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LONDON, Jan. 7,2009:
Many researchers go to extreme lengths for science, but British investigators went to extreme heights—the summit of Mount Everest.
A group of doctors climbed the world’s highest mountain in 2007 to study physiological effects of the altitude, according to Michael Grocott, M.B.B.S., of University College London, and colleagues.
One outcome of the Caudwell Xtreme Everest expedition was confirmation from the field that blood oxygen drops to dramatically low levels at such heights—about a quarter of what they are at sea level, the researchers reported in the Jan. 8 issue of the New England Journal of Medicine.
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