Table 2.
Short EEG findings prior to cEEG monitoring
| Frequencies of RPP and NCS-NCSE | N | % | |
|---|---|---|---|
| PD | 13 | 22.8 | |
| RSW | 1 | 1.8 | |
| RDA | 1 | 1.8 | |
| NCS-NCSE | 4 | 7 | |
| Clinical seizures | 3 | 5.3 | |
| Findings of background activity | N | % | |
| Symmetry | Symmetrical | 38 | 66.7 |
| Asymmetrical | 19 | 33.3 | |
| Frequency | Theta | *47 | 82.5 |
| Delta | 9 | 15.8 | |
| Alpha | 8 | 14 | |
| Suppression | Symmetrical | 6 | 10.5 |
| Asymmetrical | 8 | 14 | |
| Rapid rhythms | 8 | 14 | |
| Nonspecific slow wave activity | 21 | 36.8 | |
| Focal epileptiform anomaly | 2 | 3.5 | |
NCS: nonconvulsive seizures; NCSE: nonconvulsive status epilepticus; PD: periodic discharge; RPP: rhythmic and periodic pattern; RDA: rhythmic delta activity; RSW: rhythmic spike waves
*
In this group, four patients had also alpha activities, and three patients had also delta activities