There’s a bit more to it than gas
FACTORS THAT INFLUENCE GETTING ‘NARCED’ Every beginner’s dive class introduces its students to the topic of nitrogen narcosis: the anesthetic effect of certain gases particularly nitrogen, when breathing compressed air or other gas mixtures under high pressure. It’s an important piece of info. In many ways, critical knowledge for any level of diving. However, for the most part, initial discussion, even in some advanced recreational courses, is pretty basic stuff. It’s just enough to scratch the surface of what is a complex and nuanced topic. And the proof of just how basic is right there in the name. What tends to be overlooked, is that although nitrogen partial pressure is the trigger, there are a bunch of factors other than it playing an important role in magnifying the effects of being ‘narced.’ The confusion begins when we try to define where it starts: that is, what depth represents the