ductus venosus


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ductus

 [duk´tus] (pl. duc´tus) (L.)
ductus arterio´sus a fetal blood vessel that joins the aorta and pulmonary artery.
ductus de´ferens the excretory duct of the testis, which joins the excretory duct of the seminal vesicle to form the ejaculatory duct; called also vas deferens.
patent ductus arteriosus see patent ductus arteriosus.
ductus veno´sus a major blood channel that develops through the embryonic liver from the left umbilical vein to the inferior vena cava.

duc·tus ve·no·sus

in the fetus, continuation of the left umbilical vein through the liver to the vena cava inferior; after birth, its lumen becomes obliterated, forming the ligamentum venosum.

duc·tus ve·no·sus

(dŭk'tŭs vē-nō'sŭs)
In the fetus, continuation of the left umbilical vein through the liver to the inferior vena cava; after birth, its lumen is obliterated, forming the ligamentum venosum.
References in periodicals archive ?
published a cohort study with an association between neuronal injury markers and intrauterine growth restriction; they found no significance for NSE, but they observed a positive correlation for umbilical artery PI, RI, ductus venosus RI, S/d ratio with NSE.
Hemodynamics of the ductus venosus. Eur J Obstet Gynecol Reprod Biol 1999;84:139-47.
Several studies have demonstrated changes in diastolic function in FDMs, being the ductus venosus PI [20] and the pulmonary vein PI [21] significantly higher in fetuses with myocardial hypertrophy, probably due to a lower ventricular compliance.
Although PDV (patent ductus venosus) was detected in the abdominal CT and MR portography made for this reason, a decrease was observed in the ductus calibration in MR portography made when compared to the radiological evaluations made before (Figure 1).
[2.] Kiserud T The ductus venosus. Semin Perinatol 2001;25(1):11-20.
Structural alterations can affect the foetal development, because nutrient exchange is very delicate during gestation period (Ferreira et al., 2009).In addition to these vessels, foetal circulatory circuit has a developing aorta and ductus venosus which shunts off most of the blood flowing from the umbilical vein away from the liver into the caudal vena cava (Brandow, 2009), the blood then flows into the right atrium and enters the foramen ovale into the left atrium by passing the pulmonary circulation (McGeady et al., 2006).
Objective: We aimed to evaluate ductus venosus Doppler waveforms before and after amniocentesis in order to investigate any effect of amniocentesis on fetal myocardial hemodynamics.
Instead, ductus venosus was considered as the strongest Doppler predictor of perinatal mortality in preterm IUGR fetuses [25-27].
Investigations continue exploring additional ultrasound parameters for DS risk assessment, (21) Recent studies have found that blood flow through the fetal Ductus Venosus (19,20), fetal tricuspid regurgitation, and the frontomaxillary facial angles (22) are all promising.
Nuchal translucency and ductus venosus as ultrasound markers of chromosomal abnormalities.
The blood returning to the fetus through the umbilical vein mostly passes through the ductus venosus and therefore only a small amount goes to the liver.