How do you preserve organs?

Answer 1

The preservation of a human body relies on the taphonomic processes which it endures once it enters the archaeological record. To cut a very long story short, a lack of moisture (such as being buried in the sand which would soak it up) inhibits the ability of bacteria to decay which would put an end to processes such as putrefaction, etc. A body can be freeze dried such as Otzi the Iceman (but not simply frozen, as once the particles expand upon freezing it would destroy the body) or placed in a peat bog with a PH of 3.2 - 4.2 (sphagnum peat bogs only)

I am assuming this is through natural methods! But artificial ones would work on the same principle.

Answer 2

(Before they are harvested): Donor should have adequte oxygen supply until organs have been harvested, otherwise organs will degrade within the body. Donors who stop breathing and are not attached to a ventilator quickly can still donate their kidneys, so long as the kidneys are flushed through with a special solution within minutes of oxygen deprivation occurring (before consent for taking their kidneys has been obtained from a family member/partner).

(Once the organs are harvested) They are injected with a solution of cryoprecipitate and washed in some other solutions. Then they are kept on ice, in an insulated cool bag (like the type you can get from the supermarket) until that can be used (which should be as quickly as possible).