Killar to Zanskar via Chari Jote Expedition AMS Risk Calculator

Blood oxygen below 75% at camp altitude requires immediate descent. Do not push through severe AMS at any point. This is life-threatening terrain.

The primary risks on Killar to Zanskar via Chari Jote Expedition are: Fatal AMS above 16,000 ft, Crevasse fall on Day 5-6, Catastrophic weather on Himalayan divide (unexpected blizzard), Absolute isolation — minimum 7-day manual evacuation from any point on the route. Your operator should brief you on each of these before departure.

Diamox (Acetazolamide) is worth discussing with your doctor if you plan to attempt Killar to Zanskar via Chari Jote Expedition (17,200ft). 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 5,243m, 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.

Do not attempt. This must be a minimum 4-person team with at least 1 person with Himalayan mountaineering certification and a professional Pangi valley guide.