Redox status of plasma ascorbic acid before and after blood transfusion in preterm and full term infants
| AA (μM) | DHAA (μM) | DHAA/AA (%) | |
| Preterm infants (n=21) | |||
| Before | 56.4 (13.3–197.8) | 1.3 (0.0–17.5) | 2.8 (0.0–11.3) |
| After | 44.6 (12.7–191.5) | 2.6 (0.0–26.0) | 6.0 (0.0–24.7) |
| Changes | −2.5 (−39.1–70.0) | 1.0 (−0.2–19.6) | 3.5 (−0.7–21.9) |
| p Value4-150 | 0.042 | 0.010 | 0.005 |
| Full term infants (n=6) | |||
| Before | 57.4 (40.5–70.8) | 2.3 (1.9–4.9) | 4.6 (3.6–8.6) |
| After | 57.0 (27.7–70.6) | 4.3 (2.0–6.8) | 9.7 (3.2–11.6) |
| Changes | −4.8 (−12.8–25.7) | 1.5 (−2.9–4.8) | 3.9 (−3.7–6.9) |
| p Value4-150 | 0.463 | 0.208 | 0.116 |
Data are expressed as the median (range). The changes during blood transfusion were calculated by subtracting the values before transfusion from those after.
↵4-150 Values obtained before and after transfusion were compared by the Wilcoxon signed rank test.
AA, Ascorbic acid; DHAA, dehydroascorbic acid.