Living donor Liver transplant must be resorted to when the patient, given
his/her seriously compromised health conditions, cannot comply with long waiting
times. The mainstream choice is still cadaveric transplantation, but living
donation can be a valid option when no other solutions are available.
Living
donor transplantation has a number of advantages, namely the fact that the organ
procured is healthy, and there has been no need to artificially balance its hemodynamic
instability in the ICU, typical of brain-death donors. Also, the procured liver
portion is preserved (cold ischemia) only for a few minutes before it is grafted,
as compared to the several-hour long ischemia required with cadaveric donors
(the surgery takes place simultaneously in two adjacent operating rooms, so transport
and organ preservation play no role).
As a consequence, an organ procured from
a living donor can ensure a faster post-op functional recovery.
Living donor transplantation also allows performing an elective procedure, i.e.
to carry out the surgery when the donor and recipient are in the best possible
clinical conditions.
However, a number of risks do exist, since a living donor transplant means that
a perfectly healthy person will undergo major surgery. It represents an extreme
procedure that exposes the donor to all the surgical risks related to major
liver resection and general anesthesia.
According
to worldwide data, the mortality risk for the donor is 0.01%. To safeguard the
health of the person donating a small portion of his/her liver and to minimize
the risks, a strict criteria for selecting donors has been developed at ISMETT.
From a surgical point of view, in an adult living donor liver transplant the
right side of the donor's liver is procured and implanted in the recipient,
following the removal of the damaged organ. The liver can be split in two portions
as each lobe has its own arterial and venous vascularization and drains the
bile through two main ducts - right and left - which join up only in the last
section, outside the liver. In addition, the liver can regenerate to its original
pre-transplant size in just 3-4 weeks after the surgery (both in the donor
and in the recipient).
Two
teams simultaneously perform the operations, which last approximately 8 hours
for the donor and 10 hours for the recipient. The donor's hospital stay after
surgery is about 5-7 days, unless complications arise, which may develop in approximately
30% of cases. The donor spends the first night after surgery in the ICU and then,
in the second post-op day, is transferred to the In-Patient unit, and immediately
begins rehabilitation therapy. Normally, no blood transfusion is needed. The
donor can resume an ordinary life after 4-6 weeks.