Title :
Reorganization and termination of a spiral wave reentry following a defibrillation shock
Author :
Skouibine, Kirill ; Trayanova, Natalia ; Moore, Peter
Author_Institution :
Dept. of Math., Tulane Univ., New Orleans, LA, USA
fDate :
30 Oct-2 Nov 1997
Abstract :
This modeling study examines the behavior of a spiral wave reentry during and after a defibrillation shock in tissue slices of various dimensions. The tissue is represented as a two-dimensional anisotropic bidomain with modified Beeler-Reuter kinetics. Stable reentry is induced by means of cross-stimulation. The defibrillation shock is delivered via extracellular line or point electrodes located at the opposite tissue borders. Shocks delivered through line electrodes were less successful in extinguishing the rotor. The advantage of the shocks administered via the point electrodes in terminating the reentrant circuit is attributed to their ability to generate interelectrode regions of depolarization
Keywords :
bioelectric phenomena; biomedical electrodes; defibrillators; electric shocks; physiological models; defibrillation shock; extracellular line; interelectrode depolarization regions generation; modified Beeler-Reuter kinetics; opposite tissue borders; point electrodes; reentrant circuit; spiral wave reentry; spiral wave reorganization; spiral wave termination; tissue slices; two-dimensional anisotropic bidomain; Anisotropic magnetoresistance; Biomembranes; Defibrillation; Electric shock; Electrodes; Equations; Extracellular; Kinetic theory; Myocardium; Spirals;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.754449
