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Cooling stroke patients from the inside out

Device placed in vein chills the blood

SAN ANTONIO — Cool runnings, indeed. A tiny device placed inside a central vein can safely refrigerate blood as it flows through stroke patients, lowering their temperature and raising the possibility that they might gain brain protection from hypothermia without having to be packed in ice.

Although the trial didn’t find that stroke patients getting their blood cooled fared any better or worse than a comparison group of patients who weren’t cooled, the technology proved safe enough to clear the way for testing the device in a much larger group, said Thomas Hemmen, a neurologist at the University of California, San Diego Medical Center who presented the data February 25 at the International Stroke Conference.

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