Haemoglobin concentration (mean (SD)), Sao 2, (median (IQR)), FOE (mean (SD)), and arterial oxygen content (mean (SD)) in cyanosed and non-cyanosed patients at the start of bypass
| Before bypass (n = 8) | Bypass (n = 22) | ||
|---|---|---|---|
| Haemoglobin (g/dl) | |||
| Cyanosed | 16.0 (1.9) | 10.1 (1.6) | p=0.014-150 |
| Non-cyanosed | 12.0 (1.2) | 8.8 (1.9) | p=<0.014-150 |
| Sao 2(%) | |||
| Cyanosed | 87 (75–88) | 98 (98–99) | p=<0.001† |
| Non-cyanosed | 98 (97–98) | 100 (99–100) | p=<0.001† |
| Cerebral FOE | |||
| Cyanosed | 0.248 (0.10) | 0.388 (0.16) | p=0.0014-150 |
| Non-cyanosed | 0.404 (0.11) | 0.410 (0.10) | p=0.674-150 |
| Arterial oxygen content (ml/l) | |||
| Cyanosed | 1.8 (2.5) | 1.4 (2.1) | p=0.0024-150 |
| Non-cyanosed | 1.6 (1.7) | 1.2 (2.5) | p<0.0014-150 |
↵4-150 Refers to paired t tests. † Refers to Wilcoxon’s rank sum tests.