Table 2.
Summary of EEG studies of FGR/SGA neonates.
| Study | EEG channel | Popn (N) | Mean GA | PMA of EEG | SWC | Relative delta power | Bursts | ASYM and ASYNC | Amplitude |
|---|---|---|---|---|---|---|---|---|---|
| Castro Conde et al., 2020 | 10–20 system | t-SGA (50) | 37.7 ± 1.7 weeks | 48–72 h of life |
↓TA: 26%**, ↑D: 38%** |
↓~48%** |
↑DB: 24%**, ↑IBIm = 7 s**, ↑T/h = 18** |
↑ASYM 12%**, ↑ASYNC 11%** |
|
| t-AGA (44) | 38.1 ± 2.0 weeks |
TA: 52%, D: 6% |
~50% |
DB: 6%, IBIm: 3 s, T/h: 8 |
ASYM 3%, ASYNC 5% |
||||
| Ozdemir et al., 2009 | 10–20 system | t-SGA (40) | 39.4 ± 0.8 | First week of life | ↓84%* at CzC4 | ↓27.7*** | |||
| t-AGA (20) | 39.7 ± 0.7 | 88% | 63.4 | ||||||
| Yerushalmy-Feler et al., 2014 | (C3–C4) | p-FGR (14) | 34.3 ± 1.8 weeks | Within first 48 h life | 50% present | ↑86% ± 3** | |||
| p-AGA (16) | 33.7 ± 2 weeks | 31% present | 79% ± 5 |
↑ increased, ↓ decreased in FGR/SGA in comparison to AGA.
GA gestational age, PMA postmenstrual age, SWC sleep–wake cycle, TA trace alternant, D discontinuity, DB bursts with delta brushes, IBIm maximum interburst interval, T/h transients/bursts per hour, ASYM asymmetry, ASYNC asynchrony, prefix t term, prefix p preterm.
*p < 0.05; **p < 0.01; ***p < 0.001.