Final answer:
The TIPSS procedure is designed to reduce portal hypertension by uniting the hepatic vein and inferior vena cava.
Step-by-step explanation:
The TIPSS procedure is designed to reduce portal hypertension by uniting the hepatic vein and inferior vena cava. The hepatic portal system consists of the hepatic portal vein, which receives blood from the digestive organs, and the hepatic vein, which drains systemic blood from the liver. The TIPSS procedure involves creating a connection between the hepatic vein and the inferior vena cava to bypass the liver and reduce portal hypertension.