In the context of DCS, what does denitrogenation refer to?

Denitrogenation refers specifically to the removal of nitrogen from the blood and tissues in the context of decompression sickness (DCS). During a rapid ascent in altitude, the reduction in atmospheric pressure causes dissolved nitrogen in the bloodstream and body tissues to form bubbles, leading to various symptoms associated with DCS.

To mitigate this, the process of denitrogenation is utilized, which involves minimizing the amount of residual nitrogen in the body before exposure to lower pressures. This can be achieved through controlled ascent rates and pre-dive protocols designed to allow the body to off-gas nitrogen safely, thus reducing the risk of bubble formation and the potential for DCS during ascent.