Table 3.
Changes in processed electroencephalography-derived parameters during cooling and rewarming.
| Change per 1°C change in temperature | 95% CI | F statistics | p-value | |
|---|---|---|---|---|
| Cooling | ||||
| PSI | −0.84 | −0.99 to −0.68 | F(1, 193.4) = 111.1 | <0.001 |
| SR | 2.9 | 2.3–3.4 | F(1, 315.2) = 104.6 | <0.001 |
| SEF, R (Hz) | −0.18 | −0.24 to −0.12 | F(1, 683.7) = 34.7 | <0.001 |
| SEF, L (Hz) | −0.22 | −0.28 to −0.16 | F(1, 333.0) = 47.5 | <0.001 |
| Rewarming | ||||
| PSI | 0.70 | 0.60–0.81 | F(1, 27.1) = 194.4 | <0.001 |
| SR | −2.2 | −2.7 to −1.7 | F(1, 188.5) = 85.4 | <0.001 |
| SEF, R (Hz) | 0.18 | 0.10–0.26 | F(1, 210.2) = 19.3 | <0.001 |
| SEF, L (Hz) | 0.28 | 0.21–0.36 | F(1, 215.7) = 50.3 | <0.001 |
CI, confidence interval; PSI, patient state index; SEF, R, spectral edge frequency, right cerebral hemisphere; SEF, L, spectral edge frequency, left cerebral hemisphere; SR, suppression ratio.