Upload
adam-baldric-white
View
212
Download
0
Embed Size (px)
Citation preview
1
Organ donation and allotransplantation
Jozef Virčík 003435Lisbon 2013
2
Last year, 60 people made history by participating in the longest chain of organ transplants to date, newspapers reported this week. Coordinated by 17 hospitals in 11 U.S. states, the lifesaving string of operations unfurled in August when a California man gave a kidney to an anonymous recipient. In return, that patient’s niece—a willing donor though not a match for her relative—offered a kidney to another individual on a transplant waiting list. The domino effect continued over four months as 30 Americans received kidneys thanks to donations by friends or family members to compatible strangers.
Introduction
3
800 B.C. – Indians (repairing wounds by skin transplantation)
16th Century - Gasparo Tagliacozzi (repairing nose – skin transplantation, observed immune reaction)
Early 1900s – xenotransplantation of kidneys (only few days of living)
1905 – Eduard Zirm corneal transplantation (restoring sight)
History
4
1912 - Alexis Carrell – kidney transplantation on dogs, connecting blood vessels, Nobel Prize
1936 - Yu Yu Voronoy – human kidney transplantation from dead donor – patient died in few days because of rejection of organ
1954 – Boston’s Peter Bent Brigham Hospital -After years of trying first succesful kidney transplantation between relatives – doctor received Nobel Prize, patient lived 8 more years.
History
5
1960 - Peter Medawar – Nobel Prize for discovery of acquired immune tolerance (beginning of anti-rejection drugs)
1960s – first lung, pancreas, liver transplants.
1967 – first heart transplantation (patient lived 18 days, died on pneumonia)
1984 – U.S. Congress passed the National Organ Transplant Act – central registry for organ matching, outlawing sell of organs
History
6
2005 – Baltimore Hospital – pioneered ´domino chain´ - Willing donors who are genetically incompatible with their chosen recipients are matched with strangers; in return, their loved ones receive organs from other donors in the pool.
2010 – Spain – first full face transplantation
History
7
Xenotransplantation Allotransplantation
◦ Cadevaric donor transplantation◦ Living donor transplantation
Autotransplantation
Types of Transplantation
8
1 donor (cadaveric) can save up to 8 human lives
1 donor can provide organs/tissue (corneas, blood vessels, heart valves, skin, tendons, bones) for 50 people
Facts about donation
9
Waiting list – more than 118,000 people Transplants performed – 28,000 Every 10 minutes another name is added 19 candidates on waiting list die every day 6935 die per year (13 Jumbo Jets – Boeing
747)
Statistics – U.S. (2012)
10
Waiting list – more than 7600 people Total organ transplants – 3962
◦ Deceased donors transplants– 2915 (74 %)◦ (1088 deceased donors)◦ Living donors transplants – 1047 (26 %)
Statistics – UK (2011)
11
Donor must live on (Case of father and 2 sons)
Are only subsidiary to cadaveric donor t. Prohibition of selling organs
◦ UK – Human Tissue Act (2004) Major goal of living donor liver transplants–
decrease waiting-list mortality Risk and benefit proportion Love of humanity
Living donor tranplantation
12
Advantages◦ Decrease waiting-list morality◦ Better timing for procedure (previous treatment
can be finished)◦ Lower imune reaction and lower rejection rate (in
case of relatives)
Living donor transplantation
13
Comparison of UK cadaveric transplantation (UKC), UK living donor transplantation (UKLD), US cadaveric transplantation (USC) and US living donation (USLD) for the last 10 years
[www.uktransplant.org.uk 2004, www.unos.org 2004].
Scoble J E , and Burnapp L Nephrol. Dial. Transplant. 2005;20:1034-1037
© The Author [2005]. Published by Oxford University Press on behalf of ERA-EDTA. All rights reserved. For Permissions, please email: [email protected]
14
Disadvantages◦ Huge pressure on prospective donors◦ Exploitation of donors◦ Insufficient knowledge and informedness of
donors and their families about this possibility◦ Risk of nephrectomy (kidney disease)◦ Donor lives with one kidney◦ Only subsidiary position (5% of all
transplantations)
Living donor transplantation
15
An organ or tissue donation from donor who has already died.
Cadaveric Transplantation
16
WHEN IS THE PERSON CONSIDERED DEAD? Traditional definition of death: the act of
dying; the end of life; the total and permanent cessation of all the vital functions of an organism.
Not very usable for organ donation
Fundamental question
17
General definition - complete cessation of brain function as evidenced by absence of brain-wave activity on an electroencephalogram: sometimes used as a legal definition of death.
irreversible cessation of respiration due to irreparable brain damage, even though the heart may continue beating with the aid of a mechanical ventilator: widely considered as the criterion of death. (Collins English Dictionary 2009)
This definition arise ethical questions.
Brain Death
18
UK (Code of practice)◦ Permanently lost consciousness◦ Permanently lost ability to breathe◦ Regardless of continuing life in the body and the
parts of the brain◦ Brain stem death is sufficient to produce this
state The same attitude in India and Trinidad &
Tobago
Brain Death
19
The rest of the World◦ Whole brain death concept◦ Permanent cessation of all functions in all parts of
the brain. United States President’s Council on Bioethics
◦ UK concept and clinical criteria are not considered sufficient for the diagnosis of death in the USA.
Japan◦ Antipathy to the concept of brain death in the
World, only non-heart beating donations are performed legally.
Brain Death
20
Mandatory organ donation Opt-in system
◦ Potential donors must express their consent during the life, otherwise they do not donate their organs.
Opt-out system◦ There is presumptive consent from every person,
unless the person expresses refusal to donate (opt-out).
Systems of consent
21
USA UK Portugal
Slovakia
Opt-in system
X X
Opt-out system
X XRespect of
family’s decision
Opt-in vs. Opt-out system
Opt-in system : Germany, GreeceOpt-out system : Austria, Spain, Sweden, Belgium
22
Opt-in◦ Lower percent of population sign the consent (90
percent of Americans agree with donation, but only 30 percent of them consented to donate their organs).
◦ Icky and difficult for persons to think about it.◦ Need of education and publicity in media.◦ Connection of the consent form with the issuance
of driver’s license.
Opt-in or Opt-out system?
23
Opt-out◦ Much higher percentage of cadaveric donors
(more than 90 percent).◦ People do not have to solve this issue, only if they
are strictly against it.◦ Questionable role of family.◦ Poor informed society.◦ Missing of the consent.
24
Integrity of person/individual Protection of donor’s interests Protection of patient (recipient)
◦ Transplantation must have good prognosis for donor◦ Protection from extortion (living donor, patient-recipient, family of
recipient)◦ Mutual anonymity of donor and recipient◦ Providing care after transplantation
Discussion about real death of person / brain death Unfair obtaining organs for transplants :
◦ murder, kidnap…◦ Market with organs + import from poor countries (India, Africa) –
exploitation Which organs we cannot transplant ?– identity of donor
(brain, gonad (genital organs) )
Ethical Issues of Transplantation
25
Financial advantageous of transplantation – often lower costs than medical treatment of ill person
Family acceptance of death takes a while Habits and rites Human body is not a property Unity of soul and body Biological ethic
◦ neutral value of such procedure◦ Biomass
Ethical Issues of Transplantation
26
Christianity – supports donation Jehovah's Witnesses – cancelled prohibition
of transplantations in 1967, but it is not clear, how to perform it, when blood transfusion is forbidden.
Orthodox Jewish (not reformed and liberal ones) does not allow the transplantations, which are terminating human life by human extraction.
Religion
27
Islam◦ different scholars◦ generally organ donations are not permitted ◦ some of the schools permit live donations◦ some of them also cadaveric donations, if it is not
transplantation of organ, upon which the life depend (heart, liver), because it kills the soul
◦ but not unconditionally, they have their own rules which must be fulfilled
Religion
28
Buddhism◦ Allows, but let every single person to decide on
his own◦ Tibetan Buddhists believe in consciousness after
death, and such a person/body cannot be disturbed, so cadaveric transplants are not possible for them
Religion
29
Would you provide your organ for living donation/cadaveric donation?
Do you think that brain death is sufficient for qualification of death?
Isn’t it just a type of euthanasia? Opt-in vs. Opt-out system?
Discussion
30
THANK YOU FOR YOUR ATTENTION