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5 articles on this topic
5–10 points off is the typical error from cold hands or motion — the 3-step technique for a reliable SpO₂ reading, and how to read the number right.
At 8,848 m only 31% of sea-level oxygen is available. Discover the data on partial pressure, climbers' SpO₂ readings, and why the Death Zone is lethal.
300–500m per night is the acclimatization ceiling above 3,000m: the climb-high-sleep-low method, warning signs, and pre-acclimatization tactics that work.
1 in 4 climbers who ascend fast above 2,500m gets AMS — symptoms, the Lake Louise score, prevention rules, and descent thresholds, per WMS and UIAA.
At 4,000 m SpO₂ falls to 85–90%. At 5,000 m: 75–82%. Full chart every 500 m — from sea level to Everest — with AMS thresholds and descent criteria.
