Liver Transplant Clinical Outcomes
Introduction
The liver is the largest organ in the body. It is found in the right
upper abdomen, to the right of the stomach and behind the ribs. It is a
very complex organ and has over 400 functions. Some major functions
include storage of energy (glucose), vitamins, iron, and other
minerals; making proteins, removal of chemically changing drugs,
alcohol, processing of worn out red blood cells, bile production and
killing of germs that enter the body through the intestine.
The liver is also able to regenerate itself. But when illness causes
permanent and irreversible damage to the liver, transplantation might
be an option to help maintain life. The first actual transplant was
performed in the 1960s, and has become a standard form of therapy in
the 1990s. The successes of transplantation have been due largely to
major advances in surgical techniques, and new drugs preventing
rejection of the new liver.
Reasons for Liver Transplantation
Medical treatment is always the first choice of therapy for liver
diseases and liver damage. Only when all other forms of treatment have
been unsuccessful and when the patient's liver can no longer support
life will liver transplants be considered. This is also known as end
stage liver disease.
Several
conditions that cause chronic or continuing liver inflammation are more
commonly treated with transplantation. Severe, irreversible and
advanced scarring of the liver (i.e. cirrhosis) also leads to end stage
liver disease. The following conditions are the most common causes of
end stage liver disease:
- Chronic viral hepatitis B and C
- Primary sclerosing cholangitis
- Primary biliary cirrhosis
- Alcohol related liver disease
- Autoimmune hepatitis
- Steatohepatitis
- Liver disorders inherited or present at birth
- Drug induced liver damage
Transplant Centres
Transplant centres are dedicated that have teams of surgeons and other
professionals to evaluate and select patients, and perform surgery and
follow-up care. In addition, they also maintain close communications
with transplant candidates and the network that rations the livers as
they become available.
Members of the transplant team include:
- Hepatobiliary Surgeons: trained in the field of transplantation
- Hepatologists: Liver specialist overseeing medical needs during the transplant period.
- Transplant Coordinators: registered nurses who perform evaluations, education and post-operative follow-ups.
-
Transplant Social Workers: provides support for the patient and his/her
family in dealing with stress and issues associated with chronic
illness and transplantation
-
Intensivists: Specialists in Intensive Care Unit who take care of
transplant patients immediately after transplant while they are still
at the Intensive Care Unit
- Anaesthetists: Specialist anaesthetists who take special care before, during, and after transplant surgery
- Psychiatrists: assess suitability of potential transplant donors and recipients psychologically
Survival
rates depend a lot on the underlying disease of the recipient. Primary
cancer of the liver has the lowest long-term survival at about 50%-60%1. Primary biliary cirrhosis and primary sclerosing cholangitis have survival rates of over 90%1.
Liver Transplants in NUH
The National Liver Transplant Center started at the National University
Hospital since 1990. It is run by a multidisciplinary team comprising
of transplant hepatologists, gastroenterologists, intensivists,
transplant liver surgeons, and other staff.
To
date, more than 100 liver transplants were performed at our unit. We
are also the national tertiary referral centre for patients with
complicated or severe liver diseases.
Commonest
indications of liver transplants at our centre were liver cancer, and
decompensated liver cirrhosis from chronic hepatitis B. Our 5-year
survival is 78%2, which is better than international standards (5-year survival for non-emergency transplant in the U.S. was 68-86%3).
Footnotes
- Liver Transplant, Jackson Gastroenterology, Chek Med Systems®, Inc; 2002
- Wai CT, et al. LIVER TRANSPLANTATION IN SINGAPORE 1990-2004. Singapore Medical Journal 2006 (In press)
- The Organ Procurement and Transplantation Network, United Network for Organ Sharing
This material does not cover all information and is not intended as a
substitute for professional care. Please consult with your physician on
any matters regarding your health.