Cardiovascular System - Ductus Venosus - Revision history

Z8600021 at 04:01, 3 December 2021

2021-12-03T04:01:54Z

← Older revision		Revision as of 15:01, 3 December 2021
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	===Reviews===		===Reviews===
			{{#pmid:31613539}}

	{{#pmid:11254155}}		{{#pmid:11254155}}

Z8600021 at 03:44, 3 November 2019

2019-11-03T03:44:15Z

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			* '''Review - Embryology, Ductus Venosus'''{{#pmid:31613539\|PMID31613539}} "The ductus venosus is a shunt that allows oxygenated blood in the umbilical vein to bypass the liver and is essential for normal fetal circulation. Blood becomes oxygenated in the placenta and travels to the right atrium via umbilical veins through the ductus venosus, then to the inferior vena cava. This oxygenated blood then passes through the foramen ovale, an opening between the atria, into the left atrium to be distributed systemically."

	* '''Patent Ductus Venosus and Congenital Heart Disease: A Case Report and Review'''{{#pmid:30344833\|PMID30344833}} "In utero, the ductus venosus connects the left portal vein to the inferior vena cava, allowing a portion of the venous blood to bypass the liver and return to the heart. After birth, the ductus venosus closes due to changes in intracardiac pressures and a decrease in endogenous prostaglandins. Failure of the ductus venosus to close may result in galactosemia, hypoxemia, encephalopathy with hyperammonia, and hepatic dysfunction. We report an infant with complex congenital heart disease (CHD) who developed coagulopathy and hyperammonia during the preoperative period secondary to patent ductus venosus (PDV). Previous reports of PDV in CHD are presented, its etiology and clinical consequences reviewed, and options for therapeutic treatment discussed."		* '''Patent Ductus Venosus and Congenital Heart Disease: A Case Report and Review'''{{#pmid:30344833\|PMID30344833}} "In utero, the ductus venosus connects the left portal vein to the inferior vena cava, allowing a portion of the venous blood to bypass the liver and return to the heart. After birth, the ductus venosus closes due to changes in intracardiac pressures and a decrease in endogenous prostaglandins. Failure of the ductus venosus to close may result in galactosemia, hypoxemia, encephalopathy with hyperammonia, and hepatic dysfunction. We report an infant with complex congenital heart disease (CHD) who developed coagulopathy and hyperammonia during the preoperative period secondary to patent ductus venosus (PDV). Previous reports of PDV in CHD are presented, its etiology and clinical consequences reviewed, and options for therapeutic treatment discussed."

Z8600021 at 11:25, 15 April 2019

2019-04-15T11:25:50Z

← Older revision		Revision as of 22:25, 15 April 2019
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	{{Heart Links}}		{{Heart Links}}

	[[Paper - The ductus venosus in the fetus and in the adult\|1923 Ductus Venosus]]		:Historic - Ductus Venosus: [[Paper - The ductus venosus in the fetus and in the adult\|1923 Ductus Venosus]]

	==Some Recent Findings==		==Some Recent Findings==
	{\|		{\|

Z8600021 at 02:52, 15 April 2019

2019-04-15T02:52:36Z

← Older revision		Revision as of 13:52, 15 April 2019
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	See also the related pages {{Foramen ovale}}, {{Ductus arteriosus}}, [[Cardiovascular - Arterial Development\|Arterial Development]], [[Cardiovascular - Venous Development\|Venous Development]], [[Placenta_-_Villi_Development#Placental_Villi_Blood_Vessels\|Placental Villi Blood Vessels]] and ~~[[Cardiovascular_System_-_Coronary_Circulation_Development\|~~Coronary ~~Circulation Development]]~~.		See also the related pages {{Foramen ovale}}, {{Ductus arteriosus}}, [[Cardiovascular - Arterial Development\|Arterial Development]], [[Cardiovascular - Venous Development\|Venous Development]], [[Placenta_-_Villi_Development#Placental_Villi_Blood_Vessels\|Placental Villi Blood Vessels]] and {{Coronary circulation}}.

Z8600021 at 02:52, 15 April 2019

2019-04-15T02:52:10Z

← Older revision		Revision as of 13:52, 15 April 2019
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	See also the related pages [[Cardiovascular - Arterial Development\|Arterial Development]], [[Cardiovascular - Venous Development\|Venous Development]], [[Placenta_-_Villi_Development#Placental_Villi_Blood_Vessels\|Placental Villi Blood Vessels]] and [[Cardiovascular_System_-_Coronary_Circulation_Development\|Coronary Circulation Development]].		See also the related pages {{Foramen ovale}}, {{Ductus arteriosus}}, [[Cardiovascular - Arterial Development\|Arterial Development]], [[Cardiovascular - Venous Development\|Venous Development]], [[Placenta_-_Villi_Development#Placental_Villi_Blood_Vessels\|Placental Villi Blood Vessels]] and [[Cardiovascular_System_-_Coronary_Circulation_Development\|Coronary Circulation Development]].

Z8600021 at 02:05, 19 March 2019

2019-03-19T02:05:17Z

← Older revision		Revision as of 13:05, 19 March 2019
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	[[File:Fetal ductus venosus cartoon 01.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal Ductus Venosus]]		[[File:Fetal ductus venosus cartoon 01.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal Ductus Venosus]]
	[[File:Fetal ductus venosus cartoon.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal circulation]]		[[File:Fetal ductus venosus cartoon.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal circulation]]
	The {{ductus venosus}} describes the vitelline blood vessel lying within the {{liver}} that connects (shunts) the portal and placental (umbilical) veins to the inferior vena cava and also acts to protect the fetus from placental over-circulation.		The {{ductus venosus}} describes the vitelline blood vessel lying within the {{liver}} that connects (shunts) the portal and placental (umbilical) veins to the inferior vena cava and also acts to protect the fetus from placental over-circulation. Blood flow within the ductus venosus is sensitive to changes in placental venous pressure, blood viscosity, and the regulation of ductus venosus diameter.

			During the second and third trimester, the mean fraction of placental blood shunted through the ductus venosus reduces from 30% to 20%, suggesting a fetal liver priority of circulation.. {{#pmid:11254155\|PMID11254155}}

	Postnatally this shunt functionally closes (93% of infants at 2 weeks) then structurally closes and degenerates to form it the ligamentum venosum. A comparison at day 3 of postnatal shunt closures; 94% of infants have a closed ductus arteriosus, while only 12% had a closed ductus venosus.{{#pmid:9377136\|PMID9377136}}		Postnatally this shunt functionally closes (93% of infants at 2 weeks) then structurally closes and degenerates to form it the ligamentum venosum. A comparison at day 3 of postnatal shunt closures; 94% of infants have a closed ductus arteriosus, while only 12% had a closed ductus venosus.{{#pmid:9377136\|PMID9377136}}
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	\| [[File:Mark_Hill.jpg\|90px\|left]] {{Most_Recent_Refs}}		\| [[File:Mark_Hill.jpg\|90px\|left]] {{Most_Recent_Refs}}

	Search term: [http://www.ncbi.nlm.nih.gov/pubmed/?term=Ductus+Venosus ''Ductus Venosus''] \| [http://www.ncbi.nlm.nih.gov/pubmed/?term=Patent+Ductus+Venosus ''Patent Ductus Venosus'']		Search term: [http://www.ncbi.nlm.nih.gov/pubmed/?term=Ductus+Venosus ''Ductus Venosus''] \| [http://www.ncbi.nlm.nih.gov/pubmed/?term=Patent+Ductus+Venosus ''Patent Ductus Venosus''] \| [http://www.ncbi.nlm.nih.gov/pubmed/?term=hydrops+fetalis ''hydrops fetalis'']

	\|}		\|}
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	===Reviews===		===Reviews===
			{{#pmid:11254155}}

	===Articles===		===Articles===

Z8600021 at 01:46, 19 March 2019

2019-03-19T01:46:48Z

← Older revision		Revision as of 12:46, 19 March 2019
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	[[File:Fetal ductus venosus cartoon 01.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal Ductus Venosus]]		[[File:Fetal ductus venosus cartoon 01.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal Ductus Venosus]]
	[[File:Fetal ductus venosus cartoon.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal circulation]]		[[File:Fetal ductus venosus cartoon.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal circulation]]
	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.		The {{ductus venosus}} describes the vitelline blood vessel lying within the {{liver}} that connects (shunts) the portal and placental (umbilical) veins to the inferior vena cava and also acts to protect the fetus from placental over-circulation.

Z8600021 at 02:01, 18 December 2018

2018-12-18T02:01:02Z

← Older revision		Revision as of 13:01, 18 December 2018
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	* '''Patent Ductus Venosus and Congenital Heart Disease: A Case Report and Review'''{{#pmid:30344833\|PMID30344833}} "In utero, the ductus venosus connects the left portal vein to the inferior vena cava, allowing a portion of the venous blood to bypass the liver and return to the heart. After birth, the ductus venosus closes due to changes in intracardiac pressures and a decrease in endogenous prostaglandins. Failure of the ductus venosus to close may result in galactosemia, hypoxemia, encephalopathy with hyperammonia, and hepatic dysfunction. We report an infant with complex congenital heart disease (CHD) who developed coagulopathy and hyperammonia during the preoperative period secondary to patent ductus venosus (PDV). Previous reports of PDV in CHD are presented, its etiology and clinical consequences reviewed, and options for therapeutic treatment discussed."		* '''Patent Ductus Venosus and Congenital Heart Disease: A Case Report and Review'''{{#pmid:30344833\|PMID30344833}} "In utero, the ductus venosus connects the left portal vein to the inferior vena cava, allowing a portion of the venous blood to bypass the liver and return to the heart. After birth, the ductus venosus closes due to changes in intracardiac pressures and a decrease in endogenous prostaglandins. Failure of the ductus venosus to close may result in galactosemia, hypoxemia, encephalopathy with hyperammonia, and hepatic dysfunction. We report an infant with complex congenital heart disease (CHD) who developed coagulopathy and hyperammonia during the preoperative period secondary to patent ductus venosus (PDV). Previous reports of PDV in CHD are presented, its etiology and clinical consequences reviewed, and options for therapeutic treatment discussed."

			* '''Normal variants of ductus venosus spectral Doppler flow patterns in normal pregnancies'''{{#pmid:30153762\|PMID30153762}} "Ductus venosus (DV) Doppler examinations in pregnancy have a widespread use for several important indications and play a crucial role in order to determine the fetal well-being. DV is usually visualized by the color Doppler mapping. We observed the instantaneous spectral flow type changes in pulsed Doppler examinations in spite of performing with the correct technique published by several authors. The variability of the pattern makes the sonographer/physician to be unsure for the correct placements of the sample gate despite fulfilling the all the criteria required for the vessel sampling. This prospective study was conducted between January 2016 and February 2017. We think that the fetal circulation is complicated more than estimated. There might be some endocrine agents released in the instantaneous physiologic reactions and changing the venous return abruptly or due to decreasing of the cardiac output directed to the placenta after 34 weeks influence the volume of the circulating blood in the fetus and so thereby the flow velocities instantaneously. The spectral waveform recognition approach is not reliable to identify if the DV spectral Doppler pattern is not the classic (standard) type and the DV should be visualized by wide-band color Doppler techniques particularly in the third trimester for the pulsed Doppler examinations. Studies are needed to evaluate the normal spectral variants of the flows correlated with the physiological compensatory mechanisms."

	* '''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}}		* '''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."
	\|}		\|}
	{\| class="wikitable mw-collapsible mw-collapsed"		{\| class="wikitable mw-collapsible mw-collapsed"
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	\| [[File:Mark_Hill.jpg\|90px\|left]] {{Most_Recent_Refs}}		\| [[File:Mark_Hill.jpg\|90px\|left]] {{Most_Recent_Refs}}

	Search term: [http://www.ncbi.nlm.nih.gov/pubmed/?term=Ductus+Venosus ''Ductus Venosus'']		Search term: [http://www.ncbi.nlm.nih.gov/pubmed/?term=Ductus+Venosus ''Ductus Venosus''] \| [http://www.ncbi.nlm.nih.gov/pubmed/?term=Patent+Ductus+Venosus ''Patent Ductus Venosus'']

	~~<pubmed limit=5>Ductus Venosus</pubmed>~~

	~~Search term: [http://www.ncbi.nlm.nih.gov/pubmed/?term=Patent+Ductus+Venosus ''Patent Ductus Venosus'']~~

	~~<pubmed limit=5>Patent Ductus Venosus</pubmed>~~
	\|}		\|}
			{\| class="wikitable mw-collapsible mw-collapsed"
			! Older papers
			\|-
			\| {{Older papers}}
			* '''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."
			\|}
	==Embryonic Development==		==Embryonic Development==
	===Stage 13===		===Stage 13===

Z8600021 at 21:55, 31 October 2018

2018-10-31T21:55:48Z

← Older revision		Revision as of 08:55, 1 November 2018
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	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.{{#pmid:9377136\|PMID9377136}}		Postnatally this shunt functionally closes (93% of infants at 2 weeks) then structurally closes and degenerates to form it the ligamentum venosum. A comparison at day 3 of postnatal shunt closures; 94% of infants have a closed ductus arteriosus, while only 12% had a closed ductus venosus.{{#pmid:9377136\|PMID9377136}}


	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.		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 the postnatal failure of this vessel to close.


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	<pubmed limit=5>Ductus Venosus</pubmed>		<pubmed limit=5>Ductus Venosus</pubmed>

			Search term: [http://www.ncbi.nlm.nih.gov/pubmed/?term=Patent+Ductus+Venosus ''Patent Ductus Venosus'']

			<pubmed limit=5>Patent Ductus Venosus</pubmed>
	\|}		\|}

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	==Abnormalities==		==Abnormalities==
	===Patent Ductus Venosus===		===Patent Ductus Venosus===
			Failure of the ductus venosus to close may result in a range of down-stream effects including: galactosemia, hypoxemia, encephalopathy with hyperammonia, and hepatic dysfunction.{{#pmid:30344833\|PMID30344833}}

	Patent or Persistent ductus venosus (postnatal 8 years) connecting the left portal vein to the inferior vena cava.{{#pmid:24688239\|PMID24688239}}		Patent or Persistent ductus venosus (postnatal 8 years) connecting the left portal vein to the inferior vena cava.{{#pmid:24688239\|PMID24688239}}
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	\| {{Ultrasound patent ductus venosus movie}}		\| {{Ultrasound patent ductus venosus movie}}
	\|}		\|}



	:'''Links:''' [[Computed Tomography]] \| [http://www.omim.org/entry/601466 OMIM 601466 Patent Ductus Venosus]		:'''Links:''' [[Computed Tomography]] \| [http://www.omim.org/entry/601466 OMIM 601466 Patent Ductus Venosus]

Z8600021 at 21:52, 31 October 2018

2018-10-31T21:52:22Z

← Older revision		Revision as of 08:52, 1 November 2018
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	[[File:Fetal ductus venosus cartoon 01.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal Ductus Venosus]]		[[File:Fetal ductus venosus cartoon 01.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal Ductus Venosus]]
	[[File:Fetal ductus venosus cartoon.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal circulation]]		[[File:Fetal ductus venosus cartoon.jpg\|thumb\|300px\|alt=Fetal ductus venosus cartoon\|Fetal circulation]]
	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.		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.~~<ref name=~~PMID9377136~~><pubmed>9377136</pubmed></ref>~~		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.{{#pmid:9377136\|PMID9377136}}


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			* '''Patent Ductus Venosus and Congenital Heart Disease: A Case Report and Review'''{{#pmid:30344833\|PMID30344833}} "In utero, the ductus venosus connects the left portal vein to the inferior vena cava, allowing a portion of the venous blood to bypass the liver and return to the heart. After birth, the ductus venosus closes due to changes in intracardiac pressures and a decrease in endogenous prostaglandins. Failure of the ductus venosus to close may result in galactosemia, hypoxemia, encephalopathy with hyperammonia, and hepatic dysfunction. We report an infant with complex congenital heart disease (CHD) who developed coagulopathy and hyperammonia during the preoperative period secondary to patent ductus venosus (PDV). Previous reports of PDV in CHD are presented, its etiology and clinical consequences reviewed, and options for therapeutic treatment discussed."

	* '''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}}		* '''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}}

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	{{Footer}}		{{Footer}}

	[[Category:Cardiovascular]]		[[Category:Cardiovascular]][[Category:Blood Vessel]]