Table 3.
Ventricular and atrial late potentials
| Case | Ventricular late potential | Atrial late potential | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Before CIRT | After CIRT | Judgment before and after CIRT | Before CIRT | After CIRT | Judgment before and after CIRT | |||||||
| fQRS (ms) | LAS40 μV (ms) | RMS40 ms (μV) | fQRS (ms) | LAS40 μV (ms) | RMS40 ms (μV) | fPd (ms) | RMS20 ms (μV) | fPd (ms) | RMS20 ms (μV) | |||
| 1 | 88 | 31 | 38 | 86 | 29 | 37 | (−) → (−) | 126 | 1.4 | 114 | 7.6 | (+) → (−) |
| 2 | 95 | 35 | 26 | 87 | 30 | 82 | (−) → (−) | 127 | 4.3 | 128 | 7.0 | (−) → (−) |
| 3 | 102 | 45 | 10 | 93 | 37 | 22 | (+) → (+) | 148 | 2.8 | 139 | 6.8 | (+) → (−) |
| 4 | 107 | 40 | 19 | 101 | 33 | 24 | (+) → (−) | 116 | 24.3 | 123 | 4.5 | (−) → (−) |
| 5 | 108 | 35 | 24 | 103 | 26 | 20 | (−) → (−) | 127 | 9.2 | 119 | 13.5 | (−) → (−) |
| 6 | 82 | 19 | 127 | 87 | 27 | 84 | (−) → (−) | 150 | 0.4 | 147 | 2.0 | (+) → (+) |
| 7 | 79 | 29 | 68 | 84 | 30 | 86 | (−) → (−) | NA | NA | 119 | 3.9 | NA → (−) |
| 8 | 150 | 60 | 18 | 149 | 63 | 16 | (+) → (+) | 155 | 1.2 | 169 | 3.3 | (+) → (+) |
CIRT, carbon ion radiation therapy; fQRS, the filtered QRS duration; LAS40, the duration of terminal low‐amplitude signal <40 μV; RMS40, the root mean square voltage of the terminal 40 ms of the fQRS; fPd, the filtered P‐wave duration; RMS20, the root mean square voltage of the terminal 20 ms in the filtered P wave; (+), positive; (−), negative; NA, not available.