Table 2.
Intrinsic interventricular delays for different left ventricular electrodes
| N | Mean (SD) | Median (IQR) | |
|---|---|---|---|
| Intrinsic interventricular delay, ms | |||
| RVs-LV1s | 174 | 63 (47) | 73 (31-100) |
| RVs-LV2s | 174 | 66 (47) | 71 (33-101) |
| RVs-LV3s | 172 | 67 (49) | 76 (31-106) |
| RVs-LV4s | 140 | 71 (46) | 74 (43-105) |
| Maximum difference between excitations, ms | |||
| At LV1 and at any other LV electrode | 174 | 12 (21) | 11 (0-21) |
| At any 2 LV electrodes | 174 | 23 (18) | 18 (11-28) |
IQR = interquartile range; LV = left ventricular; LV1 to LV4 = 4 electrodes of quadripolar LV lead (see Figure 1); RV = right ventricular; s = sensed; SD = standard deviation.