Skip to main content
. Author manuscript; available in PMC: 2012 Apr 17.
Published in final edited form as: IEEE Rev Biomed Eng. 2011;4:89–102. doi: 10.1109/RBME.2011.2173761

Fig. 6.

Fig. 6

Transmembrane potential distribution at shock-end in the rabbit heart for various shock electrode configurations, waveforms, strengths, and polarities as indicated within each panel. Color scale is saturated, i.e., the transmembrane potentials above 20 mV and below 90 mV appear as 20 and 90 mV, respectively. (A) External shocks are monophasic, 4-ms long, and of strengths shown in the figure; they are applied at a coupling interval of 105 ms. For each case, the anterior epicardium and endocardium, and a transmural view of the ventricles are shown. Images are based on figures published in [94]. (B) External truncated-exponential monophasic shocks of reversed polarity and strength ~5 Vcm−1. Anterior epicardium and transmural views of the ventricles are shown. Images are based on figures published in [94]. (C) External truncated-exponential (62% tilt) monophasic and biphasic shocks are of 10 ms duration, coupling interval 220 ms, and of strengths shown in the figure. Anterior epicardium and transmural views of the ventricles are shown. Biphasic shock polarity reverses at 6 ms. In addition, the distribution of transmembrane potential 10 ms after shock-end is shown in a transmural view. (C) ICD-like electrode configuration delivers truncated-exponential (62% tilt) biphasic shocks of 10 ms duration at coupling interval 140 ms, and of strengths shown in the figure.