Underlying lung disease and exposure to terrestrial moderate and high altitude: personalised risk assessment

BMC Pulmonary Medicine

Table 1 Overview of estimated *Pb, PAO_2, PaO₂, PaCO₂, SpO₂ with increasing terrestrial altitude. Adapted from [4, 7, 8]

Altitude (m)	Examples	Pb (mmHg)	PAO₂ (mmHg)	PaO₂ (mmHg)	PaCO₂ (mmHg)	SpO₂ (%)
Sea level	–	760	149	90–100	38–42	97–99
1500	Verbier (CH)	630	122	65–80	33–42	93–97
2000	Saas-Fee (CH)	600	116	64–67	33–38	90–96
2500	Machu Pichu (PE)	560	108	45–70	31–36	88–95
3000	Lukla (NP)	525	100	49–54	31–35	84–92
3500	La Paz (BO)	490	93	42–53	32–34	80–89
8840	Everest summit (CN/NP)	253	43	27–32	10–14	54–62

CH Switzerland, PE Peru, BO Bolivia, NP Nepal, CN China, Pb barometric pressure, PAO₂ partial pressure of alveolar oxygen, PaO₂ partial pressure of arterial oxygen, PaCO₂ partial pressure of arterial carbon dioxide, SpO₂ arterial oxygen saturation

ISSN: 1471-2466