How does the ascent rate differ when using EANx versus air?

When using EANx, the ascent rate does not change significantly compared to air because the basic principles of buoyancy and pressure are the same in both cases. However, because EANx has a higher percentage of oxygen than regular air, divers may have more flexibility in their ascent schedules in certain situations. This increased flexibility can aid in managing nitrogen exposure and reducing the risk of decompression sickness, while still allowing divers to adhere to recommended ascent rates for safety.

The option regarding a slower ascent rate is misleading, as it is the nitrogen content that generally influences decompression strategies, rather than the oxygen content alone. The suggestion that ascent rates can be faster with EANx overlooks the need to follow established guidelines to mitigate risks. The notion of requiring a rapid ascent to avoid oxygen toxicity also misrepresents the reliance on proper ascent techniques; in reality, managing oxygen exposure and adhering to safe ascent practices are key considerations for both EANx and air dives.