You may be advised to undergo this procedure if you are at risk of or already have gastric variceal bleeding and hepatic encephalopathy as well as a gastrorenal shunt. Finally, the balloon will be deflated and the interventional radiologist will withdraw the catheter. This medication will remain in the vessel for a short period of time, and will then be removed under fluoroscopy.Īnother venography will then be performed, to confirm that the blood flow in the shunt has stopped. A medication will then be injected into the dilated vessels through the catheter, until they are completely filled. This will allow the interventional radiologist to confirm exactly which vessels need to be treated and if there are any other abnormal or dilated vessels which have not previously been identified. The interventional radiologist will then perform a venography, which is a type of imaging technique in which X-rays are used to see the vessels clearly. The catheter is then directed to the gastrorenal or gastrocaval shunt and the balloon is expanded to block the shunt. The interventional radiologist will insert a balloon catheter (a thin, flexible tube with a tiny balloon at one end) through a vein in your thigh or neck and guide the catheter to the liver using fluoroscopy for guidance.
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