Table 6 pH values, PCO2 und base excess (BE) obtained from fetal blood analysis (FBA) and recommended procedures (modified after FIGO).
| Fetal blood analysis (FBA)* | Recommended procedure |
|---|---|
| * All measurements of fetal blood should be interpreted to take account of the initial pH value, the metabolism, the progress of labor and other clinical findings of the fetus and mother. | |
| pH ≥ 7.25 | If FHR abnormality persists, FBA should be repeated after an interval of 30 minutes. |
| pH 7.21–7.24 | FBA should be repeated after an interval of 30 minutes or rapid delivery of the fetus should be considered (if pH value has dropped quickly since the last measurement). |
| pH ≤ 7.20PCO2 > 65 mmHg (acidosis)BE > −9.8 (e.g. −15) mmol/l (metabolic acidosis) | Quick delivery of the fetus is indicated, particularly if metabolic acidosis is present. |