منابع مشابه
The ductus venosus and the mechanism of its closure.
Although recognized since Vesalius as one of the distinguishing features of the foetal circulation, the precise function of the ductus venosus is uncertain. Anatomically, it provides a direct connexion between the umbilical vein and the inferior vena cava. Functionally, it represents a bypass through which part of the oxygenated umbilical blood flows directly into the inferior vena cava. Howeve...
متن کاملHepatic manifestations of familial patent ductus venosus in adults.
BACKGROUND The ductus venosus connects the umbilical vein to the inferior vena cava during fetal life and subsequently closes rapidly after birth. It is known as patent ductus venosus when it remains patent in adulthood. PATIENTS A 43 year old man with a history of panhypopituitarism presented with recurrent bouts of pedal oedema associated with fatigue, hypoalbuminaemia, and elevated prothro...
متن کاملFunctional morphology of ductus venosus in human fetus.
OBJECTIVES The morphology of region umbilical vein, umbilical sinus and ductus venosus of human fetuses have been investigated. MATERIAL AND METHODS 26 human fetuses between 20 and 40 weeks' gestation were examined by morphological methods. The umbilical vein, DV and the portal vein were obtained after termination of gestation. Tissue samples have been fixed in phormaldehyde solution (pH 7,2)...
متن کاملUltrasonographic study of ductus venosus in healthy neonates.
AIM To assess ultrasonographically the flow pattern and the time of postnatal closure of ductus venosus related to the other fetal shunts. METHODS Fifty healthy, term neonates were studied from day 1 up to day 18 using a VingMed CFM 800A ultrasound scanner. RESULTS Ductus arteriosus was closed in 94% of the infants before day 3. Ductus venosus, however, was closed in only 12% at the same ti...
متن کاملImproving our Knowledge in Twins: The Role of Ductus Venosus in the First Trimester
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 chromoso...
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ژورنال
عنوان ژورنال: RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren
سال: 2020
ISSN: 1438-9029,1438-9010
DOI: 10.1055/a-1275-0984