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

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.

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 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.

Ultrastructure of the Omphalomesenteric Duct Rest in the Umbilical Cord at Term

1982 ◽  
Vol 40 ◽  
pp. 250-251
Author(s):  
B. A. Clark ◽  
T. Okagaki
Keyword(s):  
Umbilical Cord ◽  
Umbilical Vein ◽  
Meckel’S Diverticulum ◽  
Meckel's Diverticulum ◽  
Columnar Epithelium ◽  
Omphalomesenteric Duct ◽  
Umbilical Arteries

Vestiges of the omphalomesenteric or vitello-intestinal duct and the pathologic implications attributed to these remnants have been treated in great detail by several investigators. Persistence of the omphalomesenteric duct is associated with such conditions as Meckel's diverticulum, umbilical fistula, mucosal polyps, and sinuses or cysts of the umbilicus. Remnants of the duct in the umbilical cord, although infrequent, are located outside of the triangle formed by the two umbilical arteries and the umbilical vein, are usually discontinuous and are often represented by a small lumen lined by cuboidal or columnar epithelium. This study will examine the ultrastructure of these cells.

Ultrastructural observations on the in vitro cytoadherence of Plasmodium falciparum infected red blood cells

1990 ◽  
Vol 48 (3) ◽  
pp. 914-915
Author(s):  
D.J.P. Ferguson ◽  
A.R. Berendt ◽  
J. Tansey ◽  
K. Marsh ◽  
C.I. Newbold
Keyword(s):  
Plasmodium Falciparum ◽  
Red Blood Cells ◽  
Blood Cells ◽  
Umbilical Vein ◽  
Cell Types ◽  
Amelanotic Melanoma ◽  
Cytoplasmic Process ◽  
Umbilical Vein Endothelial Cells

In human malaria, the most serious clinical manifestation is cerebral malaria (CM) due to infection with Plasmodium falciparum. The pathology of CM is thought to relate to the fact that red blood cells containing mature forms of the parasite (PRBC) cytoadhere or sequester to post capillary venules of various tissues including the brain. This in vivo phenomenon has been studied in vitro by examining the cytoadherence of PRBCs to various cell types and purified proteins. To date, three Ijiost receptor molecules have been identified; CD36, ICAM-1 and thrombospondin. The specific changes in the PRBC membrane which mediate cytoadherence are less well understood, but they include the sub-membranous deposition of electron-dense material resulting in surface deformations called knobs. Knobs were thought to be essential for cytoadherence, lput recent work has shown that certain knob-negative (K-) lines can cytoadhere. In the present study, we have used electron microscopy to re-examine the interactions between K+ PRBCs and both C32 amelanotic melanoma cells and human umbilical vein endothelial cells (HUVEC).We confirm previous data demonstrating that C32 cells possess numerous microvilli which adhere to the PRBC, mainly via the knobs (Fig. 1). In contrast, the HUVEC were relatively smooth and the PRBCs appeared partially flattened onto the cell surface (Fig. 2). Furthermore, many of the PRBCs exhibited an invagination of the limiting membrane in the attachment zone, often containing a cytoplasmic process from the endothelial cell (Fig. 2).

Patterns of Collateral Circulation in the Portal System Following Extrahepatic Inflammatory Processes

1952 ◽  
Vol 21 (3) ◽  
pp. 375-381 ◽  
Author(s):  
Abbott Y. Wilcox ◽  
Edwin G. Bovill ◽  
Renzo G. Olivetti
Keyword(s):  
Collateral Circulation ◽  
Portal System ◽  
Inflammatory Processes
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