Decompression sickness practices in lobster diving among the indigenous Miskito people, who face great economic pressures. At that time it was estimated that in the country over 2000 divers had been injured and 300 others had died since the 1970s. In the United States, it is common for medical insurance not to cover treatment for the bends that is the result of recreational diving. This is because scuba diving is considered an elective and "high-risk" activity and treatment for decompression sickness is expensive. A typical stay in a recompression chamber will easily cost several thousand dollars, even before emergency transportation is included.
Oxygen window in diving decompression at a shallower stop at the same risk, or at the same rate at the same depth at a lower risk, or at an intermediate rate at an intermediate depth at an intermediate risk. Use of 100% oxygen is limited by oxygen toxicity at deeper depths. Convulsions are more likely when the pO exceeds . Technical divers use gas mixes with high ppO in some sectors of the decompression schedule. As an example, a popular decompression gas is 50% nitrox on decompression stops starting at . Where to add the high ppO gas in the schedule depends on what limits