Contribution of the Left Anterior Myocardium to the Body Surface Potentials in Case of Apical Ectopic Beat

Author

Vaisanen, J. ; Requena-Carrion, J. ; Alonso-Atienza, F. ; Rojo-Alvarez, J.L. ; Malmivuo, J. ; Hyttinen, Jari

Author_Institution

Tampere Univ. of Technol., Tampere

fYear

2007

fDate

22-26 Aug. 2007

Firstpage

931

Lastpage

934

Abstract

The present paper describes a study where effects of anterior myocardium on body surface potentials were investigated. The study combines numerical lead field analysis combined with cardiac automata model. Electric fields are calculated with finite difference method in a 3-D model of male thorax. The cardiac activation applied in the study is an ectopic beat originating in the apex. The correlations and mean differences between signal generated by anterior segments of left ventricle and signal generated by both ventricles were analysed for 117 leads. The results show that there are leads which have high correlation (>0.9) with low the relative mean difference (<0.2) between the signals generated by anterior segments and signals generated by whole ventricles. These electrode locations would be optimal to monitor the activation of anterior segments when ectopic beats originate in apex.

Keywords

bioelectric potentials; biomedical electrodes; electrocardiography; finite difference methods; 3-D male thorax model; apical ectopic beat; body surface potentials; cardiac activation; cardiac automata model; electrocardiography; electrode systems; finite difference method; left anterior myocardium; numerical lead field analysis; Bioelectric phenomena; Biological system modeling; Electric potential; Electrodes; Finite difference methods; Heart rate variability; Monitoring; Myocardium; Signal generators; Thorax; Adult; Body Surface Potential Mapping; Cardiac Complexes, Premature; Computer Simulation; Diagnosis, Computer-Assisted; Electrocardiography; Heart Conduction System; Humans; Male; Models, Cardiovascular;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Conference_Location

Lyon

ISSN

1557-170X

Print_ISBN

978-1-4244-0787-3

Type

conf

DOI

10.1109/IEMBS.2007.4352444

Filename

4352444