Gamow bag

The Gamow bag is an inflatable chamber used in an attempted emergency treatment for Ngawang Topche Sherpa at Camp II. By increasing the air pressure around a stricken climber, it can simulate descent to a lower altitude; in this case, however, the attempt to use it appeared ineffective, and the evidence does not establish that it changed the outcome.

Design and Intended Use

A Gamow bag can be inflated around a climber and filled with air. The increased pressure raises the concentration of oxygen molecules available to the person inside, simulating the physiological effect of moving to a lower elevation. It is therefore a temporary intervention when immediate physical descent is difficult, not a substitute for getting a climber down the mountain.

Use in the Camp II Rescue

On April 22, Ngawang Topche Sherpa was found at Camp II disoriented and seriously ill. His symptoms led the expedition to diagnose high-altitude pulmonary edema. Because Camp II stood only about four hundred meters above Camp I, reaching an altitude where his symptoms might ease required taking him down into the Khumbu Icefall. The recommended lifesaving response to the condition included an immediate descent of roughly 610 to 1,220 meters.

Klev Schoening and Tim Madsen coordinated the response at Camp II, where they had gone to acclimatize. No Mountain Madness guides were there: Scott Fischer had descended, while Anatoli Boukreev and Neal Beidleman were resting at Base Camp. Consulted by radio, Boukreev advised getting Ngawang down as quickly as possible and giving him oxygen. Base Camp also advised administering drugs, but these seemed to have no effect, and the drugs did not enable Ngawang to descend on foot.

Limits and Significance

The team then attempted to place Ngawang in the Gamow bag. The available account says the procedure seemed to have no effect; it does not describe a successful recovery or establish that the bag itself caused any later outcome. The episode shows the chamber’s role as an emergency measure within a larger rescue problem: its simulated descent could not remove the need to transport Ngawang to a substantially lower altitude.

The bag’s appearance in the account also makes the limits of equipment visible. A specialized device and medical advice were available, but neither resolved the central logistical demand of the emergency: getting a severely ill climber down from the mountain.