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1.
Surg Today ; 54(2): 205-209, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37516666

RESUMO

We reported previously that a large vertical interval between the hepatic segment of the inferior vena cava (IVC) and right atrium (RA), referred to as the IVC-RA gap, was associated with more intraoperative bleeding during hemi-hepatectomy. We conducted a computational fluid dynamics (CFD) study to clarify the impact of fluid dynamics resulting from morphologic variations around the liver. The subjects were 10 patients/donors with a large IVC-RA gap and 10 patients/donors with a small IVC-RA gap. Three-dimensional reconstructions of the IVC and hepatic vessels were created from CT images for the CFD study. Median pressure in the middle hepatic vein was significantly higher in the large-gap group than in the small-gap group (P = 0.008). Differences in hepatic vein pressure caused by morphologic variation in the IVC might be one of the mechanisms of intraoperative bleeding from the hepatic veins.


Assuntos
Veias Hepáticas , Veia Cava Inferior , Humanos , Veia Cava Inferior/anatomia & histologia , Veias Hepáticas/anatomia & histologia , Hidrodinâmica , Fígado/diagnóstico por imagem , Hepatectomia/métodos
2.
J Hepatobiliary Pancreat Sci ; 30(6): e31-e35, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36401822

RESUMO

Two versus 1 venous reconstruction is sometimes required for Hepato-Biliary-Pancreatic and Transplantation surgery. V-shape venoplasty is considered to be useful knack of unification method during 2 versus 1 venous reconstruction in clinical practice. The usefulness of V-shape unification venoplasty was proven by the present computational fluid dynamics study.


Assuntos
Transplante de Fígado , Procedimentos de Cirurgia Plástica , Humanos , Transplante de Fígado/métodos , Hidrodinâmica , Doadores Vivos , Procedimentos Cirúrgicos Vasculares/métodos
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