressure to ventilate the patient lung-protectively through the ventilator, there is still May cause lung hyperinflation Whether this lung hyperinflation is caused by positive end expiratory pressure itself or by tidal volume at high positive end expiratory pressure remains to be studied

Images