What should be done in the case of a second O2 toxicity hit?

In the event of a second oxygen toxicity hit, it is important to safely manage the situation to mitigate further risks. The best course of action involves removing the mask, which allows the individual to breathe normal air, thereby reducing the exposure to oxygen. After the symptoms subside, the procedure calls for a controlled decompression of 10 feet at a rate of 1 foot per minute.

This gradual decompression is crucial because it allows the body to safely adjust to the lower pressure and oxygen levels, preventing any additional stress that could exacerbate toxic effects. The slow ascent helps ensure that the individual’s body can adequately cope with changes in pressure without causing further harm.

Choosing to keep the mask on and increasing the oxygen supply could lead to a more severe manifestation of oxygen toxicity, while immediately exiting the chamber may not provide the necessary precautions to safely manage the situation, potentially leading to complications. The approach taken in this scenario emphasizes careful monitoring and a gradual return to normal conditions.