Title :
Pericardial effusion increases defibrillation threshold-a finite element method study
Author :
Chou, Shih-tsun Alex ; Nyenhuis, John A. ; Bourland, Joe D. ; Tacker, Willis A. ; Hansen, David J.
Author_Institution :
Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
The effects of pericardial effusion on defibrillation threshold were investigated by numerical calculations of defibrillating current density distributions with finite element method solution of the Laplace equation. The calculations showed that pericardial effusion increases defibrillation threshold from 2.46 to 3.48 Joule (per 10 msec pulse), and decreases inter-electrode impedance from 78 to 41 Ω
Keywords :
Laplace equations; bioelectric potentials; biological fluid dynamics; cardiology; current density; current distribution; defibrillators; effusion; electric impedance; mesh generation; physiological models; 2.46 to 3.48 J; Laplace equation; defibrillating current density distributions; defibrillation threshold; finite element method; inter-electrode impedance; numerical calculations; pericardial effusion; Blood; Conductivity; Current density; Defibrillation; Electrodes; Equations; Finite element methods; Heart; Impedance; Myocardium;
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
DOI :
10.1109/IEMBS.1995.575129
