Mini Electrodes on Ablation Catheters: Valuable Addition or Redundant Information?—Insights from a Computational Study

Table 1

Overview of intracellular and extracellular conductivities and CV for several temperature ranges. The intracellular conductivity in the border zones was exponential and is given as the range of values in this zone. We assumed a specific membrane capacity of 0.1 μF/cm² and a surface to volume ratio of 100 mm⁻¹ for the myocardium [25].

Material	σi (S/m)	σe (S/m)	CV (mm/s)
Myocardium	0.40	0.264	800
Blood	—	0.70	—
Lesion (40–43°C)	0.47–0.53	0.264	844–873
Lesion (43–46°C)	0.53–0.36	0.264	873–784
Lesion (46–50°C)	0.36–0.01	0.264	784–160
Lesion (necrotic)	—	0.10	—
Electrode	—		—
Isolation	—		—