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Objective To assess the potential clinical value of fetal electrocardiographic (ECG) monitoring in labour. Design Descriptive study of the use of ECG waveform analysis during labour and its correlation with other indices of fetal and neonatal well‐being. Setting Teaching hospital in Oxford. Subjects 86 high risk pregnancies. Main outcome measures Suitability of ST Segment Analyser (Cinventa, Sweden) for clinical use; relation between the T/QRS ratio during labour (an index of ST segment and T wave elevation) and intrapartum cardiotocography, umbilical artery pH at birth and Apgar scores; T/QRS ratio trends in labour. Results The system was robust and user‐friendly. No statistically significant relation was found between T/QRS ratios in labour and FHR abnormalities in the cardiotocograph. There was a weak relation between T/QRS ratios and umbilical artery acidosis: at a cervical dilatation of 4 cm, the Spearman rank correlation of the mean T/QRS ratio with umbilical artery actual base deficit was r =−0.31, 0.05

Original publication




Journal article


BJOG: An International Journal of Obstetrics & Gynaecology

Publication Date





32 - 37