scholarly journals OP24.04: Time-related analysis of ductus venosus flow velocity waveforms in normal singleton pregnancies

2010 ◽  
Vol 36 (S1) ◽  
pp. 122-122
Author(s):  
D. Tachibana ◽  
K. Abe ◽  
H. Nobeyama ◽  
T. Sumi ◽  
O. Ishiko ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Ductus Venosus ◽  
Singleton Pregnancies

Reference ranges for time-related analysis of ductus venosus flow velocity waveforms in singleton pregnancies

2012 ◽  
Vol 32 (8) ◽  
pp. 803-809 ◽  
Author(s):  
Kayoko Nakagawa ◽  
Daisuke Tachibana ◽  
Hiroyuki Nobeyama ◽  
Mitsuru Fukui ◽  
Toshiyuki Sumi ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Ductus Venosus ◽  
Reference Ranges ◽  
Singleton Pregnancies

Ductus venosus flow velocity waveforms in relation to fetal behavioural states

1994 ◽  
Vol 101 (3) ◽  
pp. 220-224 ◽  
Author(s):  
Tjeerd W. A. Huisman ◽  
Christoph Brezinka ◽  
Patricia A. Stewart ◽  
Theo Stijnen ◽  
Juriy W. Wladimiroff
Keyword(s):  
Flow Velocity ◽  
Ductus Venosus

375: Ductus venosus flow velocity waveforms indices and arterial cord pH in IUGR fetuses delivered at 32 weeks

2009 ◽  
Vol 201 (6) ◽  
pp. S145
Author(s):  
Juan De Leon-Luis ◽  
Giancarlo Mari ◽  
Jacques Samson ◽  
Robert Egerman ◽  
Yinka Oyelese ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Ductus Venosus

scholarly journals Ductus Venosus Doppler Flow Velocity after Transplacental and Non-transplacental Amniocentesis during Midtrimester

1969 ◽  
Vol 30 (5) ◽  
Author(s):  
Burcu Artunc Ulkumen ◽  
Halil Gursoy Pala ◽  
Yesim Bulbul Baytur ◽  
Faik Mumtaz Koyuncu
Keyword(s):  
Flow Velocity ◽  
Ductus Venosus ◽  
Doppler Flow

scholarly journals Alterations in time intervals of ductus venosus and atrioventricular flow velocity waveforms in growth-restricted fetuses

2015 ◽  
Vol 46 (2) ◽  
pp. 221-226 ◽  
Author(s):  
N. Wada ◽  
D. Tachibana ◽  
Y. Kurihara ◽  
K. Nakagawa ◽  
A. Nakano ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Ductus Venosus ◽  
Time Intervals

scholarly journals Improving our Knowledge in Twins: The Role of Ductus Venosus in the First Trimester

2013 ◽  
Vol 7 (4) ◽  
pp. 409-414
Author(s):  
Nuno Montenegro ◽  
Alexandra Matias
Keyword(s):  
Blood Flow ◽  
Obstet Gynecol ◽  
Chromosomal Abnormalities ◽  
First Trimester ◽  
Ductus Venosus ◽  
Abnormal Karyotype ◽  
Cardiac Defects ◽  
Twin Pregnancies ◽  
Singleton Pregnancies

ABSTRACT Ductus venosus (DV) is a tiny vessel with a central role in fetal circulation both in singletons and multiples. In the present review we detail the contribution of DV evaluation in twin pregnancies in the first trimeter of pregnancy. The higher prevalence of abnormal A-wave in fetuses with abnormal karyotype and/or cardiac defects made DV evaluation a useful marker for the screening of chromosomal abnormalities and fetal cardiac anomalies. In dichorionic (DC) pregnancies, DV blood flow assessment reproduces the role of NT in the screening for aneuploidies, just as in singleton pregnancies. In monochorionic (MC) twin pregnancies, the Doppler assessment of DV blood flow improves the detection of those at higher risk of developing twin-to-twin transfusion syndrome or growth discrepancy later in pregnancy. As for singletons, DV should be systematically evaluated in all first trimester scans for a more performant screening in multiples. How to cite this article Matias A, Montenegro N. Improving our Knowledge in Twins: The Role of Ductus Venosus in the First Trimester. Donald School J Ultrasound Obstet Gynecol 2013;7(4):409-414.

scholarly journals P21.06: Ductus venosus Doppler flow velocity after transplacental and non-transplasental amniocentesis during midtrimester

2014 ◽  
Vol 44 (S1) ◽  
pp. 311-311
Author(s):  
B. Artunc Ulkumen ◽  
H. Pala ◽  
Y. Bulbul Baytur ◽  
F. Koyuncu
Keyword(s):  
Flow Velocity ◽  
Ductus Venosus ◽  
Doppler Flow

scholarly journals Effect of breathing on venous return during delayed cord clamping: an observational study

2021 ◽  
pp. fetalneonatal-2020-321431
Author(s):  
Emma Brouwer ◽  
Ronny Knol ◽  
Annie Kroushev ◽  
Thomas Van Den Akker ◽  
Stuart B Hooper ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Right Atrium ◽  
Spontaneous Breathing ◽  
Venous Return ◽  
Vena Cava ◽  
Ductus Venosus ◽  
Delayed Cord Clamping ◽  
Cord Clamping ◽  
Digital Format ◽  
The Right

ObjectiveTo investigate the effect of spontaneous breathing on venous return in term infants during delayed cord clamping at birth.MethodsEchocardiographic ultrasound recordings were obtained directly after birth in healthy term-born infants. A subcostal view was used to obtain an optimal view of the inferior vena cava (IVC) entering the right atrium, including both the ductus venosus (DV) and the hepatic vein (HV). Colour Doppler was used to assess flow direction and flow velocity. Recordings continued until the umbilical cord was clamped and were stored in digital format for offline analyses.ResultsUltrasound recordings were obtained in 15 infants, with a median (IQR) gestational age of 39.6 (39.0–40.9) weeks and a birth weight of 3560 (3195–4205) g. Flow was observed to be antegrade in the DV and HV in 98% and 82% of inspirations, respectively, with flow velocity increasing in 74% of inspirations. Retrograde flow in the DV was observed sporadically and only occurred during expiration. Collapse of the IVC occurred during 58% of inspirations and all occurred caudal to the DV inlet (100%).ConclusionSpontaneous breathing was associated with collapse of the IVC and increased antegrade DV and HV flow velocity during inspiration. Therefore, inspiration appears to preferentially direct blood flow from the DV into the right atrium. This indicates that inspiration could be a factor driving placental transfusion in infants.

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