In TIPS, what is advanced following the venous structures until it reaches a specific vein?

• A. A catheter
• B. A guidewire
• C. A balloon
• D. A stent

Answer: (A)

In Transjugular Intrahepatic Portosystemic Shunt (TIPS) procedures, a catheter is advanced through the venous structures to reach a designated vein. This technique is critical because the catheter allows for the introduction of other tools or devices needed to create the shunt between the portal vein and the hepatic vein.

The catheter is designed to navigate the complex venous anatomy of the liver and facilitate access to target vessels with precision. This maneuvering is essential for the successful placement of the TIPS, as it ensures that the catheter accurately reaches the hepatic vein from which the shunt will be performed, connecting it to the portal circulation.

While guidewires might be used within the procedure to aid in the placement of the catheter or to manage navigation, it is primarily the catheter that is advanced through the veins to enable the critical connection necessary for TIPS to decompress portal hypertension. The other options—balloon and stent—are devices used in conjunction with the catheter but do not serve as the primary instrument for advancing through venous structures in this context.