What could be a consequence of ascending too rapidly while using EANx?

Ascending too rapidly while using EANx (enriched air nitrox) can lead to an increased risk of decompression sickness (DCS). DCS occurs when a diver ascends too quickly, causing nitrogen that was absorbed by the body under pressure to form bubbles in the bloodstream and tissues as the pressure decreases. The use of EANx increases the percentage of oxygen in the breathing gas, which affects how nitrogen is absorbed and released in the body compared to standard air.

When applying the principles of dive physiology to enriched air nitrox, it is important to recognize that although EANx can allow for longer bottom times at certain depths due to reduced nitrogen levels, it does not eliminate the risk of DCS if proper ascent rates and safety stops are not adhered to. Thus, an improper ascent can still lead to decompression injuries regardless of the breathing gas composition.

In summary, the consequence of ascending too quickly while using EANx is primarily related to the body's response to pressure changes and the potential for nitrogen bubbles to form, leading to DCS.