Automatic digital-analog impedance plethysmograph

GOY, CARLA BELÉN; MAURO, KEVIN ALFONSO; YANICELLI, LUCÍA MARÍA; PARODI, NICOLAS FRANCO; GOMEZ LOPEZ, MARIA DE LOS ANGELES; HERRERA, MYRIAM CRISTINA

San Nicolás

Congreso; XX Congreso Argentino de Bioingeniería y y IX Jornadas de Ingeniería Clínica; 2015

Sociedad Argentina de Bioingeniería

Venous occlusion plethysmography (VOP) is a traditional method widely used to assess limb blood circulation. One common mode to record VOP is by means of evaluating limb volume changes using impedance plethysmography (IP). In this paper the design and implementation of an automatic digital-analog impedance plethysmograph (ADAIP) for VOP is presented. The system is tested using precision resistances in order to calculate its repeatability. Then its global performance is assessed by means of VOP recordings on the upper and the lower limb of a healthy volunteer. The obtained repeatability was very high (95%), and the VOP recordings where the expected ones. It can be concluded that the whole system performs well and that it is suitable for automatic VOP recording.