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5 articles on this topic
500m per night is the ascent limit above 3,000m — the 7 rules that cut AMS risk, covering hydration, Diamox timing, and SpO₂ checks, per WMS 2024.
88–92% SpO₂ is normal at 3,500m — what a falling reading means, which numbers should worry you, and why the device is an early warning, not a diagnosis.
125–250 mg twice daily is the standard Diamox dose — how acetazolamide works, WMS 2024 dosing, side effects like tingling, and who should avoid it.
500–1,000m of immediate descent is the single most effective treatment for both — symptoms, field triage, drug doses, and when to call for evacuation.
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.
