Phase‐rectified signal averaging for intrapartum electronic fetal heart rate monitoring is related to acidaemia at birth

Recent studies suggest that phase‐rectified signal averaging (PRSA), measured in antepartum fetal heart rate (FHR) traces, may sensitively indicate fetal status; however, its value has not been assessed during labour. We determined whether PRSA relates to acidaemia in labour, and compare its performance to short‐term variation (STV), a related computerised FHR feature.

[1]  J. Westgate,et al.  The intrapartum deceleration in center stage: a physiologic approach to the interpretation of fetal heart rate changes in labor. , 2007, American journal of obstetrics and gynecology.

[2]  M. Malik,et al.  Deceleration capacity of heart rate as a predictor of mortality after myocardial infarction: cohort study , 2006, The Lancet.

[3]  T. Schuster,et al.  Phase-rectified signal averaging as a new method for surveillance of growth restricted fetuses , 2012, The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.

[4]  M. Malik,et al.  Phase-rectified signal averaging detects quasi-periodicities in non-stationary data , 2006 .

[5]  Antoniya Georgieva,et al.  Relation of fetal heart rate signals with unassignable baseline to poor neonatal state at birth , 2012, Medical & Biological Engineering & Computing.

[6]  R. Morris,et al.  Strength of association between umbilical cord pH and perinatal and long term outcomes: systematic review and meta-analysis , 2010, BMJ : British Medical Journal.

[7]  Antoniya Georgieva,et al.  Computerized fetal heart rate analysis in labor: detection of intervals with un-assignable baseline , 2011, Physiological measurement.

[8]  Everett F. Magann,et al.  Intrapartum nonreassuring fetal heart rate tracing and prediction of adverse outcomes: interobserver variability. , 2008, American journal of obstetrics and gynecology.

[9]  Antoniya Georgieva,et al.  Umbilical cord gases in relation to the neonatal condition: the EveREst plot. , 2013, European journal of obstetrics, gynecology, and reproductive biology.

[10]  Steven M. Pincus,et al.  Approximate Entropy: A Regularity Measure for Fetal Heart Rate Analysis , 1992, Obstetrics and gynecology.

[11]  J. Westgate,et al.  Computerizing the Cardiotocogram (CTG) , 2009 .

[12]  The 2008 National Institute of Child Health and Human Development Workshop Report on Electronic Fetal Monitoring: Update on Definitions, Interpretation, and Research Guidelines , 2009 .

[13]  George A. Macones,et al.  Intrapartum fetal heart rate monitoring: nomenclature, interpretation, and general management principles , 2009 .

[14]  Pincus Sm,et al.  Approximate Entropy: A Regularity Measure for Fetal Heart Rate Analysis , 1992, Obstetrics and gynecology.

[15]  G Schmidt,et al.  New computerized fetal heart rate analysis for surveillance of intrauterine growth restriction , 2011, Prenatal diagnosis.

[16]  M. Moulden,et al.  A computer system for the numerical analysis of nonstress tests. , 2002, American journal of obstetrics and gynecology.

[17]  C. Spong,et al.  The 2008 National Institute of Child Health and Human Development workshop report on electronic fetal monitoring: update on definitions, interpretation, and research guidelines. , 2008, Obstetrics and gynecology.

[18]  Georg Schmidt,et al.  Bivariate phase-rectified signal averaging--a novel technique for cross-correlation analysis in noisy nonstationary signals. , 2009, Journal of electrocardiology.