LONDON (Reuters) - A group of British docs conducting experiments in the "Death Zone" of Mount Everest has recorded the lowest levels of blood oxygen in humans, far beneath those of critically unwell patients. The findings printed on Wednesday could someday lead to raised care for patients with coronary heart and lung ailments in intensive care units, premature infants and others affected by related low-oxygen levels, known as hypoxia. Mike Grocott, a researcher at University College London, who led the study, stated in a telephone interview. The study happened within the so-referred to as "Death Zone" on Everest -- the realm above 8,000 meters (26,250 feet) where thin air limits the quantity of oxygen stepping into the lungs and can lead to organ failure and coma even for the fittest individuals. The staff of eight docs reached the 8,850-meter summit through the South Col route but carried out their experiment about 400 meters lower because of extreme weather at the top. After discovering an area that provided some shelter, four of the staff members removed their gloves, unzipped their down suits and had blood drawn from the femoral artery in the groin. Grocott mentioned. The surface temperature at the time was about minus 25 C (-13 F). An analysis showed what medical doctors had long suspected -- that high-altitude climbers have extremely low ranges of oxygen of their blood, usually seen solely in patients close to loss of life. The readings have been also the bottom-ever recorded in humans, as low as 2.55 kilopascals. This compares to a traditional level of 12-14 kilopascals for wholesome individuals and a degree of eight kilopascals for critically ill patients, Grocott added.
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