Abstract
Adult living donor liver transplantation (LDLT) has become a life-saving procedure due to the limited availability of deceased donor organs in many parts of the world. It continues to be a technically challenging procedure and involves inherently complex ethical issues. Donor safety remains the priority; however, a successful recipient outcome after LDLT is also paramount.
The safety margin is small for both recipient and donor, each case should be tailored to the patients, and every step of the procedure must be planned and performed meticulously.
Over the last two decades, many of the issues related to the technical design of adult LDLT procedures have been solved; there does however remain room for further innovation. A better understanding of the complex surgical anatomy and physiologic differences of adult LDLT helps avoid small-for-size (SFS) graft syndrome, graft congestion from outflow obstruction, and graft hypoperfusion from portal flow steal. Size limitations of partial grafts and donor safety issues can be overcome with dual grafts and modified right lobe (MRL) grafts that preserve the donor’s middle hepatic vein trunk.
LDLT is a more complex operation than DDLT, requiring delicate dissection around the hilum as high as possible in order to obtain maximum length of individual structures, allowing for implantation of the smaller-sized living partial liver graft vessels. For technically successful LDLT, the following four conditions should be satisfied: adequate graft volume to avoid small-for-size syndrome, good outflow to avoid congestion, adequate portal inflow to enhance graft regeneration, and secure bile duct anastomosis to avoid biliary leak. However, the risk of surgical complications still remains higher when compared to DDLT. Crucial to maintaining good outcomes following LDLT is a robust multidisciplinary approach with surgical, radiological, and medical teams and a wide range of ancillary services.
Abbreviations
- 3D CT:
-
Three-dimensional computed tomography
- AS:
-
Anterior sector
- BD:
-
Bile duct
- BS:
-
Biliary stricture
- DDLT:
-
Deceased donor liver transplantation
- ERL:
-
Extended right lobe graft
- GRWR:
-
Graft-to-recipient weight ratio
- GSV:
-
Great saphenous vein
- HA:
-
Hepatic artery
- HPCS:
-
Hemiportocaval shunt
- HTK:
-
Histidine-tryptophan-ketoglutarate
- HV:
-
Hepatic vein
- IOCP:
-
Intraoperative cineportography
- IOUS:
-
Intraoperative Doppler ultrasound
- IRHV:
-
Inferior right hepatic vein
- IVC:
-
Inferior vena cava
- LDLT:
-
Living donor liver transplantation
- LHA:
-
Left hepatic artery
- LL:
-
Left liver
- MELD:
-
Model for end-stage liver disease
- MHV:
-
Middle hepatic vein
- MRI:
-
Magnetic resonance imaging
- MRL:
-
Modified right lobe
- PTFE:
-
Polytetrafluoroethylene
- PV:
-
Portal vein
- RHA:
-
Right hepatic artery
- RL:
-
Right liver
- SFS:
-
Small-for-size
- SHV:
-
Short hepatic vein
- UW:
-
University of Wisconsin
- V5:
-
Middle hepatic vein tributaries of segment 5
- V8:
-
Middle hepatic vein tributaries of segment 8
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Lee, SG., Moon, DB. (2017). Live Donor Liver Transplant. In: Doria, C. (eds) Contemporary Liver Transplantation. Organ and Tissue Transplantation. Springer, Cham. https://doi.org/10.1007/978-3-319-07209-8_5
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DOI: https://doi.org/10.1007/978-3-319-07209-8_5
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