Table 5.
Lead Measurements and Battery status
| Follow-up | |||||
|---|---|---|---|---|---|
|
Parameter |
1stFU (n = 30) |
2ndFU (n = 30) |
3rdFU (n = 29) |
4thFU (n = 29) |
p = * |
| Time from MRI (months) |
- |
- |
1.1 ± 0.3 |
3.0 ± 0.3 |
|
| RA sensing (mV) |
3.2 ± 2.1 |
3.2 ± 2.3 |
3.2 ± 2.1 |
3.1 ± 2.0 |
n.s. |
| RA pacing threshold (V@0,4 ms) |
0.68 ± 0.18 |
0.67 ± 0.16 |
0.71 ± 0.24 |
0.73 ± 0.15 |
n.s. |
| RA pacing impedance (Ohms) |
507 ± 55 |
500 ± 46 |
520 ± 50 |
495 ± 59 |
n.s. |
| RV sensing (mV) |
15.0 ± 6.0 |
15.0 ± 6.0 |
14.9 ± 6.5 |
14.7 ± 6.3 |
n.s. |
| RV pacing threshold (V@0,4 ms) |
0.78 ± 0.22 |
0.79 ± 0.20 |
0.78 ± 0.22 |
0.82 ± 0.24 |
n.s. |
| RV pacing impedance (Ohms) |
608 ± 54 |
599 ± 52+ |
607 ± 47 |
597 ± 57 |
n.s. |
| Battery status (%) |
100 ± 0 |
100 ± 0 |
100 ± 0 |
99.7 ± 1.3 |
n.s. |
|
Value changes (% [median]; compared with pre MRI FU) |
|
|
|
|
|
| RA sensing |
|
−2 ± 20 [0] |
+6 ± 43 [0] |
+15 ± 57 [8] |
|
| RA PTH |
|
+2 ± 23 [0] |
+2 ± 30 [0] |
+9 ± 7 [0] |
|
| RA Pimp |
|
−1 ± 4 [0] |
+3 ± 6 [4] |
−2 ± 11 [0] |
|
| RV sensing |
|
−1 ± 6 [−1] |
−2 ± 12 [−2] |
−4 ± 14 [−1] |
|
| RV PTH |
|
+2 ± 8 [0] |
0 ±12 [0] |
7 ± 24 [0] |
|
| RV PImp |
|
−2 ± 2 [−2] |
0 ± 6 [0] |
−2 ± 7 [0] |
|
| Battery status | 0 ± 0 [0] | 0 ± 0 [0] | 0 ± 1 [0] | ||
Grey columns: relevant FUs for endpoint calculation.
*Oneway ANOVA.
+p < 0.05 when comparing with pre MRI values (paired t-test).