Abstract

<p>(A) Normalized peak negative voltage (PNV) distribution of the RV in a posterior caudal view. The orange border zone rerepresents areas with voltages around 30% of the peak negative potential. (B) Isopotential map shows the activation sequence (frames 1–4). Color scale has been set so that white indicates the most negative potential and purple indicates the least negative potential. Virtual electrodes (V1-1 to V1-4) are placed along the propagation of activation wavefront from EA site (Frame 1) to BO site (Frame 4). The green arrows indicate the activation wavefron propagating from EA to BO site, then spreading out at BO site. The virtual unipolar electrograms reveal a QS pattern at the origin.</p

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