Oxytocin infusion rates | |||||
---|---|---|---|---|---|
2.5 IU/h (n = 25) | 5.0 IU/h (n = 25) | 7.5 IU/h (n = 24) | 10.0 IU/h (n = 25) | P value | |
Hypertension | 0 (0) | 0 (0) | 1(4) | 2 (8) | 0.068 |
Hypotension | 5 (20) | 5 (20) | 5 (21) | 3 (12) | 0.502 |
Bradycardia | 0 (0) | 1 (4) | 2 (8) | 1 (4) | 0.361 |
Nausea | 2 (8) | 0 (0) | 1 (4) | 1 (4) | 0.658 |
Flushing | 2(8) | 1(4) | 2 (8) | 3 (12) | 0.505 |
Shivering | 0 (0) | 0 (0) | 0 (0) | 1 (4) | 0.180 |
Chest pain | 1 (4) | 0 (0) | 1 (4) | 1(4) | 0.995 |
1-min Apgar score | 9 (9–10) | 9 (9–10) | 10 (9–10) | 10 (9–10) | 0.527 |
5-min Apgar score | 10 (10–10) | 10 (10–10) | 10 (10–10) | 10 (10–10) | 0.899 |
Umbilical arterial pH | 7.31(7.28–7.35) | 7.31(7.29–7.35) | 7.31(7.28–7.33) | 7.31(7.29–7.34) | 0.989 |
Umbilical arterial PO2 | 20.8 ± 4.7 | 20.4 ± 6.3 | 22.7 ± 7.0 | 23.0 ± 7.8 | 0.384 |
Umbilical arterial PCO2 | 45.6 ± 8.6 | 47.8 ± 6.8 | 50.4 ± 10.5 | 51.6 ± 11.1 | 0.107 |
Umbilical arterial BE | −2.1(−6.0 - -1.0) | −2.2(−5.6 - -0.6) | −0.9(−4.1–0.4) | −1.2(− 2.5–0.7) | 0.131 |
Umbilical arterial HCO3− | 23.3 (18.5–25.0) | 24.3 (19.5–26.0) | 26.0 (22.5–27.4) | 25.6 (22.9–27.1) | 0.061 |
Neonatal weight, g | 3276 ± 279 | 3330 ± 380 | 3317 ± 321 | 3424 ± 267 | 0.403 |