Doppler Ultrasonography in Assessment of Graft Hemodynamics After Living-Donor Liver Transplantation

NCT ID: NCT03893773

Last Updated: 2019-03-28

Basic Information

• Recruitment Status: UNKNOWN
• Total Enrollment: 50 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2019-04-01
• Study Completion Date: 2021-06-30

Brief Summary

Graft ischemia after liver transplantation is associated with a high incidence of morbidity and mortality . The overall incidence of vascular complications in adults varies widely among transplant centers worldwide, but remains around 7% in various series of deceased donor liver transplantation (DDLT), and around 13% involving living donor liver transplantation (LDLT) Vascular complications include; hepatic artery thrombosis and stenosis, portal vein thrombosis and stenosis, caval and hepatic veins obstruction, arterial pseudo aneurysm. Biliary complications include; biliary leakage, stricture and obstruction .

Detailed Description

Hepatic artery thrombosis (HAT) is the most severe and frequent complication represents more than 50% of all arterial complications. Early HAT occurring within 1 month post-operation in 2.9%, and late HAT in 2.2%. The overall mortality rate for patients with early HAT is about 33% (13).

Hepatic arterial stenosis can occur immediately postoperative or later with an incidence of 1% to 2% and has been suggested to progress to HAT. This is due to surgical technique or fibrotic healing (14).

Hepatic artery aneurysm or pseudoaneurysm is rare and has an incidence of 0.27-3%. They occur in the second or third post-transplant week after infection caused by biliary sepsis, intestinal perforation, anastomotic leak, or intrahepatic stenting, or technical failure .

Portal vein thrombosis (partial or complete) or stenosis has an incidence of 2-3%, it can occur early postoperative within 1 month or more late. Early portal vein thrombosis can lead to liver insufficiency and failure. Late presentation, depending on the collateral circulation, can lead to portal hypertension with varices and ascites .

Currently, transplant outflow obstruction by kinking, stenosis or thrombosis of the inferior vena cava (IVC) or hepatic vein, especially in LDLT, are relatively uncommon complications following liver transplantation with an reported incidence of less than 3%. The main risk factor is a technical error in the creation of the anastomosis Despite all the advances in transplant patient care and surgical techniques, biliary complications remain high incidence in living donor or split liver transplant. There are early and late complications, and there are anastomotic, and nonanastomotic biliary complications, such as stones, sludge and casts .

Conditions

Liver Transplant, Complications

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Interventions

doppler ultrasonagraphy

The following parameters will be measured:

Hepatic artery Resistance index (HARI), Diameter, peak systolic velocity (HAPSV, cm/s).

Portal vein peak velocity (PVPV) and diameter at the anastomotic and non-anastomotic sites.

Hepatic vein peak velocity and wave form

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

• Adults more than 18 y with living donor liver transplantation in Al-Rajhi liver hospital, Assiut, Egypt

Exclusion Criteria

• Pediatric liver transplantation

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 70 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

ZRMohamed

OTHER

Sponsor Role: lead

Responsible Party

ZRMohamed

assistant lecturer

Responsibility Role: SPONSOR_INVESTIGATOR

Other Identifiers

DAGHALDLTAL

Identifier Type: -

Identifier Source: org_study_id