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Major Hepatectomy clinical trials

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NCT ID: NCT04370132 Completed - Major Hepatectomy Clinical Trials

Segment IV Hypertrophy After Liver Venous Deprivation

Start date: January 1, 2015
Phase:
Study type: Observational

before major hepatectomy, in case of insufisant future liver remanent volume or function, portal embolization is a routinely used method to enable growth of the future liver remnant. Recently liver venous deprivation has been described in some pioneer centre. The results are processing with greater and faster hypertrophy allowing probably less drop out from the embolization to surgery compared to portal embolization. In major hepatectomy, and specially in right or extended right hepatectomy the segment IV plays an important role in the proportion of future liver remnant. Despite the growing interest in the scientific community for liver venous deprivation many aspects concerning the liver hypertrophy remains unexplored. In particular the the degree of hypertrophy of segment IV after liver venous deprivation compared to portal embolization.

NCT ID: NCT03762876 Recruiting - Major Hepatectomy Clinical Trials

Evaluation of Trans-Hepatic Flow Changes in Major Hepatectomy

THEFLOW
Start date: March 25, 2018
Phase:
Study type: Observational

Changes in trans-hepatic flow after major and extended hepatectomy (EH) can lead to small for size and flow syndrome (SFSF), which is associated with a significantly higher rate of morbidity and mortality. The current therapies for SFSF are not effective because tissue damage following SFSF is usually irreversible and the liver parenchyma loses the ability to regenerate. Therefore, the best approach to improve patient survival is to predict SFSF and perform adequate intraoperative preventive procedures. Portal vein flow (PVF), hepatic artery flow (HAF), and portal vein pressure (PVP) are the main criteria for development of SFSF after living donor liver transplantation. The mechanisms that change trans-hepatic flow are similar after hepatectomy and living donor liver transplantation. Trans-hepatic flow is routinely measured during liver resection, but the effect of these changes on SFSF has not been studied. Identifying the factors that alter trans-hepatic flow after hepatectomy would allow hepatic inflow to be modulated before and after surgery, to prevent SFSF. Trans-hepatic flow and pressure parameters (PVF, HAF, and PVP) are routinely measured and monitored during liver resection. The aim of the proposed study is to analyze changes in these parameters after major hepatectomy and determine the factors that alter trans-hepatic flow after hepatectomy.

NCT ID: NCT02390713 Recruiting - Liver Failure Clinical Trials

Pneumatic Reversible Portal Vein Diameter Modulation After Major Hepatectomy

MODHEP1
Start date: April 18, 2015
Phase: Phase 1/Phase 2
Study type: Interventional

This ring aimed to preserve an intra-hepatic porto-caval gradient inferior to 5 mm Hg during and after major hepatectomy (48h) to protect the liver during the initial phases of liver regeneration. Morphological features of MID-AVRTM allow its intra corporeal opening and percutaneously removal after an balloon inflation with 5 ml of physiological serum. MID-AVRTM had been developed in pig where it had proved its efficiency to improve liver function after 75% hepatectomy and its capacity to be removed percutaneously. Aim of this feasibility study (Phase I/II) is to prove in series of 3 evaluable patients (Phase A) then 6 evaluable patients (Phase B) that MID-AVRTM could be used in human without deleterious consequence. In phase A, MID-AVRTM is dispose around the portal vein before and during a major hepatectomy performed on healthy liver and removed before abdominal closure. If phase A results confirmed that MID-AVRTM well modulates portal pressure and is easily opened and removed by acute inflation, the phase B will be started. In phase B, MID-AVRTM will be dispose around the portal vein before major hepatectomy on healthy liver and conserved 48 hours before to be removed percutaneously at the operating room.