Cardiovascular System - Ductus Venosus: Difference between revisions
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* '''Maternal diabetes alters the development of ductus venosus shunting in the fetus'''{{#pmid:29752712|PMID29752712}} "Despite adequate glycemic control, the risks of fetal macrosomia and perinatal complications are increased in diabetic pregnancies. Adjustments of the umbilical venous (UV) distribution, including increased ductus venosus (DV) shunting, can be important fetal compensatory mechanisms, but the impact of pregestational diabetes on UV and DV flow is not known. In pregnancies with pregestational diabetes mellitus, prioritized UV distribution to the fetal liver, and lower DV shunt capacity, both reduce the compensatory capability of the fetus and may represent an augmented risk during hypoxic challenges during late pregnancy and birth." {{maternal diabetes}} | |||
* '''Reference ranges for ductus venosus velocity ratios in pregnancies with normal outcomes'''{{#pmid:24449737|PMID24449737}} "Singleton pregnancies from 11 to 38 weeks with exactly established gestational ages (GAs) were recruited for the study. A total of 902 velocity wave ratios and ductus venosus PIVs were used for reference ranges. The S/v, S/D, and v/D ratios were not changed with GA (P > .05 for all). The PIV and S/a, v/a, and D/a ratios were reduced with GA (P < .0001 for all). Significant reductions in the means and standard deviations of the PIV and S/a, v/a, and D/a ratios were observed between 17 and 18 weeks' gestation. Therefore, nomograms were separately created between 11 and 17 weeks and 18 and 38 weeks." | * '''Reference ranges for ductus venosus velocity ratios in pregnancies with normal outcomes'''{{#pmid:24449737|PMID24449737}} "Singleton pregnancies from 11 to 38 weeks with exactly established gestational ages (GAs) were recruited for the study. A total of 902 velocity wave ratios and ductus venosus PIVs were used for reference ranges. The S/v, S/D, and v/D ratios were not changed with GA (P > .05 for all). The PIV and S/a, v/a, and D/a ratios were reduced with GA (P < .0001 for all). Significant reductions in the means and standard deviations of the PIV and S/a, v/a, and D/a ratios were observed between 17 and 18 weeks' gestation. Therefore, nomograms were separately created between 11 and 17 weeks and 18 and 38 weeks." | ||
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Revision as of 22:09, 13 May 2018
Embryology - 20 Jun 2024 Expand to Translate |
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Introduction
The ductus venosus describes the vitelline blood vessel lying within the liver that connects (shunts) the portal and umbilical veins to the inferior vena cava and also acts to protect the fetus from placental over-circulation.
Postnatally this shunt functionally closes (93% of infants at 2 weeks) then structurally closes and degenerates to form it the ligamentum venosum. A comparison oat day 3 of postnatal shunt closures; 94% of infants have a closed ductus arteriosus, while only 12% had a closed ductus venosus.[1]
Abnormalities include an absence or patently. Absence can cause hydrops fetalis and the umbilical vein then drains directly into the inferior vena cava or right atrium. A patent or persistent ductus venosus describes postnatal failure of this vessel to close.
See also the related pages Arterial Development, Venous Development, Placental Villi Blood Vessels and Coronary Circulation Development.
Some Recent Findings
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More recent papers |
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This table allows an automated computer search of the external PubMed database using the listed "Search term" text link.
More? References | Discussion Page | Journal Searches | 2019 References | 2020 References Search term: Ductus Venosus <pubmed limit=5>Ductus Venosus</pubmed> |
Embryonic Development
Stage 13
Human Embryo Liver and Associated Veins
Human embryo liver ventral surface view. Figure after {{His)).
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Stage 22
Fetal Development
Fetal ductus venosus ultrasound[4]
- Links: ultrasound
Physiology
Fetal ductus venosus pressure wave
Abnormalities
Patent Ductus Venosus
Patent or Persistent ductus venosus (postnatal 8 years) connecting the left portal vein to the inferior vena cava.[5]
Tomography | Two-dimensional echocardiography | |||
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References
- ↑ <pubmed>9377136</pubmed>
- ↑ Lund A, Ebbing C, Rasmussen S, Kiserud TW & Kessler J. (2018). Maternal diabetes alters the development of ductus venosus shunting in the fetus. Acta Obstet Gynecol Scand , , . PMID: 29752712 DOI.
- ↑ Turan OM, Turan S, Sanapo L, Willruth A, Wilruth A, Berg C, Gembruch U, Harman CR & Baschat AA. (2014). Reference ranges for ductus venosus velocity ratios in pregnancies with normal outcomes. J Ultrasound Med , 33, 329-36. PMID: 24449737 DOI.
- ↑ da Silva FC, de Sá RA, de Carvalho PR & Lopes LM. (2007). Doppler and birth weight Z score: predictors for adverse neonatal outcome in severe fetal compromise. Cardiovasc Ultrasound , 5, 15. PMID: 17374167 DOI.
- ↑ Subramanian V, Kavassery MK, Sivasubramonian S & Sasidharan B. (2013). Percutaneous device closure of persistent ductus venosus presenting with hemoptysis. Ann Pediatr Cardiol , 6, 173-5. PMID: 24688239 DOI.
Revoews
Articles
Fugelseth D, Lindemann R, Liestøl K, Kiserud T & Langslet A. (1997). Ultrasonographic study of ductus venosus in healthy neonates. Arch. Dis. Child. Fetal Neonatal Ed. , 77, F131-4. PMID: 9377136
Search Pubmed
Search Pubmed: Ductus Venosus
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Cite this page: Hill, M.A. (2024, June 20) Embryology Cardiovascular System - Ductus Venosus. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Cardiovascular_System_-_Ductus_Venosus
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G