Age (years) , mean ± SD |
78 ± 9 |
74 ± 16 |
0.6592 |
Female gender, n(%) |
5 (50) |
8 (40) |
0.602 |
BMI (kg/m2) , mean ± SD |
27 ± 5 |
28 ± 4 |
0.7084 |
Pacing indication |
|
|
|
Bradycardia, n(%) |
8 (80) |
17 (85) |
0.729 |
AVB II / III, n(%) |
2 (20) / 3 (30) |
2 (10) / 8 (40) |
0.536 |
Heartfailure, n(%) |
2 (20) |
6 (30) |
0.559 |
ECG characteristics |
|
|
|
Sinus rhythm, n(%) |
6 (60) |
12 (60) |
1.000 |
Atrial fibrillation, n(%) |
4 (40) |
8 (40) |
1.000 |
PR interval (ms), median[IQR] |
198 [177-360] |
226
[175-246] |
0.6236 |
QRSd (ms), mean ± SD |
126 ± 38 |
134 ± 41 |
0.6440 |
LBBB, n(%) |
1 (10) |
5 (25) |
0.393 |
RBBB, n(%) |
2 (20) |
6 (30) |
0.559 |
Echocardiographic parameters |
|
|
|
LVEF (%), mean ± SD |
52 ± 13 |
54 ± 15 |
0.8079 |
LADplax (mm), mean ± SD |
45 ± 5 |
44 ± 7 |
0.9186 |
IVSd (mm), mean ± SD |
11 ±2 |
11 ± 2 |
0.7060 |
Procedural characteristics |
|
|
|
Successful implantation, n(%) |
10 (100) |
20 (100) |
|
Implantation attempts, mean ± SD |
2 ± 1 |
1 ± 0 |
0.1448 |
Procedure time (min), mean ± SD |
87 ± 39 |
68 ± 29 |
0.2334 |
Fluoroscopy time (sec), median[IQR] |
8 [3-17] |
4 [2-7] |
0.2050 |
DAP (mGycm2) |
3110 ± 1587 |
2793 ± 4078 |
0.1405 |
Final parameters |
|
|
|
Implant depth (mm), median[IQR] |
14.4 [11.8-14.8] |
15
[11.8-15] |
0.1788 |
Bipolar Pacing Threshold (V)* |
1.2 ± 0.4 |
0.8 ± 0.4 |
0.0253 |
Sensing (mV), median[IQR] |
10 [7-14] |
7 [5-10] |
0.0615 |
Impedance (Ohm), mean ± SD |
645 ± 74 |
624 ± 101 |
0.4339 |
LBB potential, n(%) |
6 (60) |
7 (35) |
0.193 |
pQRSd (ms), median[IQR] |
116 [110-136] |
1120 [113-144] |
0.4018 |
pLVAT (ms), median[IQR] |
87 [72-100] |
73 [69-80] |
0.0577 |
LBB capture |
|
|
|
Non-selective, n(%) |
4 (40) |
6 (30) |
0.770 |
Selective, n (%) |
6 (60) |
14 (70) |
0.584 |