Abstract

This paper is on development of venous thrombosis using Impedance Plethsmography which can be used in institute laboratory, colleges for learning which is efficient to understand the actual working of Impedance Plethsmography. A small 1mA, 50 KHz current is injected into the body through two electrodes and the induced voltage is picked up using another pair of electrodes and placed inside the current electrodes. The amplitude of the signal thus obtained is directly proportional to the electrical impedance (Zo) offered by the body segment between the voltage electrodes. A change in the impedance, which is caused by physiological processes like blood clot, respiration, etc., modulates the amplitude of the carrier. A battery operated low cost and compact Bioelectrical Impedance Meter is developed which can be used for estimation of body impedance, stroke volume, cardiac output, arterial pulse wave velocity and bone mineral density. It is used to measure body impedance from healthy subjects in a lab setup. These parameters may be used for estimation of body impedance.

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