How long organs can be outside the body?
Source:
depending on the species, the organs can be out of the body from several hours to a day and a half
As we all know, modern medicine has long used method that saves countless human lives. Transplantation is one of the key and most difficult areas in modern medicine, which requires a very important factor — time. Due to the ultra-fast destruction of healthy tissues, professionals it is important to know what period of time can be those or other bodies outside the body, which subsequently can be transplanted to the needy person. And you know about them you?
Preparation of organs for transplantation
The Process of a body depends on professional skills of specialists and of the body. Currently, there are several types of transplant organs, which can be either from himself or of a genetically identical person, and from . During the preparation of the body for transplantation, a team of clinicians must correctly and prepare it for transportation, which can take a considerable amount of time and significantly affect the possibility of organ transplantation. According to an article published on the portal , modern technologies allow to save a viable organ from 4 to 36 hours depending on the body.
According to the United network for sharing organs (UNOS), the most frequently transplanted organs become kidney, then liver, heart and lungs. After removal , it is washed with a special “preservative” solution and placed in a cryo-Depositary immediately after harvest in order to prevent its defeat of microorganisms. It would seem that no microbes — no problems? If our food it works in the refrigerator, with the authorities much more complicated. At normal body temperature cells exchanging chemicals through their membranes, but in cold conditions cellular metabolism is substantially reduced until the complete cessation. For this reason, the cells to “swell” due to the excess of the accumulated liquid, which leads to serious damage of the body.
To maintain the viability of the organ using a special nutrient solution.
How is the transfer of organs?
After an organ transplant in a support solution, the extracted organ is placed in the refrigerator. Currently considered to be the most “perishable” body is the heart, which loses its viability for 4-6 hours in cold conditions. After this period of time the function of heart cells are broken, causing an increased risk of improper operation of the recipient.
If the heart is the weakest organ, kidneys, in this case, are more attuned to lack of blood flow. Taken the kidneys are able to remain viable for 24-36 hours in the conditions of the cryochamber, which is the longest storage time of organs outside the body compared to the rest . So, human lungs can “live” for 6-8 hours, and the liver is stored until approximately 12 hours, subject to providing the necessary storage conditions.
At this stage of development of medicine, scientists have developed new methods of preservation of organs and tissues that allow you to further extend their viability. One of these methods is perfusion, implying a connection extracted on to a special machine which pumps oxygen-rich and nutrient fluid through the tissue of the organ, by analogy with our whole heart.
Thanks to the input of nutrients into the body and excretion of waste products, perfusion significantly extends the life of the tissues of the body.
Despite the fact that currently much debate and research about the use of perfusion, this method gives great hope for a much greater increase in viability that are outside of the body.
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