Sensitivity and specificity of intrapartum computerised FIGO criteria for cardiotocography and fetal scalp pH during labour: multicentre, observational study
Article first published online: 26 AUG 2008
© 2008 Authors Journal compilation © RCOG 2008 BJOG An International Journal of Obstetrics and Gynaecology
BJOG: An International Journal of Obstetrics & Gynaecology
Volume 115, Issue 12, pages 1557–1563, November 2008
How to Cite
Schiermeier, S., Pildner von Steinburg, S., Thieme, A., Reinhard, J., Daumer, M., Scholz, M., Hatzmann, W. and Schneider, K. (2008), Sensitivity and specificity of intrapartum computerised FIGO criteria for cardiotocography and fetal scalp pH during labour: multicentre, observational study. BJOG: An International Journal of Obstetrics & Gynaecology, 115: 1557–1563. doi: 10.1111/j.1471-0528.2008.01857.x
- Issue published online: 13 OCT 2008
- Article first published online: 26 AUG 2008
- Accepted 17 June 2008. Published OnlineEarly 26 August 2008.
- computer analysis;
- fetal heart rate;
- fetal heart rate analysis;
- intrapartum monitoring;
- neonatal acidaemia
Objective To identify sensitivity and specificity of computerised cardiotocography (CTG) analysis for fetal acidosis during delivery.
Design Retrospective observational study.
Setting Tertiary referral labour ward, Technical University München (TUM) and University Witten/Herdecke (UWH).
Population All deliveries, which had at least one fetal scalp pH measurement and electronically saved CTG traces, between 2000 and 2002 (TUM) and between 2004 and 2005 (UWH).
Method Correlation analysis of fetal scalp pH values and computerised International Federation of Obstetrics and Gynecology (FIGO) classification using ‘CTG Online®’ program of digitally saved CTG traces.
Main outcome measures Fetal scalp pH values, FIGO parameter (baseline, variability, acceleration and deceleration) using computerised analysis.
Results Both collectives showed a high sensitivity (95.0%) for computerised FIGO classification ‘suspect’ and ‘pathological’, together with a low specificity (21.8%) for fetal acidosis. The most sensitive single FIGO parameter was deceleration. Very low sensitivity (<50%) was shown for the parameters variability and acceleration.
Conclusions Computerised CTG analysis is highly sensitive for fetal acidosis and can be used as an objective adjunctive criterion during delivery. Further CTG data are needed to adjust and optimise each FIGO parameter and increase sensitivity and specificity.