What is oxygen therapy and why is it used in treating diving accidents?

Oxygen for diving. Hyperbaric oxygen is used to "displace" nitrogen that accumulates in the blood during dives where you breath compressed air. Nitrogen is less readily dissolved in your blood, and can "bubble up" (open a bottle of soda or beer, and the co2 bubbles up- "carbonation"). Nitrogen bubbles in the blood cause "the bends" (e.g. Pe painful joint involvement, or serious brain involvement causing a stroke).
Hyperbaric O2 tx. Hyperbaric oxygen therapy can be used to treat dive-related medical problems. In the case of air or gas embolism to the brain, it can reduce the size of the gas bubble as well as improving the blood’s ability to carry oxygen to tissues that need it. Once the bubble becomes small enough, it can be absorbed by the body. It is a mainstay for the treatment of decompression sickness. In this situation.
Hyperbaric Oxygen. Hyperbaric oxygen therapy is the primary treatment for decompression sickness and arterial gas embolism. It is unclear whether the efficacy of hbo is due primarily to decreased bubble size and relief of local hypoxia, or to modulation of the pathologic effects mediated by bubbles in tissue and in vessels.