Uterine blood flow, fetal heart rate, gestational length, and fetal birth weight variability in response to maternal temperament in the goat

2021 ◽  
Vol 92 (1) ◽  
Author(s):  
Mohammed A. Elmetwally ◽  
Alaa Samy ◽  
Ashraf Eldesouky ◽  
Yasser Y. Lenis ◽  
Wael Eldomany
Keyword(s):  
Heart Rate ◽  
Blood Flow ◽  
Birth Weight ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Uterine Blood Flow ◽  
Gestational Length ◽  
Maternal Temperament ◽  
Fetal Birth Weight

scholarly journals Acute reduction of uterine blood flow and fetal heart rate changes in pregnant sheep near term

1977 ◽  
Vol 5 (1) ◽  
pp. 39-55 ◽  
Author(s):  
Heinz-Dieter Junge ◽  
Wolfgang Künzel ◽  
Friedrich Karl Klöck
Keyword(s):  
Heart Rate ◽  
Blood Flow ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Uterine Blood Flow ◽  
Pregnant Sheep ◽  
Near Term

Effect of prolonged catecholamine infusion on heart rate, blood pressure, breathing, and growth in fetal sheep

1995 ◽  
Vol 73 (12) ◽  
pp. 1750-1758 ◽  
Author(s):  
A. D. Bocking ◽  
S. E. White ◽  
S. Kent ◽  
L. Fraher ◽  
V. K. M. Man ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Blood Flow ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Tissue Growth ◽  
Uterine Blood Flow ◽  
Epinephrine Infusion ◽  
Fetal Sheep ◽  
Norepinephrine Infusion

Norepinephrine and epinephrine were infused into fetal sheep for 24 h to compare the effects on fetal heart rate, blood pressure, breathing movements, and tissue growth with those of prolonged reductions in uterine blood flow. Norepinephrine concentrations increased (p < 0.01) from 871 ± 71 to 6831 ± 1090 pg/mL (2 h) with norepinephrine infusion, and epinephrine concentrations increased from 310 ± 95 to 1424 ± 288 pg/mL (2 h) with epinephrine infusion. Fetal pH decreased (p < 0.01) from 7.37 ± 0.01 to 7.29 ± 0.02 at 0.5 h of the norepinephrine infusion and returned to control values by 2 h, whereas fetal lactate concentrations increased (p < 0.05) from 1.6 ± 0.2 to 4.6 ± 1.0 mmol/L at 2 h and remained elevated for 12 h. Lactate concentrations also increased with epinephrine infusion. Fetal heart rate increased (p < 0.05) from 176 ± 5 to 246 ± 6 and 220 ± 6 beats/min in the 1st h of norepinephrine and epinephrine infusions, respectively, with a subsequent decline. Fetal blood pressure increased (p < 0.05) from 43 ± 3 and 40 ± 2 to 53 ± 3 and 47 ± 2 mmHg (1 mmHg = 133.3 Pa) during the 1st h of norepinephrine and epinephrine infusions, respectively, remaining elevated for 24 h. Fetal body weights were not different between the groups of animals, although liver/body weight ratio was less (p < 0.05) in epinephrine-infused fetuses (0.030 ± 0.001) compared with vehicle-infused animals (0.036 ± 0.002). There was no change in DNA synthesis rate in any of the fetal organs, despite changes in organ-specific DNA and protein content. Our results indicate that the changes in fetal cardiovascular and behavioural function, as well as tissue growth, that occur with prolonged reductions in uterine blood flow are not mediated solely by elevated circulating catecholamine concentrations.Key words: fetal physiology, catecholamines, pregnancy.

scholarly journals Correlation of reduced amniotic fluid index with neonatal outcome

2017 ◽  
Vol 6 (6) ◽  
pp. 2401 ◽  
Author(s):  
Rachna Chaudhary ◽  
Vandana Dhama ◽  
Shakun Singh ◽  
Madhumita Singh
Keyword(s):  
Heart Rate ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Amniotic Fluid ◽  
Fetal Heart Rate ◽  
Neonatal Death ◽  
Neonatal Outcome ◽  
Fetal Heart ◽  
Birth Asphyxia ◽  
Apgar Scores

Background: Amniotic fluid assessment is an essential part of evaluation of fetus health in terms of fetal distress, meconium aspiration, IUGR, Non-reassuring fetal heart rate patterns, birth asphyxia, low birth weight, low Apgar-scores and NICU Admissions.Methods: This prospective observational study included 200 antenatal patients of term gestation of which 100 cases with AFI<8 and 100 controls with AFI ≥8 but ≤ 15 were included in study. Ultrasonography and NST were done and results of both groups compared for the presence of meconium passage, non-reactive NST, birth asphyxia, low Apgar-scores, low birth weight, NICU admissions and neonatal deaths.Results: There was increased incidence of non-reactive NST (40% vs 12%), meconium stained (33% vs 10%) in oligohydramnios group. In cases 49% of patients had vaginal delivery while in controls 78%. 51% underwent LSCS in cases while in controls 22%. Apgar score <7 was found in 7% vs 4%. Birth weight was <2.5 kg in 35% vs 13%. NICU admissions in study group was 15% vs 11%. The neonatal death was similar in both cases groups.Conclusions: Oligohydramnios affect the neonatal outcome in terms of meconium stained liquor, non-reassuring fetal heart rate, low birth weight, birth asphyxia, low Apgar-scores and NICU Admissions and neonatal death but the difference was not statistically significant. Early detection of oligohydramnios and its management may help in reduction of perinatal morbidity and decreased caesarean deliveries.

The relationship between fetal heart rate and doppler blood flow velocity waveforms

1988 ◽  
Vol 14 (7) ◽  
pp. 593-597 ◽  
Author(s):  
J.A.G.W. van den Wijngaard ◽  
J. van Eyck ◽  
J.W. Wladimiroff
Keyword(s):  
Heart Rate ◽  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
The Relationship

scholarly journals Patterns of fetal heart rate response at ∼30 weeks gestation predict size at birth

2011 ◽  
Vol 2 (4) ◽  
pp. 212-217 ◽  
Author(s):  
C. A. Sandman ◽  
C. J. Cordova ◽  
E. P. Davis ◽  
L. M. Glynn ◽  
C. Buss
Keyword(s):  
Heart Rate ◽  
Birth Weight ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Fetal Maturity ◽  
Birth Weight Percentile ◽  
English Speaking ◽  
Post Hoc ◽  
Gestational Age At Birth ◽  
Startling Stimulus

There is evidence that fetal exposure to maternal stress is associated with adverse birth outcomes. Less is known about the association between fetal responses to a stressor and indicators of fetal maturity and developmental outcomes. The purpose of the present study was to determine whether fetal heart rate (FHR) patterns in response to a startling stimulus at ∼30 weeks of gestation were associated with gestational age at birth and birth weight. FHR was measured in 156 maternal–fetal dyads following a vibroacoustic stimulus. All pregnancies were singleton intrauterine pregnancies in English-speaking women who were primarily married, middle class, White and at least 18 years of age. Group-based trajectory modeling identified five groups of fetuses displaying distinctive longitudinal trajectories of FHR response to the startling stimulus. The FHR group trajectories were significantly associated with birth weight percentile (P < 0.01) even after controlling for estimated fetal weight at the time of assessment and parity, which are the known factors influencing birth weight (P < 0.01). Post hoc analyses indicated that two groups accounted for the association between FHR patterns and birth weight. The group (n = 23) with the lowest birth weight exhibited an immediate FHR deceleration followed by an immediate acceleration that does not recover. An FHR pattern characterized by immediate and fast acceleration to the peak and a slow discovery to baseline was associated with the highest birth weight. This is the first direct evidence showing that low birth weight and the resulting neurological consequences may have their origins in early fetal development.

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