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.

ductus venosus

the vascular channel in the fetus passing through the liver and joining the umbilical vein with the inferior vena cava. Before birth it carries highly oxygenated blood from the placenta to the fetal circulation. It closes shortly after birth as pulmonary circulation is established and as the vessels in the umbilical cord collapse and become occluded. See also ductus arteriosus, foramen ovale.

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.

ductus

pl. ductus [L.] duct.

ductus arteriosus
a fetal blood vessel that joins the aorta and pulmonary artery. Abnormal persistence of an open lumen after birth results in a patent ductus arteriosus. Called also persistent or patent ductus arteriosus.
ductus choledochus
ductus deferens
the excretory duct of the testis, which in horses and ruminants joins the excretory duct of the seminal vesicle to form the ejaculatory duct; called also vas deferens.
ductus epididymis
the duct which, in combination with connective tissue and muscle, forms the head, body and tail of the epididymis and continues as the ductus deferens.
ductus epoophori longitudinales
ductus reuniens
the joining channel between the cochlea and sacculus of the membranous labyrinth of the inner ear.
ductus venosus
a major blood channel that develops through the embryonic liver from the left umbilical vein to the caudal vena cava and closes within a few days after birth. If it remains patent, a congenital portacaval anastamosis is created.
References in periodicals archive ?
Ductus venosus Doppler (DVD) measurements were obtained throughout the 6-month period from women who underwent amniocentesis procedures due to increased risk for trisomy 21 in terms of first or second trimester screening test results.
After a detailed fetal ultrasound was performed, the patient was found to have right atrial enlargement, cardiomegaly, tricuspid regurgitation, ductus venosus agenesis, hyperdynamic flow in the umbilical vein, and chorioangioma.
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.
Uterine artery umbilical artery mid-cerebral artery and ductus venosus pulsatiliy index and resistance index were measured just before and after amniocentesis.
Screening for chromosomal abnormalities at 10-14 weeks: The role of the ductus venosus blood flow.
5), quienes encontraron una fuerte asociacion entre las alteraciones de la translucencia nucal y el Doppler del ductus venosus en las cromosomopatias, asi como en los defectos estructurales y funcionales del corazon fetal.
Increased foetal nuchal translucency and reverse flow of the ductus venosus in congenital cardiopathy
first a downward course Umbilical vein catheter Inferior vena cava above liver Direct course up via left portal and ductus venosus Long venous line Away from renal veins Central venous line Superior vena cava Nasogastric tube Left hypochondrium / stomach or Nasojejunal tube jejunum respectively Intercostal / mediastinal drain Intrathoracic / mediastinal Type Undesirable position External Cutaneous [O.
Together with subcostal study, it was demonstrated, an anomalous vertical venous vessel running in the midline, across the diaphragm, and connecting with the portal vein, and draining into inferior vena cava via the ductus venosus (Fig.
After delivery, three important circulatory pathways, the ductus venosus, the foramen ovale, and the ductus arteriosus, are closed, which leads to an increase in pulmonary blood flow in response to lung expansion.
Partial nodular transformation of liver in an adult with persistent ductus venosus.
The left umbilical vein gets shunted via the ductus venosus into the IVC bypassing the hepatic circulation and shunting the oxygenated blood primarily to fetal brain and myocardium.