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. 2017 Feb 10;3(4):215–218. doi: 10.1016/j.hrcr.2017.01.003

Figure 1.

Figure 1

Surface electrocardiogram (50 mm/s) and intracardiac electrocardiogram (200 mm/s). A: Sinus rhythm and nonsustained ventricular tachycardia (NSVT) in the first session. B: Sinus rhythm and NSVT in the second session. C: An excellent pace map at a mid-level of the posterior papillary muscle in the second session. D: Intracardiac electrocardiogram at the successful ablation site in the second session. Prepotential (indicated by arrow) preceded the onset of the surface QRS complex by 22 ms during NSVT.