Impact of endocardial lead position on transvenous defibrillation efficacy: a simulation study

Author

Aguel, F. ; Trayanova, NA ; Eason, JC ; Siekas, G. ; Fishler, MG ; Malkin, RA

Author_Institution

Dept. of Biomed. Eng., Tulane Univ., New Orleans, LA, USA

fYear

1997

fDate

7-10 Sep 1997

Firstpage

85

Lastpage

88

Abstract

This computational study examines the dependence of defibrillation threshold on the transvenous lead location in active-can transvenous lead defibrillation systems. Finite element models of the human thorax that incorporate (i) isotropic, (ii) realistic fiber architecture monodomain (intracellular space is ignored), and (iii) realistic fiber architecture bidomain (intracellular space accounted for) myocardial representations are used. Five right (RV) and one left (LV) ventricular transvenous lead positions and their combinations are examined. Employing the 95% critical mass above 5 V/cm DFT criterion, it was found that lv→can configuration has the lowest DFTs. Of the single RV electrodes, the posterior location resulted in the lowest DFT in the model with realistic fiber architecture

Keywords

defibrillators; finite element analysis; physiological models; active-can transvenous lead defibrillation systems; computational study; endocardial lead position; finite element models; human thorax; intracellular space; myocardial representations; realistic fiber architecture monodomain; simulation study; single right ventricular electrodes; transvenous defibrillation efficacy; Anisotropic magnetoresistance; Anodes; Biomedical engineering; Cathodes; Computational modeling; Conductivity; Defibrillation; Electrodes; Finite element methods; Humans;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1997

Conference_Location

Lund

ISSN

0276-6547

Print_ISBN

0-7803-4445-6

Type

conf

DOI

10.1109/CIC.1997.647836

Filename

647836