TIPS Portosystemic Shunt
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Direct answer
Transjugular intrahepatic portosystemic shunt (TIPS) is an interventional radiology procedure in which a stent is placed between the portal and hepatic veins, creating a decompressive channel inside the liver to reduce portal hypertension. Its main indications are variceal bleeding uncontrolled by endoscopic and medical therapy and refractory ascites; it is also used for hepatorenal syndrome, hepatic hydrothorax and Budd-Chiari syndrome in selected patients. The principal complications are new or worsened hepatic encephalopathy (the trade-off of diverting portal blood past the liver) and shunt stenosis or occlusion, with covered stents improving patency — the facts NEET-PG expects.
What you must remember
- Technique: internal jugular venous puncture, catheterisation of a hepatic vein, transvenous needle puncture through liver parenchyma into a portal branch (usually right portal vein to right hepatic vein), tract dilation and covered stent deployment under fluoroscopy and portal pressure guidance.
- Goal: reduce the portosystemic gradient — commonly to below about 12 mmHg (or by at least 20% from baseline, per commonly applied thresholds) to stop variceal bleeding and reabsorb ascites.
- Principal indications: oesophageal or gastric variceal bleeding refractory to endoscopic plus pharmacological therapy; ascites refractory to salt restriction, diuretics and drainage; also bridging to transplantation, Budd-Chiari syndrome and hepatorenal syndrome in selected cases.
- Principal complication: hepatic encephalopathy — new or worsened in a notable minority of patients, related to shunted ammonia-rich blood; risk factors are age over about 65, prior encephalopathy and poor liver function.
- Other complications: shunt stenosis or thrombosis (less frequent with polytetrafluoroethylene-covered stents), hepatic failure from diverted portal perfusion, haemobilia, capsule puncture and intraperitoneal bleed, and contrast-induced kidney injury.
- Contraindications: severe congestive heart failure or tricuspid regurgitation (the shunt increases venous return), severe pulmonary hypertension, uncontrolled systemic infection or biliary obstruction, severe hepatic failure with high MELD scores (elective TIPS), and uncorrectable coagulopathy — relative rather than absolute in emergencies.
- Scoring context: rising MELD score predicts post-TIPS mortality, guiding patient selection; TIPS is physiological bridge therapy, not a cure for cirrhosis.
Common confusion
The exam contrasts TIPS with surgical shunts and with endoscopic therapy. TIPS is intrahepatic, catheter-created, and preserves future transplant surgery options, whereas surgical portocaval or distal splenorenal shunts are extrahepatic operations now rarely used. A second confusion is expecting TIPS to improve liver function — it decompresses the portal system but can precipitate encephalopathy and hepatic decompensation because portal nutrients and hepatotrophic flow are diverted. Finally, do not confuse TIPS with TIPS-like percutaneous transhepatic interventions for biliary drainage.
Exam-focused takeaway
Expect indications (refractory variceal bleed and refractory ascites) and the signature complication (hepatic encephalopathy) as one-liners, plus the vascular connection created (portal vein to hepatic vein via jugular route). Contraindications — heart failure and severe pulmonary hypertension because of increased venous return — appear as assertion-reason items. Know that covered stents improved patency and that MELD stratifies risk.
Frequently asked questions
What vessels does TIPS connect?
A branch of the portal vein (classically the right portal vein) with a hepatic vein (classically the right), via a stented tract through liver parenchyma, approached from the internal jugular vein — hence "transjugular intrahepatic".
What are the two leading indications?
Variceal bleeding that persists despite endoscopic and vasoactive drug therapy, and ascites refractory to medical management. Bridging to transplantation and Budd-Chiari syndrome are additional selected uses.
Why does hepatic encephalopathy follow TIPS?
Portal blood carrying gut-derived ammonia and other toxins bypasses hepatic detoxification through the shunt. Older age, prior encephalopathy and poor hepatic reserve raise the risk; management includes lactulose, rifaximin and, if severe, shunt reduction or occlusion.
Which contraindications matter most?
Severe heart failure, severe tricuspid regurgitation and severe pulmonary hypertension (the shunt increases preload), uncontrolled sepsis, biliary obstruction, uncorrectable coagulopathy, and advanced liver failure with very high MELD scores.
How successful is TIPS at maintaining shunt function?
Bare stents developed frequent stenosis, but modern covered (polytetrafluoroethylene) stents maintain patency substantially better, with surveillance by Doppler ultrasound to detect thrombosis or stenosis needing revision.