scholarly journals Fetal heart rate and umbilical artery flow velocity variability in intrauterine growth restriction: a matched controlled study

2004 ◽  
Vol 23 (5) ◽  
pp. 461-465 ◽  
Author(s):  
A. S. M. Vinkesteijn ◽  
P. C. Struijk ◽  
N. T. C. Ursem ◽  
W. C. J. Hop ◽  
J. W. Wladimiroff
Keyword(s):  
Heart Rate ◽  
Flow Velocity ◽  
Intrauterine Growth Restriction ◽  
Fetal Heart Rate ◽  
Umbilical Artery ◽  
Fetal Heart ◽  
Growth Restriction ◽  
Controlled Study ◽  
Intrauterine Growth ◽  
Artery Flow

New computerized fetal heart rate analysis for surveillance of intrauterine growth restriction

2011 ◽  
Vol 31 (5) ◽  
pp. 509-514 ◽  
Author(s):  
E. A. Huhn ◽  
S. Lobmaier ◽  
T. Fischer ◽  
R. Schneider ◽  
A. Bauer ◽  
...  
Keyword(s):  
Heart Rate ◽  
Intrauterine Growth Restriction ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Growth Restriction ◽  
Intrauterine Growth ◽  
Rate Analysis ◽  
Heart Rate Analysis

Correcting umbilical artery flow velocity waveforms for fetal heart rate is unnecessary

1989 ◽  
Vol 160 (3) ◽  
pp. 704-707 ◽  
Author(s):  
Alexander D. Kofinas ◽  
Mark Espeland ◽  
Melissa Swain ◽  
Mary Penry ◽  
Lewis H. Nelson
Keyword(s):  
Heart Rate ◽  
Flow Velocity ◽  
Fetal Heart Rate ◽  
Umbilical Artery ◽  
Fetal Heart ◽  
Artery Flow

Heart rate and flow velocity variability as determined from umbilical Doppler velocimetry at 10–20 weeks of gestation

1998 ◽  
Vol 95 (5) ◽  
pp. 539-545 ◽  
Author(s):  
Nicolette T. C. URSEM ◽  
Piet C. STRUIJK ◽  
Wim C. J. HOP ◽  
Edward B. CLARK ◽  
Bradley B. KELLER ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Flow Velocity ◽  
Fetal Heart Rate ◽  
Umbilical Artery ◽  
Parasympathetic Nervous System ◽  
Fetal Heart ◽  
Peak Systolic Velocity ◽  
Fetal Heart Rate Variability ◽  
Artery Flow

1.The aim of this study was to define from umbilical artery flow velocity waveforms absolute peak systolic and time-averaged velocity, fetal heart rate, fetal heart rate variability and flow velocity variability, and the relation between fetal heart rate and velocity variables in early pregnancy. 2.A total of 108 women presenting with a normal pregnancy from 10 to 20 weeks of gestation consented to participate in a cross-sectional study design. Doppler ultrasound recordings were made from the free-floating loop of the umbilical cord. 3.Umbilical artery peak systolic and time-averaged velocity increased at 10–20 weeks, whereas fetal heart rate decreased at 10–15 weeks of gestation and plateaued thereafter. Umbilical artery peak systolic velocity variability and fetal heart rate variability increased at 10–20 and 15–20 weeks respectively. 4.The inverse relationship between umbilical artery flow velocity and fetal heart rate at 10–15 weeks of gestation suggests that the Frank–Starling mechanism regulates cardiovascular control as early as the late first and early second trimesters of pregnancy. A different underlying mechanism is suggested for the observed variability profiles in heart rate and umbilical artery peak systolic velocity. It is speculated that heart rate variability is mediated by maturation of the parasympathetic nervous system, whereas peak systolic velocity variability reflects the activation of a haemodynamic feedback mechanism.

Fetal heart rate monitoring and neonatal outcome in a population of early‐ and late‐onset intrauterine growth restriction

2019 ◽  
Vol 45 (7) ◽  
pp. 1343-1351
Author(s):  
Francesca G. Esposito ◽  
Salvatore Tagliaferri ◽  
Antonia Giudicepietro ◽  
Natascia Giuliano ◽  
Giuseppe M. Maruotti ◽  
...  
Keyword(s):  
Heart Rate ◽  
Intrauterine Growth Restriction ◽  
Fetal Heart Rate ◽  
Neonatal Outcome ◽  
Fetal Heart ◽  
Late Onset ◽  
Growth Restriction ◽  
Heart Rate Monitoring ◽  
Fetal Heart Rate Monitoring ◽  
Intrauterine Growth

scholarly journals Doppler-based fetal heart rate analysis markers for the detection of early intrauterine growth restriction

2017 ◽  
Vol 96 (11) ◽  
pp. 1322-1329 ◽  
Author(s):  
Lisa Stroux ◽  
Christopher W. Redman ◽  
Antoniya Georgieva ◽  
Stephen J. Payne ◽  
Gari D. Clifford
Keyword(s):  
Heart Rate ◽  
Intrauterine Growth Restriction ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Growth Restriction ◽  
Intrauterine Growth ◽  
Rate Analysis ◽  
Heart Rate Analysis

Comparison between Fetal Heart Rate Standard Parameters and Complexity Indexes for the Identification of Severe Intrauterine Growth Restriction

2007 ◽  
Vol 46 (02) ◽  
pp. 186-190 ◽  
Author(s):  
M. Signorini ◽  
G. Magenes ◽  
M. Ferrario
Keyword(s):  
Heart Rate ◽  
Intrauterine Growth Restriction ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Extraction Procedure ◽  
Approximate Entropy ◽  
Parameter Extraction ◽  
Growth Restriction ◽  
Pathological State ◽  
Intrauterine Growth

Summary Objectives : The intrauterine growth restriction (IUGR) is a pathological state: the fetus is at risk of hypoxia and this condition is associated with increased perinatal morbidity and mortality. However, evidence-based guidelines for clinical surveillance are poor and lack reliable indexes. This study introduces new procedures to extract parameters from the fetal heart rate signal in order to identify severe intrauterine growth restricted (IUGR) fetuses Methods : Standard parameters (time domain and frequency domain indexes) are compared to a new parameter, the Lempel Ziv complexity, and to two regularity estimators (approximate entropy and sample entropy). The paper analyzes the robustness of the indexes coming from the parameter extraction procedure. Results and Conclusions : The results show that the LZ complexity is a stable parameter and it is able to significantly discriminate the severe IUGR (preterm delivered) from moderate IUGR (at term delivered) and from healthy fetuses.

Correcting umbilical artery flow velocity waveforms for fetal heart rate is unnecessary

1989 ◽  
Vol 30 (3) ◽  
pp. 291-291
Author(s):  
AD Kofinas ◽  
M Espeland ◽  
M Swain ◽  
M Penry ◽  
LH Nelson
Keyword(s):  
Heart Rate ◽  
Flow Velocity ◽  
Fetal Heart Rate ◽  
Umbilical Artery ◽  
Fetal Heart ◽  
Artery Flow
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