AcetazolamideCarbonic Anhydrase InhibitorsMountaineeringCarbonic AnhydrasesAltitude SicknessBenzolamideAcclimatizationEthoxzolamideBicarbonatesCerebrovascular CirculationCarbon DioxideAnoxiaMethazolamideAlkalosisIofetamineTibetXenon RadioisotopesDichlorphenamideAtmospheric PressureTomography, Emission-Computed, Single-PhotonOxygenAcid-Base EquilibriumDiureticsHypokalemic Periodic ParalysisAtmosphere Exposure ChambersAthletic PerformanceRespirationTechnetium Tc 99m ExametazimeBlood VolumeHydrogen-Ion ConcentrationOxygen ConsumptionBoliviaAltitudeChlorothiazideCarbonic Anhydrase IIPulmonary VentilationOrganotechnetium CompoundsNorandrostanesAmphetaminesFurosemideIon-Selective ElectrodesBlood Gas AnalysisCerebral ArteriesHypercapnia