Title :
Virtual electrodes induced throughout bulk myocardium by ICD defibrillation
Author :
Aguel, F. ; Trayanova, N.A. ; Siekas, G. ; Eason, J.C. ; Fishler, M.G. ; Street, A.M.
Author_Institution :
Dept. of Biomed. Eng., Tulane Univ., New Orleans, LA, USA
Abstract :
Virtual electrodes have been observed on the epicardium using an optical recording techniques. Although they are hypothesized to be responsible for both termination and re-initiation of reentrant activity, they have not been observed in the bulk of the myocardium due to experimental limitations. By using a detailed finite element model of the human torso that incorporates a bidomain ventricular myocardium with realistic fibrous architecture, evidence for the existence of virtual electrodes within the myocardial bulk is presented
Keywords :
biomedical electrodes; cardiology; defibrillators; finite element analysis; muscle; physiological models; ICD defibrillation; bulk myocardium; detailed finite element model; epicardium; human torso; implantable cardioverter defibrillators; induced virtual electrodes; optical recording techniques; realistic fibrous architecture; reentrant activity reinitiation; reentrant activity termination; Biomedical electrodes; Biomedical engineering; Defibrillation; Electric shock; Finite element methods; Heart; Humans; Myocardium; Optical recording; Torso;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802363
