Table 2 Procedural characteristics in patients with a CRT-D/P (mean ± SD) (n = 21)
Total (n = 21) | Group 1 (n = 10) | Group 2 (n = 11) | P value | |
|---|---|---|---|---|
LBBA lead | ||||
R-wave amplitude | – | 9.9 ± 7.2 | – | – |
Threshold (unipolar) (V/0.4 ms) | – | 0.84 ± 0.17 | – | – |
Impedance (unipolar) (Ω) | – | 678 ± 102 | – | – |
LVAT (ms) | – | 75.2 ± 9.4 | – | – |
RV DF lead | ||||
R-wave amplitude | 23.5 ± 8.4 | 24.3 ± 11.8 | 23.0 ± 6.5 | 0.825 |
Threshold (unipolar) (V/0.4 ms) | 0.82 ± 0.20 | 0.93 ± 0.10 | 0.75 ± 0.23 | 0.187 |
Impedance (unipolar) (Ω) | 578 ± 147 | 626 ± 77 | 546 ± 180 | 0.434 |
CS lead | ||||
R-wave amplitude | 18.3 ± 9.4 | 13.8 ± 2.6 | 22.1 ± 11.6 | 0.145 |
Threshold (unipolar) (V/0.4 ms) | 1.0 ± 0.24 | 0.96 ± 0.27 | 1.12 ± 0.20 | 0.301 |
Impedance (unipolar) (Ω) | 708 ± 134 | 745 ± 97 | 678 ± 160 | 0.434 |
CRTD (%) | 19(90.5%) | 9(90.0%) | 10(90.9%) | 1.000 |
Fluoroscopy Time (min) | 25.2 ± 7.1 | 29.2 ± 8.8 | 21.8 ± 3.1 | 0.086 |
Procedure time (min) | 135 ± 26 | 152 ± 31 | 122 ± 10 | 0.04 |