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Effect of acetazolamide on blood gases and 2,3 DPG during ascent and acclimatization to high altitude.
  1. J. J. Milles,
  2. I. M. Chesner,
  3. S. Oldfield,
  4. A. R. Bradwell
  1. Good Hope Hospital, Sutton Coldfield, West Midlands, UK.

    Abstract

    Blood gases and red cell 2,3 DPG concentrations were measured during ascent and a stay for 6 days at 4846 m in 20 subjects. Acetazolamide improved Pa,O2 and reduced pH and Pa,CO2. 2,3 DPG concentrations were lower in the acetazolamide group during ascent and at high altitude. However, 2,3 DPG concentrations were significantly greater at high altitude in both the acetazolamide and placebo groups compared with low altitude. The acetazolamide group remained different from the placebo group during the stay at high altitude with higher Pa,O2, lower PaCO2, lower pH and lower 2,3 DPG concentrations.

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