Study No | Time of EEG recording (hours from birth) | EEG seizure (n) | EEG seizure (s) | Mean EEG seizure duration (s) | Video recorded clinical seizure (n) | Video recorded clinical seizure (s) | Mean video seizure duration (s) | Description | |||
1 | 20–49.3 | 17 | 1380 | 86 | 2 | 133 | 66 | Staring, eye deviation | |||
2 | 14–58* | 56 | 4668 | 41 | 45 | 662 | 14.7 | Yawning, blinking, multifocal clonic | |||
3 | 18–69 | 64 | 19 492 | 291 | 16 | 2935 | 183 | Mouthing, multifocal clonic | |||
4 | 3.5–23 | 42 | 3115 | 69 | 20 | 946 | 47.3 | Apnoea, irregular resps, clonic jerks LUL | |||
5 | 4–59† | 34 | 3213 | 95 | 9 | 713 | 79.2 | LLL clonic, occasionally RLL and LUL | |||
6 | 22–88 | 56 | 6223 | 118 | 11 | 1315 | 119.5 | Mouthing, yawning, multifocal clonic | |||
7 | 26–74 | 14 | 4636 | 346 | 5 | 210 | 42 | LUL clonic jerks, rhythmic head jerking | |||
8 | 20–87 | 205 | 61 122 | 311 | 60 | 13 921 | 232 | Tonic ULs, staring, multifocal clonic | |||
9 | 12–78‡ | 38 | 9138 | 317 | 11 | 368 | 33.4 | Multifocal clonic | |||
10 | 3–67 | 0 | 0 | 0 | 0 | 0 | 0 | Clonus, tremors, staring, apnoea | |||
11 | 4.5–36.5 | 0 | 0 | 0 | 0 | 0 | 0 | Clonus, generalised jerking all four limbs | |||
12 | 5.5–36 | 0 | 0 | 0 | 0 | 0 | 0 | Clonus, jerking all four limbs on handling, apnoea | |||
Total | 526 | 112 987 | 215 | 179 | 21 203 | 118 |
Cases 10–12 were infants with clinically suspected seizures, but no electrographic seizures.
*Video obscured by blanket for additional 18 electrographic seizures.
†Portions of video lost through technical difficulties; unable to view an additional 139 electrographic seizures.
‡Video obscured for two additional electrographic seizures.
LLL, left lower limb; LUL, left upper limb; RLL, right lower limb; ULs, upper limbs.