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.

中央静脉和血窦的受压导致它们中间的液体也受到挤压，导致门静脉高压，即门静脉的压力升高。