Table 4.
Changes in ECG parameters after HD (ECG before HD-ECG after HD).
| Variable | Survivor (n = 387) | SCD (n = 39) | p-Value |
|---|---|---|---|
| QT interval (ms) | −6 (−36, 26) | 38 (−25, 84) | 0.963 |
| QTc interval (ms) | −8.5 (−32, 12) | 1 (−13.5, 58) | 0.937 |
| Dispersion of QT (ms) | 4.3 (−13.9, 27.8) | 32 (1, 48) | 0.02 |
| QT Peak-end interval (ms) | |||
| II | 8 (−9.4, −71.2) | 112 (82, 128) | <0.001 |
| III | 12 (−8, 69.4) | 96 (66, 140) | <0.001 |
| aVF | 12 (−8, 61.8) | 132 (96, 142) | <0.001 |
| V1 | 8 (−12, 64.4) | 140 (98.0−150) | <0.001 |
| V2 | 12 (−8, 63) | 140 (94, 168) | <0.001 |
| V3 | 8.7 (−8, 70.2) | 152 (114, 186) | <0.001 |
| V4 | 8 (−10, 64.7) | 140 (80, 164) | <0.001 |
| V5 | 12 (−9.2, 96.6) | 160 (142, 176) | <0.001 |
| V6 | 12 (−4.2, 66.2) | 152 (90, 174) | <0.001 |
Values are expressed as medians (interquartile range); ECG, electrocardiography; HD, hemodialysis; SCD, sudden cardiac death.