Table 4. Effects of Cerebral Oxygen Saturation (rSO2) Variables on Psychomotor Development Index of the Bayley Scales of Infant Development.
| Psychomotor Development Index (N = 89*) Linear Regression Beta Coefficient (P value) |
|||
|---|---|---|---|
| rSO2 Predictor Variable | Adjusting for Social Class | Adjusting for Age ≤ 30 Days and Social Class | Adjusting for Age ≤ 30 Days, Diagnosis Group, and Social Class |
| Integrated rSO2 ≤ 45% (min%) | |||
| 0 | 0 | 0 | 0 |
| 0.3-39 | −2.9 (0.58) | −2.0 (0.70) | −0.7 (0.90) |
| 60-383 | −2.3 (0.67) | −3.5 (0.53) | −2.1 (0.70) |
| Integrated rSO2 ≤ 45% (per min%) | −0.043 (0.15) | −0.052 (0.08) | −0.047 (0.12) |
| Postinduction − 60-min post-CPB | |||
| Average rSO2 (per %) | 0.44 (0.04) | 0.38 (0.09) | 0.23 (0.22) |
| Minimum rSO2 | 0.24 (0.13) | 0.25 (0.11) | 0.21 (0.20) |
| Onset last rewarming – off-CPB | |||
| Average rSO2 | 0.24 (0.13) | 0.12 (0.60) | 0.03 (0.91) |
| Minimum rSO2 | 0.17 (0.24) | 0.03 (0.86) | −0.01 (0.98) |
| Off-CPB – 60 min post-CPB | |||
| Average rSO2 | 0.38 (0.01) | 0.35 (0.02) | 0.32 (0.04) |
| Minimum rSO2 | 0.31 (0.02) | 0.27 (0.053) | 0.24 (0.09) |
| rSO2 10 min after cooling | 0.43 (0.03) | 0.37 (0.07) | 0.31 (0.15) |
| rSO2 Off-CPB | 0.34 (0.02) | 0.33 (0.06) | 0.29 (0.09) |
| rSO2 60 min post-CPB | 0.32 (0.02) | 0.30 (0.03) | 0.28 (0.045) |
*
N = 89, except N = 88 for postinduction − 60 min post-CPB, off CPB − 60 min post-CPB, and 60 min post-CPB regressions.