Which condition is caused by nitrogen at depth?

Nitrogen narcosis is a condition caused by the effects of nitrogen at depth, particularly when divers go below approximately 30 meters (100 feet). As divers descend, the partial pressure of nitrogen in the breathing gas increases, leading to a narcotic effect on the central nervous system. This can impair judgment, coordination, and cognitive function, similar to alcohol intoxication, which is why it’s sometimes referred to as "rapture of the deep."

Factors such as individual susceptibility, depth, and duration of exposure can influence the severity of this condition. Understanding nitrogen narcosis is crucial for divers, as it can significantly impact their ability to make safe decisions underwater, potentially leading to dangerous situations.

Barotrauma, dyspnea, and hypothermia do relate to diving but are caused by different factors. Barotrauma is associated with pressure changes affecting air-filled spaces, dyspnea involves difficulty in breathing often linked to physical stress rather than nitrogen effects, and hypothermia is a result of prolonged exposure to cold water, which does not involve nitrogen at depth.