Objective:To analyze the APR triangle formed when the right hepatic vein (RHV) passed through the right anterior hepatic pedicle (RAHP) and the right posterior hepatic pedicle (RPHP) by 3D visualization technique.Methods:Clinical data of 100 subjects undergoing liver contrast-enhanced CT scan in the Second Affiliated Hospital of Harbin Medical University from September 2019 to September 2022 were retrospectively analyzed, including 57 males and 43 females, aged (53.2±13.0) years. The CT data were imported into a system for 3D image reconstruction of the liver. The intrahepatic vascular structure was observed, including the portal vein, APR triangle, the angle between the RAHP and RPHP, the distance between RHV and the vertex of angle when it crosses the angle plane of the RAHP and RPHP, the structure and branches of the right posterior branch of portal vein, and the number of branches into the APR triangle from the main trunk of the right anterior and right posterior portal vein.Results:The main type of portal vein was type A (the main portal vein was divided into left and right branches, and the right branch was further divided into right anterior branch and right posterior branch), in 86 cases (86.0%). The APR triangle was observed in 81 cases (81.0%), and the distance between the right hepatic vein and the vertex of the right anterior and right posterior hepatic pedicle was (1.70±0.36) cm, 1.00-2.00 cm was 82.7%(61/81). The angle between right anterior and right posterior hepatic pedicle was 45°-90° in 77 cases (77.0%, 77/100). In 100 subjects, the main branch of the right posterior portal vein accounted for 42.0% (42/100) of typeⅠ (bifurcation type) and 53.0% (arch type) of type Ⅱ (53/100). In 16 cases (19.8%, 16/81), the main right anterior portal vein branched into the APR triangle, with a total of 22 branches. In 9 cases (11.1%, 9/81), the main branch of the right posterior portal vein (branching type) branched into the triangle, with a total of 11 branches. There were 33 cases (40.7%, 33/81) of right posterior portal vein (arch type) main branch branching into the triangle, a total of 41 branches.Conclusion:The APR triangle, composed of the RAHP, RPHP and RHV, has an objective anatomical basis and is affected by the variants of portal vein and RHV. It is more common for the RHV to be within 1.00-2.00 cm of the vertex of the angle between the RAHP and RPHP, and the main trunk of the right anterior and right posterior branches of portal vein are less divided into the triangle, so it is relatively safe to dissect within this area.

Objective:To analyze the APR triangle formed when the right hepatic vein (RHV) passed through the right anterior hepatic pedicle (RAHP) and the right posterior hepatic pedicle (RPHP) by 3D visualization technique.Methods:Clinical data of 100 subjects undergoing liver contrast-enhanced CT scan in the Second Affiliated Hospital of Harbin Medical University from September 2019 to September 2022 were retrospectively analyzed, including 57 males and 43 females, aged (53.2±13.0) years. The CT data were imported into a system for 3D image reconstruction of the liver. The intrahepatic vascular structure was observed, including the portal vein, APR triangle, the angle between the RAHP and RPHP, the distance between RHV and the vertex of angle when it crosses the angle plane of the RAHP and RPHP, the structure and branches of the right posterior branch of portal vein, and the number of branches into the APR triangle from the main trunk of the right anterior and right posterior portal vein.Results:The main type of portal vein was type A (the main portal vein was divided into left and right branches, and the right branch was further divided into right anterior branch and right posterior branch), in 86 cases (86.0%). The APR triangle was observed in 81 cases (81.0%), and the distance between the right hepatic vein and the vertex of the right anterior and right posterior hepatic pedicle was (1.70±0.36) cm, 1.00-2.00 cm was 82.7%(61/81). The angle between right anterior and right posterior hepatic pedicle was 45°-90° in 77 cases (77.0%, 77/100). In 100 subjects, the main branch of the right posterior portal vein accounted for 42.0% (42/100) of typeⅠ (bifurcation type) and 53.0% (arch type) of type Ⅱ (53/100). In 16 cases (19.8%, 16/81), the main right anterior portal vein branched into the APR triangle, with a total of 22 branches. In 9 cases (11.1%, 9/81), the main branch of the right posterior portal vein (branching type) branched into the triangle, with a total of 11 branches. There were 33 cases (40.7%, 33/81) of right posterior portal vein (arch type) main branch branching into the triangle, a total of 41 branches.Conclusion:The APR triangle, composed of the RAHP, RPHP and RHV, has an objective anatomical basis and is affected by the variants of portal vein and RHV. It is more common for the RHV to be within 1.00-2.00 cm of the vertex of the angle between the RAHP and RPHP, and the main trunk of the right anterior and right posterior branches of portal vein are less divided into the triangle, so it is relatively safe to dissect within this area.

Objective:To summarize the perioperative nutrition management,improve the successful rate in liver transplantation patients and reduce the complications after operation.Methods:A retrospective analysis of the perioperative nutrition treatment was made in 71 cases with liver transplantation.The principle of enteral nutrition before operation was appropriate energy,protein and rich vitamin,and the branched-chain amino acid(BCAA) and glutamine(Gln) were supplied.Intravenous nutrition,early enteral nutrition and total enteral nutrition support were applied during the postoperation period.Results: Except 5 cases that died from respiratory failure and 2 died from hemorrhagic shock respectively,other 64 cases recovered gradually in liver function,and their nutrition indices were enhanced significantly.Conclusion:The perioperative nutrition management is very necessary for liver transplantation patients,and the appropriate nutrition support is helpful to rehabilitate the function of graft organ and the nutritional status of the recipients as possible as early.