Twin Peak (KY2 + Dzo Jongo East) Expedition AMS Risk Calculator

A full rest day between summits is non-negotiable. Do not attempt Dzo Jongo East if SpO2 did not recover above 88% after KY2.

The primary risks on Twin Peak (KY2 + Dzo Jongo East) Expedition are: Cumulative AMS fatigue between summit days, Weather window closing between Day 9 and Day 12, Overconfidence after first summit. Your operator should brief you on each of these before departure.

Diamox (Acetazolamide) is worth discussing with your doctor if you plan to attempt Twin Peak (KY2 + Dzo Jongo East) Expedition (20,505ft). It is not routinely required for healthy trekkers but is recommended if you have had AMS symptoms on a previous high-altitude trip. Never start Diamox without medical advice — it has side effects including tingling fingers and increased urination.

At 6,250m, a resting SpO2 below 80% is a medical emergency and requires immediate descent. Between 80–85% — monitor closely and do not ascend further. Most acclimatized trekkers maintain 85–92% at this altitude. Carry a pulse oximeter and check readings morning and night.