Cardiology Research and Practice / 2024 / Article / Tab 3 / Research Article
Guidewire Ablation within the Coronary Venous System for Epicardial or Intramural Ventricular Arrhythmia: A Preclinical Study of Biophysical Characterization Table 3 Ablation characteristics and lesion dimension at variable ablation duration in an ex vivo model.
10 mm group 20 mm group 10 mm group 20 mm group 10 mm group 20 mm group 10 mm group 20 mm group 10 mm group 20 mm group 10 mm group 20 mm group 10 mm group 20 mm group 10 s 20 s 30 s 40 s 50 s 60 s 90 s Baseline impedance (Ω) 195.8 ± 18.2 138.0 ± 6.9 <0.01 194.0 ± 15.1 141.3 ± 8.1 <0.01 190.0 ± 12.9 142.8 ± 8.6 <0.01 193.8 ± 17.2 145.0 ± 10.5 <0.01 192.5 ± 16.9 144.0 ± 11.0 <0.01 194.2 ± 14.9 138 ± 5.6 <0.01 194.3 ± 11.7 142.2 ± 10.4 <0.01 Impedance drop (Ω) 45.2 ± 4.9 22.0 ± 4.1 <0.01 52.7 ± 4.0 26.2 ± 3.9 <0.01 57.0 ± 3.7 28.3 ± 5.0 <0.01 59.2 ± 4.3 31.2 ± 3.3 <0.01 62.2 ± 3.9 30.8 ± 3.4 <0.01 64.0 ± 4.4 31.3 ± 4.3 <0.01 65.8 ± 3.3 33.8 ± 4.3 <0.01 Steam pop incidence (%) 0 0 — 0 0 — 0 0 — 0 0 — 0 0 — 0 0 — 17 0 — Lesion’s maximum diameter (mm) 2.4 ± 0.5 1.6 ± 0.6 0.025 4.6 ± 0.5 2.5 ± 0.8 <0.01 4.9 ± 0.4 3.2 ± 0.5 <0.01 5.9 ± 0.4 4.0 ± 0.5 <0.01 6.1 ± 0.4 4.3 ± 0.4 <0.01 7.0 ± 0.8 4.5 ± 0.4 <0.01 9.2 ± 0.7 5.3 ± 0.7 <0.01 Lesion’s minimum diameter (mm) 2.1 ± 0.6 1.2 ± 0.6 0.02 4.0 ± 0.3 1.9 ± 0.8 <0.01 4.4 ± 0.3 2.9 ± 0.4 <0.01 5.0 ± 0.7 3.5 ± 0.5 0.02 5.7 ± 0.3 3.7 ± 0.3 <0.01 6.0 ± 0.5 4.1 ± 0.4 <0.01 7.7 ± 0.6 4.6 ± 0.7 <0.01
