IANTD Enriched Air (Nitrox) Practice Test

Maintaining awareness of nitrogen loading is crucial for divers using Nitrox in repetitive dive scenarios. Nitrox, which is a gas blend that typically contains a higher percentage of oxygen than air, influences nitrogen absorption and elimination. When divers utilize Nitrox, they are able to extend their no-decompression limits and manage nitrogen saturation more effectively than with air. Understanding and monitoring nitrogen loading helps divers avoid potential risks such as decompression sickness (DCS) caused by too much nitrogen in their tissues.

During repetitive diving, each dive can contribute to the cumulative nitrogen load in the body. Therefore, being acutely aware of this nitrogen loading allows divers to make informed decisions regarding their next dive profile, including depth and duration, ultimately enhancing safety and reducing the risk of complications. This awareness is a key factor in utilizing Nitrox effectively and responsibly.