Title :
Fluorescent imaging of the vortex core in the rabbit heart
Author :
Efimov, I.R. ; Cheng, Y. ; Sidorov, V.Y. ; Wollenzier, B.
Author_Institution :
Cleveland Clinic Found., OH, USA
Abstract :
Vortex-like electrical activity underlies most of cardiac arrhythmias. The type and severity of cardiac arrhythmias depend upon the number and dynamics of the vortices. The authors simulated vortex-like electrical activity in a 2D Luo-Rudy model (1991) and observed three basic types of vortices: circular, cycloidal and linear. Theory predicts that the linear core is present in normal myocardium, while the cycloidal and circular cores are in tissues with suppressed sodium and calcium ionic conductivity, i.e. during ischemia
Keywords :
bioelectric phenomena; cardiology; fluorescence; physiological models; 2D Luo-Rudy model; Ca; Na; cardiac electrophysiology; circular vortex; cycloidal vortex; fluorescent imaging; linear vortex; normal myocardium; rabbit heart; vortex core; vortex-like electrical activity; Calcium; Conductivity; Fluorescence; Heart; Ischemic pain; Morphology; Myocardium; Rabbits; Shape; Voltage;
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.1999.802199
