What is the main reason for divers to avoid deep nitrogen exposure when using Nitrox?

Diving with Nitrox, which is a mixture of different percentages of oxygen and nitrogen, provides advantages such as reduced nitrogen absorption, but there are still risks to be aware of, especially regarding deep nitrogen exposure. The main reason for divers to avoid deep nitrogen exposure when using Nitrox is the increased risk of nitrogen narcosis.

When diving at greater depths, the pressure surrounding the diver increases, leading to a greater partial pressure of nitrogen. This heightened partial pressure can impair cognitive functions and motor skills, creating a sensation similar to intoxication. Nitrogen narcosis can cause divers to misjudge their conditions, make poor decisions, or become disoriented, thereby compromising their safety.

By recognizing that nitrogen narcosis is a significant risk at increased depths, divers can take necessary precautions, such as monitoring their depth and making appropriate gas management choices. Understanding this principle helps divers enhance their safety and effectiveness while using Nitrox mixtures on deeper dives.