Do mathematical model studies settle the controversy on the origin of cardiac synchronous trans-thoracic electrical impedance variations? A systematic review
| Autor: | Th. J. C. Faes, A de Sitter, R M Verdaasdonk |
|---|---|
| Přispěvatelé: | Radiology and nuclear medicine, Physics and medical technology, ICaR - Heartfailure and pulmonary arterial hypertension |
| Rok vydání: | 2016 |
| Předmět: |
Mathematical model
medicine.diagnostic_test Physiology 0206 medical engineering Biomedical Engineering Biophysics Heart 02 engineering and technology 030204 cardiovascular system & hematology Models Theoretical Thorax 020601 biomedical engineering Cardiography Impedance Impedance cardiography 03 medical and health sciences 0302 clinical medicine Physiology (medical) medicine Electric Impedance Humans Statistical physics Electrical impedance Mathematics Biomedical engineering Systematic search |
| Zdroj: | de Sitter, A, Verdaasdonk, RM & Faes, T J C 2016, ' Do mathematical model studies settle the controversy on the origin of cardiac synchronous trans-thoracic electrical impedance variations? A systematic review ', Physiological Measurement, vol. 37, no. 9, pp. R88-R108 . https://doi.org/10.1088/0967-3334/37/9/R88 Physiological Measurement, 37(9), R88-R108. IOP Publishing Ltd. |
| ISSN: | 1361-6579 0967-3334 |
| DOI: | 10.1088/0967-3334/37/9/R88 |
| Popis: | Impedance cardiography (ICG) is a method to evaluate cardiac-stroke volume and cardiac-output by measuring the cardiac-synchronous changes in the dynamic trans-thoracic electrical impedance (ΔZ). Clinical evaluations on the accuracy of ICG showed varying results. Consequently, the classic assumption in ICG-the aorta as a main source of ΔZ-is questioned and subsequently investigated in simulation studies using mathematical models of the electrical resistivity of the human body. The aim is to review the consensus in mathematical modelling studies that investigate the origin of the ΔZ as measured in ICG. In a systematic literature search, studies were identified and surveyed with reference to characteristics, such as included organs and their resistivity and geometries, electrode positions and calculation of ΔZ, to review the consensus between mathematical modelling studies that investigate the origin of the ΔZ as measured in ICG. Thirteen papers showed considerable variation in the model's characteristics with varying or contradicting outcomes for the ΔZ 's origin. For instance, 11 studies excluded perfused muscle tissue, implying implicitly their insignificance, while 3 other studies included muscle tissue and indicated it as the most important origin of ΔZ. In conclusion, the reviewed papers show a lack of consensus with respect to both the modelled characteristics as well as the model outcomes and, as a result, these studies failed to settle the controversy on ΔZ 's origin. Recommendations have been added to improve future mathematical model studies. |
| Databáze: | OpenAIRE |
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