Table 1.

Comparisons of Tibetans, Andeans, and Ethiopians in responses to high altitude

TibetansAndeansEthiopians
Basal metabolic rateNormalNormalUnknown
Maximum oxygen consumptionNormalNormalUnknown
Ventilation (L/min)1510.5Unknown
Hypoxia ventilatory responseHigherLowerUnknown
Oxygen saturation of hemoglobinLowerHigherHighest
HemoglobinLowerHigherLower
Arterial oxygen contentLowerHigherHighest
Pulmonary artery pressureLowerHigherLower
Pulmonary nitric oxide productionHigherLowerHigher
Peripheral capillary densityHigherLowerUnknown
Oxygen dissociationNormalNormalNormal
CMS (prevalence)1.2%8 to 15%No reports
  • Adapted from refs. 15, 17, and 69.