Electric field plethysmography-a simple tool for monitoring ofrespiratory-cardiac synchronism

摘要

A project is reviewed which applies electric field plethysmographyto both respiratory and cardiac components in an equal way. Electrodepositioning and signal processing are optimized in order to produce asum-signal which finally is separated into a respiratory and a cardiacsignal by means of adaptive filtering, neural networks, weightedsubtraction or Fourier analysis, respectively. For the first time, thetest system offers a simple tool for a precise determination of theexact synchronism between respiratory and cardiac activity