| [RESEARCH] Determination of pH or lactate in fetal scalp blood in management of intra -
25-05-2008, 06:20 PM
Objective To examine the effectiveness of pH analysis of fetal scalp blood compared with lactate analysis in identifying hypoxia in labour to prevent acidaemia at birth.
Design Randomised controlled multicentre trial.
Setting Labour wards.
Participants Women with a singleton pregnancy, cephalic presentation, gestational age ≥34 weeks, and clinical indication for fetal scalp blood sampling.
Interventions Standard pH analysis (n=1496) or lactate analysis (n=1496) with an electrochemical microvolume (5 µl) test strip device. The cut-off levels for intervention were pH 4.8 mmol/l, respectively.
Main outcome measure Metabolic acidaemia (pH 12 mmol/l) or pH | 
Linear Mode
