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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Circ Res. 2013 Mar 1;112(5):863–874. doi: 10.1161/CIRCRESAHA.112.279315

Figure 5.

Figure 5

Scar-related reentrant VT. The scar is inferobasal. A. Epicardial activation isochrones for a sinus capture (SC) beat. B. The activation pattern during VT beat. A clockwise reentry loop (white arrows in left lateral and LAO inferior views) is anchored to the scar. Pink arrows depict a wavefront propagating in a clockwise fashion into the RV. ECG lead V2 (inset) shows two VT beats (red, B) interrupted by a SC beat (blue, A) followed by another VT beat (VT is monomorphic). Online Movie I shows this entire sequence as imaged by ECGI. C. (left) single-photon emission computed tomography (SPECT) of inferobasal scar (blue). (Right) Endocardial activation during VT mapped with a NavX catheter (red is early; blue is late). Right column presents (top): Twelve lead body-surface ECG of VT; (bottom): signals recorded by the ablation catheter. LAO = left anterior oblique. RAO = right anterior oblique. See Online Movie I. From reference 52 with permission.