Surgical treatment of intrahepatic portosystemic shunts (iPSS) is challenging. Frequently, multiple interventions are needed to avoid portal hypertension and to achieve a complete closure. Complications seen in catheter-assisted embolization with commercial coils include coil migration, portal hypertension (rapid thrombotic occlusion), and incomplete occlusion. Attenuation of hepatic vein by means of stent-supported coil embolization may lead to the development of intrahepatic venous collaterals. Inthe present study we postulated that implantation of a single prototype coil combined with immediate unfractionated heparin therapy (UHT) is an effective treatment for iPSS in dogs and has fewer complications than reported with open surgery.
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