2024 Author: Adelina Croftoon | [email protected]. Last modified: 2023-12-17 02:07
This week, doctors are finishing the final preparations for procedures for the introduction of a person into artificial suspended animation. People will be put in a state between life and death so that doctors have more time to perform operations for fatal wounds.
Presbyterian Hospital in Pittsburgh, Pennsylvania, will place 10 eligible patients admitted to it, including a fatal gunshot wound, into artificial suspended animation. Such patients come to them about once a month, so the first experiment may take place as early as April.
The surgeon Samuel Tisherman, who is conducting the experiment, said in an interview with New Scientist magazine: “We are suspending life processes, but we do not want to call it artificial suspended animation because it sounds like an expression from a science fiction movie … We call it emergency conservation and restoration vital functions.
This process is carried out as follows:
1. Saline solution is injected into the brain and heart. It will circulate through the arteries throughout the body, replacing blood.
2. Within 15 minutes, the patient's body is cooled to a temperature of 10 °.
3. The patient will not have blood, will not breathe, but his or her cells will continue to live for several hours.
4. Doctors will have more time to work, then new blood will be transfused into the body. In an experiment on a pig in 2002, the animal's heart began to work on its own, and the blood circulation warmed up the body. If the heart does not start beating, the patient will undergo resuscitation.
People won't be frozen for years, as sci-fi movies show. At least for now.
Surgeon Peter Rea of the University of Arizona at Tucson was involved in the creation of this technology. He told the New Scientist: “After these experiments, the definition of the word 'dead' has changed … Every day at work, I report the death of people. They have no signs of life, no heartbeat, their brains have stopped working. I sign the paper knowing in my heart that they are not really completely dead. I could freeze them. But I have to wrap them in a bag, although I know there is a solution."
At the 2010 Ted Science Conference, Mark Roth, a cell biologist at the Fred Hutchinson Cancer Research Center, spoke about his work on artificial suspended animation and the future. It uses small doses of hydrogen sulfide. Hydrogen sulfide is found in the body where oxygen normally accumulates, thus reducing oxygen demand. He successfully tested this method of introducing into hibernation in mice.
The biologist emphasized the role of suspended animation in nature. Plant seeds and bacterial spores can remain dormant for 250 years without losing their function. The ovum in a woman's ovaries has been dormant for about 50 years. Pet stores sell packets of sea monkeys. Put them in water and after a week they will start swimming.
Roth also cited examples when people accidentally fell into a state of suspended animation: a skier fell under an ice waterfall, she had no heartbeat, she could be considered dead. However, she was revived, and she was healthy. In Canada, a 13-month-old girl found herself on the street in the winter in the same diaper. She was found clinically dead but survived.
In many cases, people can be revived within hours of cardiac arrest without serious neurological damage, Roth said.
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