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. 2024 Nov 20;14(11):1113. doi: 10.3390/jpm14111113

Figure 12.

Figure 12

Electrograms on the PentaRay mapping catheter (Rows A1–D4) in sinus rhythm are notable for highly fractionated signal following the ventricular electrogram indicating local abnormal ventricular activity. There are also late potentials present after greater than 100 milliseconds of local delay. Selected late potentials are highlighted (red arrows). These are indicative of significant scar and poor conduction through this area. These areas were later targeted for ablation. Catheter positions are previously described in Figure 11.