Since 1968, vital organs, necessary for life, have been removed from patients for transplantation into patients in whom corresponding organs have ceased to function. Since then this has been morally justified by the claim that the donor is “brain dead” or has suffered “cardiac death.” Brain death is defined as complete and irreversible loss of all brain function, and cardiac death is declared two to five minutes after cessation of the heartbeat.
The moral problem is that the criteria used to declare that brain death or cardiac death has occurred are arbitrary, open to serious world-wide debate, variable in definition and application, and, more seriously, do not necessarily provide moral certainty that real death has occurred and that such organ retrieval does not actually cause the death of the donor.
This problem has been debated over the years at the Pontifical Academy of Sciences and remains a subject of legitimate debate to this day. The declaration of brain death or cardiac death also does not appear to be consistent with the teaching of Pope Benedict XVI that the definition of death receive the consensus of the entire scientific community and does not give everyone certainty that the primary criterion is respect for the life of the donor and that the organs are removed from a dead body, a cadaver.
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