Fetal heart rate variability changes during brief repeated umbilical cord occlusion in near term fetal sheep

Objective To determine whether changes in fetal heart rate variation during repeated umbilical cord occlusions reflect evolving cardiovascular compromise in near term fetal sheep.

[1]  A. Gunn,et al.  Brief Repeated Umbilical Cord Occlusions Cause Sustained Cytotoxic Cerebral Edema and Focal Infarcts in Near-Term Fetal Lambs , 1997, Pediatric Research.

[2]  A. Gunn,et al.  Fetal heart rate changes do not reflect cardiovascular deterioration during brief repeated umbilical cord occlusions in near-term fetal lambs. , 1997, American journal of obstetrics and gynecology.

[3]  J. Parer,et al.  Increased fetal heart rate variability with acute hypoxia in chronically instrumented sheep. , 1980, European journal of obstetrics, gynecology, and reproductive biology.

[4]  R. Cohen,et al.  Hemodynamic regulation: investigation by spectral analysis. , 1985, The American journal of physiology.

[5]  J. Keogh,et al.  The intrapartum CTG prior to neonatal encephalopathy at term: a case‐control study , 1997, British journal of obstetrics and gynaecology.

[6]  Bruce A Smith,et al.  Role of Sympathetic Activity in the Generation of Heart Rate and Arterial Pressure Variability in Fetal Sheep , 1994, Pediatric Research.

[7]  THE SIGNIFICANCE OF THE CHANGES IN THE CONTINUOUS FETAL HEART RATE IN THE FIRST STAGE OF LABOUR , 1971, The Journal of obstetrics and gynaecology of the British Commonwealth.

[8]  K J Dalton,et al.  Diurnal, respiratory, and other rhythms of fetal heart rate in lambs. , 1977, American journal of obstetrics and gynecology.

[9]  Fetal heart rate variability and cerebral oxygen consumption in fetal sheep during asphyxia. , 1991, European journal of obstetrics, gynecology, and reproductive biology.

[10]  J. R. Huey Monitoring of uterine activity. , 1979, Clinics in obstetrics and gynaecology.

[11]  A. Gunn,et al.  Transient umbilical cord occlusion causes hippocampal damage in the fetal sheep. , 1992, American journal of obstetrics and gynecology.

[12]  Fetal heart rate patterns and the timing of fetal injury. , 1994, Journal of perinatology : official journal of the California Perinatal Association.

[13]  I. Timor-Tritsch,et al.  EFFECT OF ACUTE HYPOXIA ON HUMAN FETAL HEART RATE , 1985, Acta obstetricia et gynecologica Scandinavica.

[14]  A. Samueloff,et al.  Is fetal heart rate variability a good predictor of fetal outcome? , 1994, Acta obstetricia et gynecologica Scandinavica.

[15]  V. Brotánek,et al.  Changes in uterine blood flow during uterine contractions. , 1969, American journal of obstetrics and gynecology.

[16]  Goodlin Rc,et al.  A functional umbilical cord occlusion heart rate pattern. The significance of overshoot. , 1974 .

[17]  T. Olsson,et al.  Heart rate variability and electrocardiogram changes in the fetal lamb during hypoxia and beta-adrenoceptor stimulation , 1984, Journal of perinatal medicine.

[18]  G S Dawes,et al.  The advantages of computerized fetal heart rate analysis , 1991, Journal of perinatal medicine.

[19]  R. Gagnon,et al.  Fetal placental embolization in the late-gestation ovine fetus: alterations in umbilical blood flow and fetal heart rate patterns. , 1996, American journal of obstetrics and gynecology.

[20]  K J Dalton,et al.  The autonomic nervous system and fetal heart rate variability. , 1983, American journal of obstetrics and gynecology.

[21]  K. G. Rosen,et al.  Fetal cerebral, cardiovascular and metabolic reactions to intermittent occlusion of ovine maternal placental blood flow. , 1986, Acta physiologica Scandinavica.

[22]  R. Goodlin,et al.  A Functional Umbilical Cord Occlusion Heart Rate Pattern: The Significance of Overshoot , 1974, Obstetrics and gynecology.

[23]  G. Liljestrand,et al.  The Effect of Carotid Sinus Denervation on Respiration during Rest , 1940 .

[24]  H. Sandmire,et al.  Electronic fetal heart rate monitoring: research guidelines for interpretation. , 1998, American journal of obstetrics and gynecology.

[25]  D. Skupski,et al.  Cesarean Delivery for Intrapartum Fetal Heart Rate Abnormalities: Incorporating Survey Data Into Clinical Judgment , 1996, Obstetrics and gynecology.

[26]  L. Bennet,et al.  Angiotensin II and cardiovascular chemoreflex responses to acute hypoxia in late gestation fetal sheep , 1998, The Journal of physiology.

[27]  E H Hon,et al.  Clinical fetal monitoring. VII. The evaluation and significance of intrapartum baseline FHR variability. , 1975, American journal of obstetrics and gynecology.

[28]  E. V. Syutkina Effect of autonomic nervous system blockade and acute asphyxia on heart rate variability in the fetal rat. , 1988, Gynecologic and obstetric investigation.

[29]  G S Dawes,et al.  Short–Term Fetal Heart Rate Variation, Decelerations, and Umbilical Flow Velocity Waveforms Before Labor , 1992, Obstetrics and gynecology.

[30]  K. Rosen,et al.  Quantification of Fetal Heart Rate Variability in Relation to Oxygenation in the Sheep Fetus , 1977, Acta obstetricia et gynecologica Scandinavica.

[31]  W. Liston,et al.  Dangers of Oxytocin-induced Labour to Fetuses , 1974, British medical journal.

[32]  G S Dawes,et al.  Short-term variation in abnormal antenatal fetal heart rate records. , 1991, American journal of obstetrics and gynecology.

[33]  H. Jongsma,et al.  Mechanisms of late decelerations in the fetal heart rate. A study with autonomic blocking agents in fetal lambs. , 1979, European journal of obstetrics, gynecology, and reproductive biology.

[34]  C. Martin,et al.  Effect of acute hypoxemia and respiratory acidosis on the fetal heart rate in monkeys. , 1981, American journal of obstetrics and gynecology.

[35]  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.

[36]  J. Westgate,et al.  Do Fetal Electrocardiogram PR-RR Changes Reflect Progressive Asphyxia after Repeated Umbilical Cord Occlusion in Fetal Sheep? , 1998, Pediatric Research.

[37]  R. Gagnon,et al.  Fetal heart rate patterns in growth-restricted fetal sheep induced by chronic fetal placental embolization. , 1997, American journal of obstetrics and gynecology.

[38]  D. Delpy,et al.  Relation between frequency of uterine contractions and human fetal cerebral oxygen saturation studied during labour by near infrared spectroscopy , 1994, British journal of obstetrics and gynaecology.

[39]  S Cerutti,et al.  Power spectrum analysis of the fetal heart rate during noradrenaline infusion and acute hypoxemia in the chronic fetal lamb preparation. , 1993, International journal of bio-medical computing.

[40]  G S Dawes,et al.  Computerized Fetal Heart Rate Analysis in Labor , 1991, Obstetrics and gynecology.