Procedural characteristics |
|
|
|
|
Screw attempts, n |
2 ±0.9 |
2 ±0.8 |
2 ±1.0 |
0.864 |
Implant depth, mm |
13 ±1.4 |
13 ±1.0 |
13 ±1.7 |
0.472 |
Total fluoroscopy time, min |
11 ±6.5 |
9 ±3.5 |
13 ±7.5 |
0.188 |
Procedural time, min |
65 ±23.7 |
61 ±15.9 |
69 ±27.5 |
0.500 |
Paced ECG characteristics |
|
|
|
|
Paced QRS duration, ms |
130 ±22.2 |
127 ±20.3 |
131 ±23.6 |
0.570 |
Stimulus to LVAT, ms |
72 ±12.8 |
73 ±15.2 |
71 ±11.2 |
0.703 |
Pacing characteristics at implant |
|
|
|
|
Unipolar threshold, V |
0.5 ±0.17 |
0.5 ±0.15 |
0.4 ±0.17 |
0.251 |
Bipolar threshold, V |
0.5 ±0.26 |
0.6 ±0.09 |
0.5 ±0.31 |
0.466 |
Unipolar R-wave sensing, mV |
13 ±7.1 |
12 ±9.5 |
15 ±4.8 |
0.686 |
Bipolar R-wave sensing, mV |
13 ±6.1 |
13 ±6.2 |
13 ±6.2 |
0.799 |
Unipolar impedance, ohms |
414 ±57.3 |
388 ±47.6 |
431 ±58.0 |
0.073 |
Bipolar impedance, ohms |
592 ±68.3 |
557 ±87.0 |
617 ±39.5 |
0.060 |
Pacing characteristics at 1 month |
|
|
|
|
Unipolar threshold, V |
0.6 ±0.33 |
0.7 ±0.22 |
0.6 ±0.37 |
0.391 |
Bipolar threshold, V |
0.7 ±0.31 |
1.0 ±0.40 |
0.7 ±0.26 |
0.172 |
Bipolar R-wave sensing, mV |
13 ±5.5 |
11 ±7.2 |
14 ±4.8 |
0.443 |
Unipolar impedance, ohms |
399 ±84.2 |
372 ±98.9 |
412 ±77.6 |
0.153 |
Bipolar impedance, ohms |
571 ±68.7 |
594 ±104.3 |
566 ±63.2 |
0.676 |
Complications |
|
|
|
|
Acute complications |
|
|
|
|
Pneumothorax, n (%) |
1 (2) |
1 (5) |
0 (0) |
0.444 |
Septal perforation during implant, n (%)
Tamponade, n (%)
|
3 (7)
0 (0)
|
1 (5)
0 (0)
|
2 (8)
0 (0)
|
1.000
/
|
Echocardiographic evaluation post implant |
|
|
|
|
Ventricular septal defect, n (%)
Septal coronary artery fistula, n (%)
|
0 (0)
1 (2)
|
0 (0)
1 (5)
|
0 (0)
0 (0)
|
/
0.444
|
Complications during follow up |
|
|
|
|
Lead dislodgment, n (%) |
0 (0) |
0 (0) |
0 (0) |
/ |
Lead revision, n (%) |
0 (0) |
0 (0) |
0 (0) |
/ |
Increase in pacing threshold of > 2V |
0 (0) |
0 (0) |
0
(0) |
/ |