Sources of the thoracic cardiogenic electrical impedance signal as determined by a model

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

A three-dimensional electrical model was developed to study the origin of ΔZ due to cardiac activity recorded from band electrodes around the neck and lower thorax. Volume changes were simulated with resistivity changes in the lungs, large arteries, large veins and atria, ventricles, small arteries and veins and the skeletal muscle for a typical 80 ml ventricular stroke volume. The results showed the contributions to ΔZ to be 61 per cent from the lungs, 23 per cent from the large arteries and 13 per cent from the skeletal muscle. The ΔZ signal was most sensitive to skeletal muscle volume change The results indicate that the ΔZ signal has many origins which could cause significant error in calculated cardiac function it all the regions do not change in the normal related pattern.

Original languageEnglish (US)
Pages (from-to)411-417
Number of pages7
JournalMedical & Biological Engineering & Computing
Volume23
Issue number5
DOIs
StatePublished - Sep 1 1985

Keywords

  • Cardiac output
  • Impedance cardiography
  • Impedance plethysmography
  • Modelling
  • Stroke volume

Fingerprint Dive into the research topics of 'Sources of the thoracic cardiogenic electrical impedance signal as determined by a model'. Together they form a unique fingerprint.

Cite this