Now, the portal venous system comprises of the portal vein and its tributaries, namely the Splenic and Mesenteric veins.

门脉统由门脉和其支流组成，包括脾脉和肠脉。

But in some situations, an obstruction may prevent blood flow from the portal vein towards the inferior vena cava.

但有时从门脉流到下腔脉的血流会受阻。

The most common pre-hepatic cause is portal vein obstruction, like when there's a thrombus occluding the portal vein and blocking blood flow.

最常见的肝前型病因是门脉阻塞，例如当有栓子阻塞门脉血流时。

With TIPS, a tube is inserted via a catheter to allow communication between the portal vein and hepatic vein.

使用TIPS时，可通过小管插入大管，以实现门脉和肝脉之间的连通。

This happens when there's an obstruction in the passage of blood from the portal vein towards the vena cava.

当血液从门脉流向腔脉的通道阻塞时，就会发生这种情况。

It was a lucky shot (or unlucky, depending on your point of view, I guess) , hitting the portal vein and killing her.

她很幸运（也许你会说不幸，视你的观点），中了大动脉致死亡。

Protein C or protein S deficiency is also sometimes suspected when a venous thromboembolism develops in an unusual site like the portal, mesenteric, or cerebral veins.

当脉血栓栓塞出现在不常见的部位时，也要怀疑蛋白C或蛋白S缺乏症，比如门脉、肠脉或脑部脉。

Higher portal vein pressure means that fluid in blood vessels is more likely to get pushed into tissues and across tissues into large open spaces like the peritoneal cavity.

较高的门脉压力意味着血管中的液体更容易穿透血管壁，被挤压进入组织，更有甚者穿过组织，进入更大的开放空间，如腹腔。

As the central veins and sinusoids become compressed and push on the fluid inside, their pressure starts to build up, leading to intrasinusoidal (or portal) hypertension, which is this higher pressure in the portal veins.

中央脉和血窦的受压致它们中间的液体也受到挤压，致门脉高压，即门脉的压力升高。

The gold standard for determining if there is portal hypertension is obtaining a hepatic venous pressure gradient measurement where a catheter is inserted inside the inferior vena cava and then inside the portal vein to measure the difference between both pressures.

确是否存在门脉高压症的金标准是测量肝脉压力梯度，即将管先后插入下腔脉、门脉内测量两个压力之间的差异。

Here's a pretty basic layout of the basic functional unit of the liver, you've got the portal vein and hepatic artery that combine into a sinusoid, which then goes into the central vein, and these are all lined with hepatocytes.

这是一个肝脏基本功能单位的简单示意图，你可以看到由门脉和肝动脉来的血液在血窦汇集，然后流入中央脉，这些都与干细胞相平行。