baseline final follow-up P value
VP percentage (%) 81.67±32.16% 92.79±19.15% 0.124
Threshold (V@0.4ms) 1.18±0.76 1.26±0.91 0.581
Threshold in AF subgroup 1.07±0.70 1.15±0.70 0.582
Threshold in Non-AF subgroup 1.34±0.84 1.44±1.19 0.788
Impedance (Ω) 616.76±148.89 493.09±118.85 0.108
Sensed R wave (mV) 4.85±2.08 4.56±1.94 0.148