Liver transplantation involves replacing a diseased liver with a healthy donor liver. It is indicated for end-stage liver disease and certain liver cancers and genetic disorders. The document outlines the history, epidemiology, immunology, indications, contraindications, surgical approach, complications, and training opportunities for liver transplantation. Living donor transplantation is also discussed.
2. Outline
• Introduction
Definition
Historical perspective
Epidemiology- Nigeria, Africa and Global
• Immunology of liver transplantation
• Indications
• Contraindications
• Source of organ
• Perioperative approach
pre-op, Intra-op and post-op
• Complications
• Training opportunities and liver transplant societies/membership
• Summary
• References
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3. Introduction- Definition
• Liver transplantation is defined as the replacement of a non-
functioning liver with a functioning one.
• Liver transplantation is a form of orthotopic transplant, i.e. the
diseased organ is removed and replaced with a functioning one at the
same site.
• OLTx- Orthotopic Liver transplantation
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4. Introduction- Historical perspective
• 1952- Vittorio Staudacher described what looks like liver transplant
today
• 1955- C. Stuart Welch liver transplant in Dog
• 1956- Jack Cannon liver transplant in Dog
• 1963- Thomas Starzl started the first human liver transplant, but a
series of deaths led to a voluntary moratorium for 3.5 years
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Liver transplantation
5. Introduction- Epidemiology
• No Liver transplant services in Nigeria.
• In Africa, only 2 country has Liver transplant services: South Africa
(SA) and Egypt.
• Sudan just commenced Liver transplant services about 5month ago
• In SA, the first programme was established in 1988 at Groóte Schuur
Hospital in Cape Town and the second programme in 2004 at Wits
Donald Gordon Medical Centre (WDGMC) in Johannesburg.
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6. Introduction- Epidemiology
• Living donor liver transplant (LDLT) was first performed in Egypt in
1991 by the surgical team at the National Liver Institute (NLI),
Menoufeya University, with the help of Prof. Habib. The longest
recipient survival was 11 months
• There are thirteen LDLT centers in Egypt, including six university
centers, two military centers, three private centers and two centers in
the ministry of health hospitals.
• By the end of June 2014, the total number of cases reached 2,406.
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7. Introduction- Epidemiology
• In 2021, there were just over 9,200 liver transplant carried out in the
USA. Most liver transplants in the U.S. are among adults aged 50 to
64 years, with this age group accounting for around 45 percent of all
liver transplants in 2021.
• California had the highest number of liver transplants performed
among all U.S. states. That year, there were just over 1,000 liver
transplants performed in California. The state with the second highest
number of liver transplants was Texas.
• Liver transplants are the second most common transplant in the
United States behind kidney transplants.
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8. Immunology of liver transplantation
• Histocompatibility complex/protein
• Human leucocyte antigen (HLA)- 6q
2 types
Major- MHC- important in organ rejection
minor- miH
• HLA
• 2 types
Class I- HLA A, B and C- present in all antigen
Class II- HLA DP, DQ, DR- present in APCs
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9. Immunology of liver
transplantation
A two-signal model,
• T-cell activation begins with the
engagement of the T-cell
receptor (TCR)/CD3 complex with
the foreign molecule- signal 1.
• An additional costimulatory
signal is required. Two well-
characterized costimulatory
interactions are the CD40/CD154
and B7/CD28 pathways- signal 2
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20. Liver transplantation: Approach
• Second- to exclude any absolute or relative contraindication for Liver
transplant
Test for cardiopulmonary reserve:
CXR, FEV1, spirometry
ECG, ECHO, PAC
Tissue typing: HLA typing
other test as required
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22. Liver transplantation: Approach
• Liver allocation list by Organ Procurement Transplant Network (OPTN)
Model for End stage Liver Disease (MELD) score >12ys
Paediatric End stage Liver Disease (PELD) score <12yrs
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23. Liver transplantation: Approach
• MELD score: 3 biochemical parameter
MELD Score = 10 * ((0.957 * ln(Creatinine)) + (0.378 *
ln(Bilirubin)) + (1.12 * ln(INR))) + 6.43
Cr=4mg/dl in a patient who underwent HD in the last 7 days
any value less than 1, is given a value of 1
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24. Liver transplantation: Approach
MELD Score No of patients Mortality rate (%) Death or removal from
list because of illness
<9 124 1.9 2.9
10-19 1800 6 7.7
20-29 1098 19.6 23.5
30-39 295 52.6 60.2
≥40 120 71.3 79.3
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25. Liver transplantation: Approach
• PELD score: 3 clinical and 3 biochemical variables
PELD Score = 10 * ((0.480 * ln(Bilirubin)) + (1.857 * ln(INR)) -
(0.687 * ln(Albumin)) + 0.436(if the child is <1yr old) + 0.667(if the child
has growth failure[<2 SD])
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26. Source of organ donation
• Deceased donors
Brain death- consent from relatives
cardiac death- consent before death
• Living donors OLTx
Split liver donors- left lobe, left lateral segment/section
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27. Liver transplantation: Approach
• Living donor evaluation
laboratory:
FBC, EUC, LFT, clotting profile, a-fetoprotein, work up for
metabolic dx.
HLA typing
Imaging:
Duplex USS
CECT/MRI
Angiography
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Liver transplantation
28. Liver transplantation: Approach
• Donor surgery
Deceased donor
follow the conventional
organ procurement method
Living donor:
left lobe or left lateral
segment
piggyback donor method
After harvest, organ is perfused
with preservation solution within the
acceptable Ischaemic time for liver
tissue.
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31. Organ Package and Transportation in Liver
Graft
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• The liver is inspected in the basin.
• The first sterile bag is filled with the liver
graft and 700–1,000 mL of HTK solution
(4°C), and the bag is secured with a tie.
• It is then placed into the second sterile
bag filled with 1 L of cold normal saline
or slush ice and tied.
• The second bag is placed into the third
bag and tied. The liver in the three-
layered bag is then placed in the heat
preservation container box filled with ice
blocks for transportation.
33. Organ procurement for LDLT
• Three different types of donor hepatectomies are used for living
donor liver transplantation (LDLT), as follows:
• Left lateral hepatectomy, in which the graft consists of segments II
and III, with or without segment I
• Left hepatectomy, in which the graft consists of the whole left lobe,
segments I, II, III, and IV
• Right hepatectomy, in which the graft consists of the right lobe,
segments V, VI, VII, and VIII
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34. Liver transplantation: Approach
• Recipient hepatectomy
Bilateral subcoastal + midline extension (Mercedes-Benz incision)
all ligaments are mobilized
supra and infra hepatic vena cava is transected
hilar dissection: portal vein, HA and hepatic veins (with supra-
hepatic vena cava) and bile duct
veno-venous cannula passed from the femoral/portal to the
subclavian for those who are hemodynamically unstable
hepatectomy completed
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Liver transplantation
37. Liver transplantation:
Approach-Piggyback
technique
• IVC is not removed
• hepatic veins are divided at their
confluence before entering the
IVC.
• bypass may not be required or
partial bypass
• Adv: ↓hemodynamic instability,
good renal perfusion
• Disadv: ↑ hepatectomy time, ↑
blood loss
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39. Liver
transplantation:
Approach- LDLT
A. Hepatic transection
completed for removal of left
lateral segments (S2 and S3).
Bile ducts to segments 2 and
3 divided; vascular structures
still intact.
B. Implantation of the donor
left lobe.
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41. Post-op care
• ICU monitoring until hemodynamic stability
• Serial liver function test: transaminases
• Duplex scan to check HA, portal vein, bile flow, bleeding
• Platelet sequestration by the graft but later normalizes
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48. • Founder of Dr Rela Institute and Medical
centre in Chennei, India
• President, International Liver transplant
Society (ILTS)
• Former President, Liver Transplant society
of India (LTSI)
• www.ilts.com and become a member
• Guinness book of records
• Done over
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50. Liver transplant society
• International Liver transplantation Society
President- Prof Mohamed Rela- Owner of Rela institute &
medical centre in Chennei, India.
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51. Summary
• Liver transplantation has seen rapid development and growth from
the pioneering days of Starzl and Calne
• Today, liver transplant recipients enjoy excellent patient and graft
survival and the procedure has become routine in many centres
• Living donor LT has emerged as a viable option for patients with ESLD
• Advances in surgical technique, immunosuppression, perioperative
care have not only reduced operative morbidity/mortality, but have
also significantly improved the quality of life for the recipients
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52. References
• Charles F. Brunicardi: Schwartz’s principles of Surgery, 10th edition Chapters
33
• https://www.statista.com/statistics/954207/us-liver-transplants-by-state/
• O. James Garden and Simon Peterson-Brown: Hepatobiliary and pancreatic
surgery, a companion to specialist surgical practice, 5th edition, chapter 15
• Norman, S. W., Christopher J.K.B., and P.Ronan O’ Connell (2008). Bailey
and Love principles and practice of Surgery, 25th edition, chapter 61, 63 and
64
• Michael J Zinner and Stanley W Ashley: Maingot’s abdominal operations,
12th edition. Chapter 59
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53. • John L. R. Forsythe: Transplantation, a companion to specialist
surgical practice, 5th edition, chapter 8
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