scholarly journals OP35.07: The umbilical vein, portal system, hepatic veins and other central veins: detailed examination in three planes. A large series

2012 ◽  
Vol 40 (S1) ◽  
pp. 162-162
Author(s):  
S. Yagel ◽  
B. Messing ◽  
S. M. Cohen ◽  
D. V. Valsky
Keyword(s):  
Umbilical Vein ◽  
Detailed Examination ◽  
Large Series ◽  
Portal System ◽  
Hepatic Veins

Comparative volumes and vascular microanatomy of the intrahepatic venous system of the harbour porpoise, Phocoena phocoena (L.)

1978 ◽  
Vol 56 (11) ◽  
pp. 2292-2298 ◽  
Author(s):  
J. W. Hilton ◽  
D. E. Gaskin
Keyword(s):  
Vena Cava ◽  
Liver Weight ◽  
Harbour Porpoise ◽  
Venous System ◽  
Portal System ◽  
Hepatic Veins ◽  
Phocoena Phocoena ◽  
Diaphragmatic Muscle ◽  
Injection Techniques ◽  
Portal Veins

The intrahepatic venous systems of the harbour porpoise, Phocoena phocoena, were studied using single and double injection techniques. Large band-like formations of elastin fibres were found in the dilated terminal portions of the major hepatic veins and the adjacent section of the caudal vena cava but not in the equivalent major branches of the thicker walled portal veins. The hepatic venous system increases in volume disproportionately with increase in body length and liver weight; the portal system does not. No distal sphincter formations were found in the major hepatic veins, nor were sphincters or valves present in the portal system. The vena cava, however, is surrounded by a loop of diaphragmatic muscle or 'caval sling,' which may cause significant occlusion of the vena cava following inspiration. The distensible terminal portions of the major hepatic veins and the adjacent portion of the caudal vena cava could then function as a temporary blood reservoir or 'intrahepatic sinus.' While this would be a relatively inefficient mechanism for preventing ventricular engorgement, it might be sufficient for the needs of P. phocoena, which is a relatively poor diver.

scholarly journals Transjugular Intrahepatic Portosystemic Shunt: A Literature Review

2017 ◽  
Vol 34 (2) ◽  
pp. 114-122 ◽  
Author(s):  
Vicki R. Franklin ◽  
Layla Q. Simmons ◽  
Anthony L. Baker
Keyword(s):  
Portal Hypertension ◽  
Transjugular Intrahepatic Portosystemic Shunt ◽  
Venous Pressure ◽  
Portosystemic Shunt ◽  
Portal System ◽  
Refractory Ascites ◽  
Hepatic Veins ◽  
Technological Advances ◽  
Intrahepatic Portosystemic Shunt ◽  
Diseased Liver

Transjugular intrahepatic portosystemic shunt, or TIPS, is a procedure used to decompress the portal system resulting from portal hypertension. The technique was inadvertently discovered during a transjugular cholangiography procedure around 1969. Technological advances in the 1980s and 1990s have resulted in more positive outcomes for the TIPS procedure since its inception. There are several indications for performing the procedure, including refractory ascites, variceal bleeding, and portal hypertension. Liver disease can lead to portal hypertension, and few treatments are available; however, with TIPS, many patients obtain favorable results. The goal of placing an intrahepatic portosystemic shunt is to bypass the vascular resistance in the cirrhotic liver by creating a channel between the portal and hepatic veins, thereby reducing portal venous pressure and portal hypertension. Normal and diseased liver function is explained as well as the TIPS procedure process, materials, complications, and long-term outcomes.

Umbilical Vein Cannulation in Portal-System Disease

1968 ◽  
Vol 279 (17) ◽  
pp. 930-932 ◽  
Author(s):  
Ronald A. Malt ◽  
Robert J. Corry ◽  
Federico Chávez-Peón
Keyword(s):  
Umbilical Vein ◽  
Portal System ◽  
Vein Cannulation ◽  
System Disease

scholarly journals EVALUATION OF THE METHODS OF IMAGING IN THE DIAGNOSIS OF LIVER CIRRHOSIS AND PORTAL HYPERTENSION

2016 ◽  
pp. 21-25
Author(s):  
A. N. Lyzikov ◽  
A. G. Skuratov ◽  
Yu. P. Shpakovsky
Keyword(s):  
Computed Tomography ◽  
Liver Cirrhosis ◽  
Portal Hypertension ◽  
Multislice Computed Tomography ◽  
3D Visualization ◽  
Umbilical Vein ◽  
Therapeutic Agents ◽  
Portal System ◽  
Combined Use

Objective: to evaluate the prospects and role of the methods of imaging (ultrasound and CT) in the diagnosis of the pathogenic aspects of the development and correction of portal hypertension in liver cirrhosis. Material and methods. Patients with liver cirrhosis and portal hypertension, Doppler ultrasound, multislice computed tomography. Conclusion. The combined use of ultrasound and computed tomography facilitates tracing of the dynamics of the disclosure of portocaval anastomoses and predict the course of liver cirrhosis and portal hypertension. The application of the integrated ultrasound to determine the rate of blood flow volume in vessels of portal system and portocaval anastomosis will enable development of differential diagnostic criteria for the early diagnosis of portal hypertension. The detection of recanalized umbilical vein by means of 3D-visualization of its anatomy makes it possible to use it for delivering of therapeutic agents to the liver in its pathology.

scholarly journals Mesoatrial shunt in Budd-Chiari syndrome

2009 ◽  
Vol 66 (1) ◽  
pp. 69-73 ◽  
Author(s):  
Darko Mirkovic ◽  
Nebojsa Stankovic ◽  
Miodrag Jevtic ◽  
Miroslav Mitrovic ◽  
Milan Jovanovic
Keyword(s):  
Computed Tomography ◽  
Vena Cava ◽  
Factor V Leiden ◽  
Lower Limbs ◽  
Portal System ◽  
Hepatic Veins ◽  
Budd Chiari Syndrome ◽  
Factor V Leiden Mutation ◽  
Chiari Syndrome ◽  
The Right

Background. Budd-Chiari syndrome (BCS) represents partial or total occlusion of the hepatic veins with or without simultaneous obstruction of vena cava inferior (VCI). The symptoms of BCS are abdominal pain, hepatomegaly, ascites, varices of the abdominal wall, sometimes bleeding from the upper part of gastointestinal tract (GIT), lower limbs swelling and jaundice. Primary BSC is a relatively rare condition occurring in one per 100 000 of the population worldwide. Case report. A male patient, 25-year-old, facing tooth postextraction complications, was presented with acute BCS. On admission, physical examination revealed pale-grayish complexion, more pronounced veins over the thorax and abdomen, ascites, enlarged liver rising 8 cm below the right costal arch and having a minor pleural effusion by the right side. The patient was submitted to Doppler sonography and computed tomography (CT) that verified the right leg deep veins thrombosis, as well as the presence of a thrombus in the intrahepatic portion of the VCI. Multislice computed tomography (MSCT) showed occlusion of hepatic veins (Budd-Chiari syndrome) and thrombosis of the VCI in the retrohepatic part 6 cm long. Also, increased values of transaminases and gamma GT and reduced values of albumines and serum ferrum were registered. Molecular examination revealed Factor V Leiden mutation - heterozygote. After preoperative preparations a mesocaval shunt was made using Gore- Tex ring graft of 12 mm. Intraoperatively, the blue enlarged liver was found with almost black zones of tense capsule. After a graft making, liver congestion decreased followed by the change of colour and volume. Within postoperative course metabolic and synthetic liver functions were obvious. Conclusion. In patients with BCS medicamentous treatment does not yield adequate results, but even causes worsening of general condition. Surgical therapy in the presented patient was performed timely regarding the stage of the disease due to which irreversible liver changes were prevented while decompression of the portal system provided time overbridging up to liver transplantation.

Portal shunting and resistance to Schistosoma mansoni in 129 strain mice

Parasitology ◽  
1989 ◽  
Vol 99 (3) ◽  
pp. 383-389 ◽  
Author(s):  
P. S. Coulson ◽  
R. A. Wilson
Keyword(s):  
Schistosoma Mansoni ◽  
Post Infection ◽  
Superior Mesenteric Vein ◽  
Negative Association ◽  
Portal System ◽  
Hepatic Veins ◽  
Mesenteric Vein ◽  
Hepatic Portal System ◽  
Hepatic Portal

SummaryThe integrity of the hepatic portal vasculature was examined, relative to the resistance to Schistosoma mansoni observed in 68°0 of 129/Ola mice. The passage of microspheres to the lungs, following their injection via the superior mesenteric vein, indicated the presence of shunts in the majority of both naive and infected mice. There was a negative association between shunting of microspheres to the lungs and paucity of liver worms at 28/35 days post-infection. Schistosomula accumulated in the livers of resistant mice at a slower rate than in susceptible animals, and after day 21 relocated to the lungs. Many lung schistosomula injected via the superior mesenteric passed immediately to the lungs; the shunts thus greatly reduce the probability of trapping in the liver. Some parasites migrated back from the lungs, successfully lodged in the liver and began to feed on blood. Latex infusion demonstrated the location of large intrahepatic connections between the portal and hepatic veins. We suggest that as these liver worms grow, migrating upstream into progressively larger vessels, they reach the connections, pass out of the hepatic portal system, and relocate to the lungs. The presence of the natural shunts thus accounts for the resistant status of the mice.

Ventriculoportal Shunt, a New Transomphalic Extraperitoneal Surgical Technique in Treatment of Hydrocephalus

2017 ◽  
Vol 24 (3) ◽  
pp. 223-232 ◽  
Author(s):  
Valentin Titus Grigorean ◽  
Aurelia Mihaela Sandu ◽  
Mihai Popescu ◽  
Victor Strambu
Keyword(s):  
Cerebrospinal Fluid ◽  
Surgical Technique ◽  
Umbilical Vein ◽  
Human Subjects ◽  
Systemic Circulation ◽  
Portal System ◽  
Late Morbidity ◽  
Technical Details ◽  
Immunological Barrier ◽  
New Surgical Technique

Aim. The aim of this article was to report a new transomphalic extraperitoneal surgical technique for treatment of hydrocephalus, called ventriculoportal shunt. Materials and Methods. We performed ventriculoportal shunt on an experimental animal (pig). The particularity of ventriculoportal shunt consists in the fact that the distal end of the catheter is inserted transomphalic extraperitoneally in the portal system through reopened umbilical vein. We present technical details regarding this new surgical technique. Results and Discussion. The animal had favorable outcome, without any postoperative early or late morbidity. We discuss indications, contraindications, possible complications in humans and advantages of ventriculoportal shunt compared with ventriculocardiac and ventriculoperitoneal drainages and possibilities to avoid complications specific to classic shunt procedures. Conclusions. Ventriculoportal shunt is a new surgical technique for treatment of hydrocephalus. The distal end of the catheter introduced into reopened umbilical vein, drains cerebrospinal fluid into the portal system. Ventriculoportal shunt is safe and easy to perform. With ventriculoportal shunt specific complications of ventriculoperitoneal or ventriculocardiac drainages can be potentially avoided. Ventriculoportal shunt combines advantages of vascular shunt with those of having an immunological barrier for cerebrospinal fluid before entering the systemic circulation. Theoretically, indications for surgery are extended, and ventriculoportal shunt can be performed in patients former contraindicated for ventriculoperitoneal shunt. Further research is needed and this surgical technique must be performed on human subjects with hydrocephalus.

scholarly journals VP20.04: The fetal umbilical‐portal system in persistent right umbilical vein

2021 ◽  
Vol 58 (S1) ◽  
pp. 180-180
Author(s):  
A. Massarwa ◽  
T. Weissbach ◽  
T. Elkan Miller ◽  
L. Adamo ◽  
S. Czeiger ◽  
...  
Keyword(s):  
Umbilical Vein ◽  
Portal System

scholarly journals Incidence of umbilical vein catheter-associated thrombosis of the portal system: A systematic review and meta-analysis

2021 ◽  
Vol 13 (11) ◽  
pp. 1802-1815
Author(s):  
Iliana Bersani ◽  
Fiammetta Piersigilli ◽  
Giulia Iacona ◽  
Immacolata Savarese ◽  
Francesca Campi ◽  
...  
Keyword(s):  
Systematic Review ◽  
Umbilical Vein ◽  
Meta Analysis ◽  
Portal System ◽  
System A ◽  
Vein Catheter ◽  
Umbilical Vein Catheter

scholarly journals Estimation of the relative liver perfusion using two methods of radionuclide angiography in the patients with hemodynamic disorders in the portal system

2008 ◽  
Vol 55 (1) ◽  
pp. 11-16 ◽  
Author(s):  
V.M. Artiko ◽  
D.P. Sobic-Saranovic ◽  
S.V. Pavlovic ◽  
M.S. Perisic-Savic ◽  
M.V. Stojkovic ◽  
...  
Keyword(s):  
Liver Cirrhosis ◽  
Chronic Active Hepatitis ◽  
Esophageal Varices ◽  
Umbilical Vein ◽  
Liver Perfusion ◽  
Liver Blood Flow ◽  
Radionuclide Angiography ◽  
Portal System ◽  
Cirrhotic Patients ◽  
Very High

The aim of this study is the assessment of the relative arterial and venous contribution to the total liver blood flow (hepatic perfusion index-HPI), with two methods (S1 and S2), and estimation of their value. With this correction, HPI nonsignificantly increases (p>0.05) in all the groups of patients, with a very high correlation between the HPI(S1) and HPI(S2) values (p<0.01). In comparison to the portal perfusion in controls, values were significantly (p<0,01) lower in chronic active hepatitis and liver cirrhosis and differed between themselves (p<0.01). In the groups of cirrhotic patients with esophageal varices, sclerosated esophageal varices, recanalized umbilical vein, portal thrombosis and cavernous portal vein, portal perfusion was lower (p<0.01) than in controls, chronic active hepatitis and liver cirrhosis without collaterals. Both angioscintigraphic methods are useful for the estimation of the disturbances in the portal system. Because of the more exact estimation of the liver perfusion, S2 is recommended.

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