Application of Electroimpedance Spirometry for Clinical Assessment of Respiratory Function Indices

A practical method of studying the dynamics respiratory function associated with registration electrical impedance conductive biological fluids exhaled by patient is described. In model measuring cell, physical causes and relationships in conductivity air flow, saturated an electrolytic fluid aerosol created ultrasonic nebulizer have been investigated experimentally. The design a new spirometer form mouthpiece sensors, filled porous medium impregnated electrolyte, through which breathes, developed tested. To register fluctuations magnitude modulus, original hardware software complex used, made on basis high-speed analog-to-digital converter. Based analysis data, methods are proposed for quantitative assessment basic spirometric medical indicators characterizing state functioning patient's breathing apparatus, such as respiration rate, entry expiration volume, amount concentration lung fluid.