Table 4 Detailed EEG in patients with encephalitis/encephalopathy
Number | Gender | Age (year) | Diagnosis | Presence of status epilepticus | Fever | Number of seizures | Form of seizure | History of neurological illness | Antiseizure medicine before EEG | Background waves | Abnormal discharges | Neurologic sequelae at discharge |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Female | 8.8 | Viral encephalitis | None | Yes | 7 | Focal clinical | None | PB | 4-6 Hz | Frequent occipital and posterior temporal sharp (slow) and slow waves during waking and sleeping periods (notably during sleep, predominantly in the right posterior temporal region) | None |
2 | Female | 2.3 | Severe viral encephalitis | Yes | Yes | 7 | Generalized clinical | None | PB、LEV | 1.5-3 Hz | None | Language barrier and dystonia: there was no verbal response and low muscle tone in the extremities |
3 | Male | 8.7 | Anti-N-methyl-D-aspartate receptor encephalitis | None | Yes | 1 | Focal clinical | None | None | 2.5-7 Hz | None | Language barrier: language nonsense |
4 | Female | 11.6 | Acute encephalopathy syndrome | None | Yes | 1 | Generalized clinical | None | None | 1.5-9 Hz; Typical sleep spindle and top wave deficits, with unclassifiable sleep cycles | Multiple discharges of α and θ rhythms in the prefrontal, frontal, central, anterior temporal regions or in the full leads during wakefulness and sleep | Dystonia: slightly high muscle tone in the right upper limb |