**Core Concept**
TIPSS (Transjugular Intrahepatic Portosystemic Shunt) is a minimally invasive procedure used to treat complications of portal hypertension, such as variceal bleeding and refractory ascites. The procedure involves creating a shunt between the hepatic vein and a branch of the portal vein to reduce portal pressure.

**Why the Correct Answer is Right**
The correct answer involves the percutaneous creation of a shunt between the hepatic vein and the portal vein. The hepatic vein is a major vein that drains blood from the liver into the inferior vena cava, while the portal vein carries blood from the gastrointestinal tract and spleen to the liver. By creating a shunt between these two veins, the pressure in the portal system is reduced, thereby alleviating the complications of portal hypertension. This is achieved by advancing a needle through the jugular vein into the hepatic vein, and then placing a stent to maintain the shunt.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because TIPSS does not involve creating a shunt between the hepatic artery and the portal vein. The hepatic artery supplies oxygenated blood to the liver, whereas the portal vein supplies deoxygenated blood.
* **Option B:** This option is incorrect because TIPSS does not involve creating a shunt between the inferior vena cava and the portal vein. The inferior vena cava is a major vein that drains blood from the lower body into the right atrium, whereas the portal vein carries blood from the gastrointestinal tract and spleen to the liver.
* **Option D:** This option is incorrect because TIPSS does not involve creating a shunt between the hepatic vein and the splenic vein. The splenic vein carries blood from the spleen to the portal vein, whereas the hepatic vein drains blood from the liver into the inferior vena cava.

**Clinical Pearl / High-Yield Fact**
TIPSS is a valuable treatment option for patients with refractory ascites and variceal bleeding, particularly those who are not responding to medical therapy. The procedure can be performed in a matter of hours, and the patient can often be discharged from the hospital within a few days.

**Correct Answer:** C. the hepatic vein and a branch of the portal vein.