Portal Vein Anastomosis
Portal Vein Anastomosis - Related Videos
05:15
Portal Vein Injection: A Method to Study Cancer Metastasis to the Liver
0 Views •
2023
This video describes a surgical procedure to deliver mammary tumor cells to the murine liver via portal vein injection. This model permits the investigation of late stages of liver metastasis.
16:19
Heterotopic Auxiliary Rat Liver Transplantation With Flow-regulated Portal Vein Arterialization in Acute Hepatic Failure
0 Views •
Cited by 5 •
2014
Auxiliary liver transplantation provides a temporary support in acute hepatic failure, until regeneration of the failing liver. The heterotopic auxiliary liver transplantation (HALT) with portal vein arterialization (PVA) renders sufficient liver function. We developed an analogous technique in the rat, to examine the influence of the portal vein arterialization on the morphology and function of the graft.
03:18
In Vivo Murine Liver Perfusion: A Method to Infuse the Rodent Liver with Solution via the Portal Vein
0 Views •
2023
This video describes a procedure for mouse liver perfusion through the portal vein using collagenase solution prior to isolating liver cells.
08:47
3-Dimensional Resin Casting and Imaging of Mouse Portal Vein or Intrahepatic Bile Duct System
0 Views •
Cited by 20 •
2012
A method of visualizing and quantifying the 3-dimensional structure of mouse hepatic portal vein or intrahepatic bile duct is described. This resin cast technique can also be applied to other ductal or vascular systems and allows for in situ visualization or quantification of a system's intact communicating architecture.
08:27
Adult Mouse Venous Hypertension Model: Common Carotid Artery to External Jugular Vein Anastomosis.
0 Views •
Cited by 13 •
2015
We describe a method for creating a reliable model of cerebral venous hypertension in the adult mouse. This model has been widely described and tested in the rat. This new counterpart in the mice opens the possibility of using genetic modified animals and thereby broadens the applications of the model.
FAQs
The key physiological consequence is restoration of portal venous flow to the liver. When the joined vessels remain open, hepatic tissue receives the portal circulation needed to support perfusion and function. Thus, assessment focuses not only on whether the connection is present, but also on whether flow is maintained without narrowing or clot formation.
Microsutures or vascular sutures secure the aligned vessel ends so the connection can remain intact during blood flow. Their use supports a sealed junction while limiting leakage, narrowing, and clot formation. The quality of this secured join therefore affects whether portal circulation is restored effectively and whether the reconstructed vessel remains functional.
The main complications identified in the source are thrombosis and stenosis. Thrombosis refers to clot formation within the reconstructed connection, whereas stenosis describes narrowing that can restrict flow. Monitoring these problems matters because either complication can compromise portal venous delivery to the liver and reduce the intended benefit of the surgical repair.
The central operative steps are to align the ends of the portal vein and the receiving vessel, then secure the junction with microsutures or vascular sutures. This sequence is intended to re-establish a continuous blood-flow route while limiting leakage and preserving an adequately open passage for portal venous circulation.
This connection has an important role in liver transplantation, where surgeons join the donor and recipient portal veins. It is also used for portal vein reconstruction after vascular injury or tumor removal. In each setting, the goal is to re-establish portal circulation so the liver can receive blood and maintain its function.
In biology, studying these vascular connections allows researchers to evaluate vascular healing, blood-flow dynamics, and complications such as thrombosis or stenosis. These observations connect surgical outcomes with the behavior of repaired blood vessels. They can also help explain why maintaining portal venous flow is important for hepatic perfusion and function after reconstruction.