Volume 107, Number 3, August 2014
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||24 July 2014|
Liberation of a pinned spiral wave by a rotating electric pulse
1 Department of Physics, Hangzhou Dianzi University - Hangzhou 310018, China
2 Department of Physics, Lanzhou University of Technology - Lanzhou 730050, China
3 Department of Physics, Zhejiang University - Hangzhou 310027, China
Received: 1 June 2014
Accepted: 7 July 2014
Spiral waves may be pinned to anatomical heterogeneities in the cardiac tissue, which leads to monomorphic ventricular tachycardia. Wave emission from heterogeneities (WEH) induced by electric pulses in one direction (EP) is a promising method for liberating such waves by using heterogeneities as internal virtual pacing sites. Here, based on the WEH effect, a new mechanism of liberation by means of a rotating electric pulse (REP) is proposed in a generic model of excitable media. Compared with the EP, the REP has the advantage of opening wider time window to liberate pinned spiral. The influences of rotating direction and frequency of the REP, and the radius of the obstacles on this new mechanism are studied. We believe this strategy may improve manipulations with pinned spiral waves in heart experiments.
PACS: 87.19.Hh – Cardiac dynamics / 82.40.Ck – Pattern formation in reactions with diffusion, flow and heat transfer / 47.54.-r – Pattern selection; pattern formation
© EPLA, 2014
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