Fluid balance in infants who were and were not exposed to antenatal steroids
| Antenatal steroids | Controls | p Value | |
|---|---|---|---|
| The fluid input reflects all fluid input—that is, both crystalloid and colloid. | |||
| Data are median (range) or number (%). | |||
| Gestational age (weeks) | 27.5 (23–33) | 27.5 (23–33) | >0.99 |
| Birth weight (g) | 971 (570–1500) | 892 (600–1498) | 0.97 |
| Caesarean section | 25 (52) | 20 (42) | 0.41 |
| Female | 25 (52) | 27 (46) | 0.84 |
| IWL (g) | |||
| Day 1 | 32 (0–126) | 51 (0–138) | 0.0135 |
| Day 2 | 19 (0–171) | 41 (0–147) | 0.436 |
| Fluid input (ml/kg) | |||
| Day 1 | 77 (38–191) | 76 (46–128) | 0.78 |
| Day 2 | 89 (39–146) | 86 (35–143) | 0.56 |
| Urine output (ml/kg) | |||
| Day 1 | 38 (4–105) | 22 (1–117) | 0.0036 |
| Day 2 | 89 (26–204) | 80 (0–148) | 0.264 |
| Urine osmolality (mOsm/l) | |||
| Day 1 | 191 (103–1443) | 235 (104–501) | 0.115 |
| Day 2 | 221 (104–501) | 234 (76–484) | 0.88 |
| Urine sodium (mmol/l) | |||
| Day 1 | 48 (9–139) | 56 (16–199) | 0.081 |
| Day 2 | 63 (13–158) | 64 (11–146) | 0.87 |
| Weight change by day 2 (% of birth weight) | −1.05 (−10.6 to 20.4) | +1.18 (−8.9 to 17.8) | 0.066 |