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Survivre sans respirer

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Les nouvelles découvertes scientifiques se succèdent à un rythme effréné et elles ne cessent de m'estomaquer:

Thanks to science, you can now clear "breathing" off your schedule for as long as 15 minutes. A group of scientists have developed a new microparticle filled with oxygen that will one day potentially be used in emergency medicine to allow patients to breathe while their airways are obstructed.

The "lipidic oxygen−containing microparticles" (LOMs) are a single-layer shell of lipids enclosing a small amount of oxygen. The oxygen is suspended in a liquid mixture, meaning it's unable to form larger bubbles that could cause an embolism or other complications. And as the designation "microparticles" implies, they're just 2-4 micrometers wide, making them far smaller than the tiniest objects visible with the naked human eye.

How it works: When the microcapsules are injected into the bloodstream, they collide with red blood cells and near-instantaneously transfer about 70% of their contained oxygen into circulation. Rabbits with blocked windpipes were able to survive for about 15 minutes using injections of the substance. According to the authors of the original study, the technology could be used to keep trauma patients alive long enough to safely insert a breathing tube or to perform other life-saving therapies.

"This is a short-term oxygen substitute — a way to safely inject oxygen gas to support patients during a critical few minutes," said Boston Children's Hospital cardiologist John Kheir, who led the team that developed the technology in 2012. "Eventually, this could be stored in syringes on every code cart in a hospital, ambulance or transport helicopter to help stabilize patients who are having difficulty breathing."

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