Inner-Cath N=42 Outer-Cath N=32
P
Success rate of LV lead placement, (%) 42 (100) 30 (93.8) 0.10
Use of additional catheter, (%) † 2 (4.8) 18 (56.3) <0.001
Total procedure time [min] 148±38 168±42 0.024
Time to LV lead placement [min] 77±35 96±36 0.011
Fluoroscopic time [min] 39±20 47±26 0.10
Fluoroscopic dose [mGy] 343±290 321±180 0.71
Contrast dose [ml] 43±27 31±15 0.12
LV lead threshold [V, 0.4msec ] 0.9±0.5 1.2±0.5 0.049
LV lead impedance [ohm] 597±195 584±182 0.79
LV lead dislodgement during peeling-off of guiding sheaths, (%) 5 (11.9) 6 (18.6) 0.42
Location of LV lead placement, (%)
Antero-lateral 14 (33.3) 4 (12.9) 0.11
Mid-lateral 15 (35.7) 17 (54.8)
Postero-lateral 13 (31.5) 10 (32.3)