Vol 61, No 8 (2004)
Other
Published online: 2005-12-12
Submitted: 2012-12-28
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Holter-type impedance cardiography device. A system for continuous and non-invasive monitoring of cardiac haemodynamics

Gerard Cybulski, Edward Koźluk, Ewa Michalak, Wiktor Niewiadomski, Agnieszka Piątkowska
Kardiol Pol 2004;61(8):143-146.
Vol 61, No 8 (2004)
Other
Published online: 2005-12-12
Submitted: 2012-12-28

Abstract

Abstract: Impedance cardiography (ICG) enables the non-invasive, reproducible, beat-to-beat estimation of stroke volume (SV) changes, and the measurement of the absolute values of the ejection time (ET) and pre-ejection period (PEP), which allows the indirect evaluation of cardiac contractility. The miniaturised, Holter-type impedance cardiography device with built-in one channel of ECG called ReoMonitor, was constructed. The system allows the long-term, beat-to-beat, automatic evaluation of SV, ET, PEP and heart rate. The measurements obtained by ReoMonitor were verified using on echocardiographic method in supine and tilted positions. A high correlation coefficient (r=0.83) was calculated between the measurements collected using both methods. Speech or vigorous movement distinctly lowered the percentage of properly recognised cardiac cycles (during daytime: 20-80%, during the night: 75-90%). However, during exercise testing on a cycloergometer the quality of recordings was good. The following clinical applications of a system are presented: a) evaluation of haemodynamical abnormalities caused by arrhythmia events, b) vasovagal syncope diagnosis, and c) optimisation of atrio-venticular delay during dual-chamber pacing.

Abstract

Abstract: Impedance cardiography (ICG) enables the non-invasive, reproducible, beat-to-beat estimation of stroke volume (SV) changes, and the measurement of the absolute values of the ejection time (ET) and pre-ejection period (PEP), which allows the indirect evaluation of cardiac contractility. The miniaturised, Holter-type impedance cardiography device with built-in one channel of ECG called ReoMonitor, was constructed. The system allows the long-term, beat-to-beat, automatic evaluation of SV, ET, PEP and heart rate. The measurements obtained by ReoMonitor were verified using on echocardiographic method in supine and tilted positions. A high correlation coefficient (r=0.83) was calculated between the measurements collected using both methods. Speech or vigorous movement distinctly lowered the percentage of properly recognised cardiac cycles (during daytime: 20-80%, during the night: 75-90%). However, during exercise testing on a cycloergometer the quality of recordings was good. The following clinical applications of a system are presented: a) evaluation of haemodynamical abnormalities caused by arrhythmia events, b) vasovagal syncope diagnosis, and c) optimisation of atrio-venticular delay during dual-chamber pacing.
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Keywords

impedance cardiography - stroke volume - systolic time intervals - arrhythmia - vasovagal syncope - atrio-ventricular delay

About this article
Title

Holter-type impedance cardiography device. A system for continuous and non-invasive monitoring of cardiac haemodynamics

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 61, No 8 (2004)

Pages

143-146

Published online

2005-12-12

Bibliographic record

Kardiol Pol 2004;61(8):143-146.

Keywords

impedance cardiography - stroke volume - systolic time intervals - arrhythmia - vasovagal syncope - atrio-ventricular delay

Authors

Gerard Cybulski
Edward Koźluk
Ewa Michalak
Wiktor Niewiadomski
Agnieszka Piątkowska

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