One of the reasons for the emergency use of a hyperbaric chamber concerns a diving-related accident. Decompression sickness is potentially serious; it requires urgent treatment and hyperbaric recompression. It is caused by the formation of nitrogen bubbles in the organism which appear during the diver’s ascent and throughout his or her decompression.

Chantre, Morin, Le Hot, Blatteau, Lefort, , , , (). [Hyperbaric medicine and emergency medicine, an example of decompression sickness in diving]. Revue de l’infirmiere, ;67(242):16-17. https://www.ncbi.nlm.nih.gov/pubmed/29907170