Approximate entropy of fetal heart rate variability as a predictor of fetal distress in women at term pregnancy

Background.  The aim of this study is to investigate the relationship between approximate entropy (ApEn) of fetal heart rate (FHR) with umbilical blood gas parameters and the power spectrum of FHR variability in Chinese and to test whether ApEn of FHR variability could be used as a predictor of fetal distress in women at term pregnancy.

[1]  K. Williams,et al.  The Correlation of Seizures in Newborn Infants With Significant Acidosis at Birth With Umbilical Artery Cord Gas Values , 2002, Obstetrics and gynecology.

[2]  S. Siira,et al.  Periodic spectral components of fetal heart rate variability reflect the changes in cord arterial base deficit values: a preliminary report. , 2001, Early human development.

[3]  S. Pincus,et al.  Assessing sequential irregularity of both endocrine and heart rate rhythms. , 1998, Current opinion in obstetrics & gynecology.

[4]  P. Magrez,et al.  Diagnosis of severe birth asphyxia and early prediction of neonatal neurological outcome in term asphyxiated newborns , 1994, Journal of perinatal medicine.

[5]  E. Lumbers,et al.  Effects Of Birth On Baroreceptor‐Mediated Changes In Heart Rate Variability In Lambs And Fetal Sheep , 2002, Clinical and experimental pharmacology & physiology.

[6]  Power spectrum analysis of heart rate and blood flow velocity variability measured in the umbilical and uterine arteries in early pregnancy: a comparative study , 2001, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

[7]  G S Dawes,et al.  Approximate Entropy, a Statistic of Regularity, Applied to Fetal Heart Rate Data Before and During Labor , 1992, Obstetrics and gynecology.

[8]  E. Lumbers,et al.  Measurement of Baroreceptor-Mediated Effects on Heart Rate Variability in Fetal Sheep , 2000, Pediatric Research.

[9]  M. Ross,et al.  Use of umbilical artery base excess: algorithm for the timing of hypoxic injury. , 2002, American journal of obstetrics and gynecology.

[10]  Late Second-Trimester Nonstress Test Characteristics in Preterm Delivery before 32 Weeks of Gestation , 2001, Gynecologic and Obstetric Investigation.

[11]  Decreased Approximate Entropy of Heart Rate Variability in the Hypoxic Ovine Fetus , 1998, Journal of maternal-fetal investigation : the official journal of French Society of Ultrasound in Medicine and Biology ... [et al.].

[12]  Problems with intrapartum fetal heart rate monitoring interpretation and patient management. , 2002, Obstetrics and gynecology.

[13]  M. T. Verklan.  Physiologic Variability during Transition to Extrauterine Life , 2002, Critical care nursing quarterly.

[14]  L. Groome,et al.  Spectral analysis of heart rate variability during quiet sleep in normal human fetuses between 36 and 40 weeks of gestation. , 1994, Early human development.

[15]  T. Buchman.  The community of the self , 2002, Nature.

[16]  T Suzuki,et al.  Power spectral analysis for autonomic influences in heart rate and blood pressure variability in fetal lambs. , 1996, The American journal of physiology.

[17]  S. Min,et al.  Power spectral analysis of heart rate variability during acute hypoxia in fetal lambs , 2002, Acta obstetricia et gynecologica Scandinavica.

[18]  C. Wood.  The ovine fetal endocrine reflex responses to haemorrhage are not mediated by cardiac nerves , 2002, The Journal of physiology.

[19]  G.E. Birch,et al.  Application of prewhitening to AR spectral estimation of EEG , 1988, IEEE Transactions on Biomedical Engineering.

[20]  Munhyang Lee,et al.  Effects of hyperglycemia or hypoglycemia on brain cell membrane function and energy metabolism during the immediate reoxygenation–reperfusion period after acute transient global hypoxia–ischemia in the newborn piglet , 2001, Brain Research.

[21]  Solange Akselrod,et al.  Development and Maturation of the Autonomic Nervous System in Premature and Full-Term Infants Using Spectral Analysis of Heart Rate Fluctuations , 1995, Pediatric Research.

[22]  T. Buchman,et al.  Shock at the millennium II. Walter B. Cannon and Lawrence J. Henderson. , 2001, Shock.

[23]  H. Kitano.  Systems Biology: A Brief Overview , 2002, Science.

[24]  T Suzuki,et al.  Power spectral analysis of R-R interval variability before and during the sinusoidal heart rate pattern in fetal lambs. , 2000, American journal of obstetrics and gynecology.

[25]  Niels-Henrik Holstein-Rathlou,et al.  Approximate entropy and point correlation dimension of heart rate variability in healthy subjects , 1998, Integrative physiological and behavioral science : the official journal of the Pavlovian Society.

[26]  S. Emery,et al.  Dynamic analysis of beat-to-beat fetal heart rate variability recorded by SQUID magnetometer: quantification of sympatho-vagal balance. , 2002, Early human development.

[27]  S. Porges,et al.  A neural explanation of fetal heart rate patterns: A test of the polyvagal theory. , 1999, Developmental psychobiology.

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

[29]  J. Challis,et al.  Relationship between blood gas values and hormonal response to acute hypoxemia in fetal sheep. , 1990, Gynecologic and obstetric investigation.

[30]  N. Berkane,et al.  [Acid base balance in the fetus during labor: pathophysiology and exploration methods]. , 2003, Journal de gynecologie, obstetrique et biologie de la reproduction.

[31]  J. Low,et al.  Predictive value of electronic fetal monitoring for intrapartum fetal asphyxia with metabolic acidosis. , 1999, Obstetrics and gynecology.

[32]  The effect of carotid sinus denervation on fetal heart rate variation in normoxia, hypoxia and post‐hypoxia in fetal sheep , 1997, British journal of obstetrics and gynaecology.

[33]  L. Shen,et al.  Redistribution of power spectrum of heart rate variability during acute umbilical artery embolism and hypoxemia in late-gestation fetal sheep. , 2004, European journal of obstetrics, gynecology, and reproductive biology.