Electrode positioning to investigate the changes of the thoracic bioimpedance caused by aortic dissection – a simulation study

Research output: Contribution to journalArticle

Abstract

Impedance cardiography (ICG) is a non-invasive method to evaluate several cardiodynamic parameters by measuring the cardiac-synchronous changes in the dynamic transthoracic electrical impedance. ICG allows us to identify and quantify conductivity changes inside the thorax by measuring the impedance on the thorax during a cardiac cycle. Pathologic changes in the aorta, like aortic dissection, will alter the aortic shape as well as the blood flow and consequently, the impedance cardiogram. This fact distorts the evaluated cardiodynamic parameters, but it could lead to the possibility to identify aortic pathology. A 3D numerical simulation model is used to compute the impedance changes on the thorax surface in case of the type B aortic dissection. A sensitivity analysis is applied using this simulation model to investigate the suitability of different electrode configurations considering several patient-specific cases. Results show that the remarkable pathological changes in the aorta caused by aortic dissection alters the impedance cardiogram significantly.
Original languageEnglish
Article number1891-5469
Pages (from-to)38-48
Number of pages11
JournalJournal of Electrical Bioimpedance
Volume11
Issue number1
DOIs
Publication statusPublished - 25 Jun 2020

Keywords

  • Bioimpedance
  • numerical modeling
  • sensitivity analysis
  • Aortic dissection (AD)
  • Sensitivity analysis
  • Aortic dissection
  • Numerical simulation
  • Impedance cardiography

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering

Fields of Expertise

  • Information, Communication & Computing

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