FIGURE 2.

Fractionation map created during tachycardia in the triangle of Koch with the local intracardiac electrograms in the white‐colored area where the most fractionated signals are detected in the map. The color bar colors the higher fractionated potential area (fractionation threshold ≥8) as white and the lower fractionated potential area (fractionation threshold <4) as purple. Fractionation thresholds between 4 and 8 to 4 are colored blue, light blue, green, yellow, orange, and red. CS, coronary sinus; d, distal; HRA, high right atrium; p, proximal.