Organ
Donation
Where do donor livers come from?
Donor livers are obtained from individuals who have suffered catastrophic
brain injuries or brain hemorrhage. These individuals have been declared
dead due to the lack of function of the brain. When such an individual
is identified, consent for organ removal is obtained from their next
of kin. Information about the donor is entered into a national computer
network and local, regional and national lists of potential recipients
for the donor organs are obtained by the local organ procurement organization.
The group that maintains the national computerized transplant network
is called the United Network for Organ Sharing (UNOS). This organization
has the government contract to match donors with patients who require
transplantation. Within each local area, there are organ procurement
organizations who handle the identification and removal of transplantable
organs from brain-dead individuals and also ensure that these organs
are placed according to criteria established by UNOS.
Do donor and recipient have to be matched by tissue type, sex, age,
etc.?
No. For liver transplants, the only requirements are that the recipient
and the donor need to be of a compatible size and compatible blood
type. No other matching is necessary. It is possible at present to
take parts of larger livers and place them into smaller children. These
procedures are called reduced-size transplants. Livers grow and these
transplanted livers develop normally with the growing child.
What happens if there are two suitable recipients for a donated liver?
The national waiting list has been devised to give priority to the
sickest patient. The present system includes a medical status for all
potential liver transplant recipients. This system is a four-tiered
status system with Status One patients being the most critically ill
and status Four the least in need of transplantation. When a donor
liver is available, it is preferentially given to the higher status
patient. Within a given status, patients are prioritized based on their
waiting time. Many other factors may influence the decision about who
gets a particular donor liver. These include donor size, blood type,
and the possibility of performing a reduced size transplant (transplanting
only a part of the liver).
How can I donate my organs?
If you wish to be an organ donor, carry an organ donor card and place
an organ donor sticker on your medical identification card. Most importantly,
you must discuss the decision about organ donation with your family
members. At the time of organ donation, you will be unable to communicate
your wishes and your family will be asked to provide for consent. Unless
you have discussed it with your family, it will be more difficult for
them to make the decision about donating your organs. |