What should be done after an oxygen toxicity event in the chamber for the first occurrence?

After an oxygen toxicity event in a diving chamber, it is crucial to allow time for the body's recovery and to ensure safety before resuming normal activities. Waiting 15 minutes after the symptoms subside is the recommended course of action following the first incident. This waiting period allows for the residual effects of high oxygen exposure to diminish, reducing the risk of further toxicity or complications.

In situations involving oxygen toxicity, immediate resumption of breathing air or ascending to the surface may not be advisable as they do not provide the necessary time for the body to clear excess oxygen from the system. Continuing on oxygen without interruption can exacerbate the condition, increasing the risk of additional toxicity. Thus, allowing a recovery period of 15 minutes helps to ensure the diver's safety and health following the initial event.