Gender-Related Differences in Fetal Heart Rate during First Trimester

2005 ◽  
Vol 21 (1) ◽  
pp. 144-147 ◽  
Author(s):  
D.S. McKenna ◽  
G. Ventolini ◽  
R. Neiger ◽  
C. Downing
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
First Trimester

scholarly journals Reference values for fetal heart rate in cattle in the first trimester of pregnancy

2019 ◽  
Vol 67 (2) ◽  
pp. 274-281
Author(s):  
Lea Lénárt ◽  
Marcel Taverne ◽  
Peter Wolleswinkel ◽  
Zoltán Gubik ◽  
László Molnár ◽  
...  
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
First Trimester ◽  
Reference Curve ◽  
Singleton Pregnancy ◽  
Array Transducer ◽  
Significant Difference ◽  
Bovine Fetuses ◽  
First Trimester Of Pregnancy

The aim of this study was to create a fetal heart rate (FHR) reference curve for singleton bovine fetuses in the first trimester of gestation and to determine its possible relationship with the outcome of pregnancy. Forty-eight Holstein-Friesian cows with one fetus and five cows with twins were used. Fetal heart beatings were recorded on videotape during transrectal scanning with a 5 and/or 7.5 MHz linear array transducer on a weekly basis between Days 40 and 95 of gestation. FHR was calculated by averaging the results of five counts of the same record by the same observer. For singleton pregnancies, a reference curve was created using the mean, the standard deviation (SD) and the 5th and 95th percentiles. The FHR increased from Days 40–46 (173 beats/min) to Days 61–67 (183 beats/min). After a peak, the FHR decreased slowly until Days 89–95 (175 beats/min), while the SD increased. There was no significant difference between singleton and twin fetuses. in the aborted and lost fetuses in twin gestation due to fetal reduction, both bradycardia and tachycardia were detected compared to the singleton pregnancy reference curve.

scholarly journals The pattern of variations in the first trimester fetal heart rate in Indian population: a pilot study

2019 ◽  
Vol 8 (11) ◽  
pp. 4419
Author(s):  
Hethyshi R.
Keyword(s):  
Heart Rate ◽  
Gestational Age ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
First Trimester ◽  
Embryonic Heart ◽  
Large Sample Size ◽  
Crown Rump Length ◽  
Heart Rates ◽  
South Indian

Background: Fetal heart rate is an indicator of fetal viability. During third trimester and labour the normal range of fetal heart rate is between 110-160 bpm as recommended by the international guidelines. Unlike this, the first trimester embryonic heart rate does not lie in the same range. During the first trimester the normal embryonic heart rate varies between each week of gestation, as determined by a few western studies. Indian studies on the same are not available. Objective of this study was to determine the trend of the fetal heart rate in first trimester of pregnancy in South Indian women.Methods: Transvaginal scan was done in 51 pregnant women with singleton pregnancy attending the antenatal clinic in a medical college hospital. Crown rump length and fetal heart rate were measured and plotted on a graph. Also, the fetal heart rate at different gestational age of our study was compared with the fetal heart rates at the same gestational age from the studies in the western population.Results: The range of fetal heart rate at different weeks of gestation was comparable to the heart rate variations as seen in the western population. The maximum heart rates at 9 weeks of gestation in our study was higher than the heart rate in the western population.Conclusions: Possibility of variation in the fetal heart rates in the first trimester in different populations cannot be ruled out until confirmed by studies with large sample size.

Pregestational diabetes and fetal heart rate in the first trimester of pregnancy

2019 ◽  
Vol 232 ◽  
pp. 30-32 ◽  
Author(s):  
Angelo Sirico ◽  
Laura Sarno ◽  
Fulvio Zullo ◽  
Pasquale Martinelli ◽  
Giuseppe M. Maruotti
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
First Trimester ◽  
Pregestational Diabetes ◽  
First Trimester Of Pregnancy

scholarly journals P01.44: First-trimester fetal heart rate and Down syndrome screening

2006 ◽  
Vol 28 (4) ◽  
pp. 522-523
Author(s):  
I. Kalelioglu ◽  
R. Has ◽  
S. Aydin ◽  
H. Ermis ◽  
A. Yildirim ◽  
...  
Keyword(s):  
Heart Rate ◽  
Down Syndrome ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
First Trimester ◽  
Down Syndrome Screening

First trimester volumetric measurements: relation with hormone levels and fetal heart rate

2012 ◽  
Vol 286 (2) ◽  
pp. 365-372 ◽  
Author(s):  
Nermin Köşüş ◽  
Aydın Köşüş ◽  
Nilgün Öztürk Turhan
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
First Trimester ◽  
Hormone Levels ◽  
Volumetric Measurements

scholarly journals First trimester low fetal heart rate and small crown-rump length, but not subchorionic hemorrhage or yolk SAC diameter, predict pregnancy loss among women with history of pregnancy loss

2018 ◽  
Vol 110 (4) ◽  
pp. e258
Author(s):  
E.A. DeVilbiss ◽  
S. Mumford ◽  
L. Sjaarda ◽  
M.T. Connell ◽  
S. Rafique ◽  
...  
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Pregnancy Loss ◽  
Fetal Heart ◽  
First Trimester ◽  
Yolk Sac ◽  
Crown Rump Length ◽  
History Of

scholarly journals First trimester fetal heart rate as a predictor of newborn sex

2015 ◽  
Vol 29 (5) ◽  
pp. 803-806
Author(s):  
L. A. Bracero ◽  
D. J. Seybold ◽  
S. Witsberger ◽  
L. Rincon ◽  
A. Modak ◽  
...  
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
First Trimester
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