Table 2 Scalp lactate, UCBG and Apgar score < 7 at 5 min in 385 women with need of FBS during delivery. The cohort is divided by time from FBS to delivery and in positive and negative test results i.e. no versus an acceleration on CTG at FBS. The UCBG are not shown for women with ≥60 min from FBS to delivery. Medians with [range]
| Â | No acceleration (Positive test) | Acceleration (Negative test) | p value |
|---|---|---|---|
FBS to delivery ≤ 20 min (n = 128) | 108 | 20 |  |
Scalp lactate mmol/L | 4.2 [1.6–7.7] | 4.4 [1.9–7.0] | 0.66 |
pH | 7.2 [6.99–7.34] | 7.2 [7.06–7.31] | 0.790 |
A-pCO2 (kPa) | 7.48 [4.68–13.6] | 8.12 [5.18–10.2] | 0.408 |
A-BE | −6.8 [−17–0.8] | −6.1 [− 12-(− 2)] | 0.829 |
A-lactate mmol/L | 7.5 [3.6–12] | 6.3 [4.5–9.1] | 0.748 |
5 min AS < 7 | 3 | 0 | NA |
FBS to delivery 21–59 min (n = 117) | 69 | 48 |  |
Scalp lactate mmol/L | 3.2 [1.1–6.8] | 2.3 [1.0–6.4] | 0.012 |
pH | 7.23 [7.04–7.32] | 7.22 [6.99–7.35] | 1.00 |
A-pCO2 (kPa) | 7.31 [4.38–11] | 7.88 [5.09–11.1] | 0.472 |
A-BE | −5.95 [−17–1.4] | −4.15 [−10.8–7.3] | 0.044 |
A-lactate mmol/L | 5 [2.6–10.0] | 6.5 [2.9–8.9] | 0.609 |
5 min AS < 7 | 2 | 0 | NA |
FBS to delivery ≥ 60 min (n = 140) | 68 | 72 |  |
Scalp lactate mmol/L | 2.1 [1–5] | 2.1 [1.1–4.2] | 0.911 |