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In most situations, the recipient liver is respected and, if so, the transplanted heterotopic liver is known as the ��auxiliary liver��. The HLT is often a legitimate substitute to orthotopic liver transplant in each acute hepatic insufficiency and continual hepatic insufficiency. Even so, better know-how continues to be necessary in terms of postoperative complications to facilitate its diffusion for the human clinical location. The growth of microsurgical techniques was the decisive factor for disseminating the realization on the HLT in rats[45,68-70]. In this animal, quite a few techniques are described for HLT which have been differentiated by the vascularization in the graft (portal, arterial or arteria-portal), the venous drainage (through the SH-IVC or even the IH-IVC), the sort of portal blood (splanchnic or systemic), the biliary drainage (by choledochoduodenostomy or choledochojejunostomy), the localization with the graft (intra- or extra-abdominal) plus the mass of hepatic parenchyma (complete liver or partial liver transplant). PARTIAL HETEROTOPIC LIVER TRANSPLANTATION The donor operation is much like that described previously in orthotopic liver transplant. But, inside the hepatic hilum, the vascular structures along with the bile ducts corresponding to the middle along with the left lateral lobes are ligated when a partial heterotopic liver transplant is carried out. In this instance, the interlobular IVC, involving the cranial and caudal lobes, is additionally ligated[45]. The abdominal aorta is clamped at its proximal finish and is cannulated at its distal finish. Then, hepatic arterial perfusion is initiated which has a hypothermic preservation resolution. The effluent drains through a venotomy carried out during the IH-IVC. Following, the donor liver perfusion is initiated with the portal vein. Lastly, the graft is explanted[45,60,70]. The in vitro preparation, or ��bench surgery��, with the graft includes putting a cuff around the portal vein and also a ligature or suture around the proximal end with the abdominal aorta. From the recipient, the portal vein is dissected along its complete length along with the gastroduodenal vein is ligated and sectioned. The IH-IVC is dissected between the drainage with the renal veins. The ends with the dissected IH-IVC are clamped. About the anterior wall of the clamped IH-IVC, a 4mm prolonged oval venotomy is carried out. The graft is removed through the hypothermic container and placed inside the abdominal cavity on the recipient with all the ideal lateral lobe cranially and also the caudate lobe caudally. An end-to-side anastomosis is carried out by microsurgical suture method amongst the IH-IVC with the donor along with the IH-IVC of the recipient making use of 8/0 monofilament thread[69]. The moment the anastomosis is completed, a bull-dog is positioned within the donor IH-IVC to avoid reflow of venous blood to the graft when the recipient IH-IVC is unclamped to avoid hypovolemic shock. Next, the end-to-end portal anastomosis is carried out using the cuff technique[45].

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