A process traditionally used to treat cardiac arrest or traumatic brain injury is now showing promise as a possible method to enable long-term space travel through hibernation. Behind this effort is John A. Bradford, president of Spaceworks, and making this a reality is much closer than you might think.
Doctors refer to this strategy as something called “therapeutic hypothermia.” Essentially, the body is cooled slowly to a temperature between 32 and 34 degrees Celsius (normal body temperature is 37C). This will slow down both heart rate and blood pressure, giving doctors additional time to work on serious health issues.
The patient stays in stasis for about 2-4 days, although the technique has worked for as long as two weeks without any measurable harm. There’s evidence that even longer periods of stasis may be possible: a Japanese man once survived 24 days in a hypothermic state after a fall off a mountain ledge in Japan.
Bradford hopes through additional work to extend the safe period for stasis out to months, and says this technology and the equipment necessary can be automated easily and made space-ready.
Now, don’t assume that these stasis chambers will be like those you see in science fiction movies. While single person pods do work well, having enough of these would add a lot of additional weight to a spacecraft. Instead, Spaceworks is working on an open chamber capable of holding multiple crew members.
“There would be some robotic arms and monitoring systems taking care of [the passengers]. They’d have small transnasal tubes for the cooling and some warming systems as well, to bring them back from stasis,” Bradford told Quartz in an interview. Another key difference from sci-fi is how stasis would work.
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