What step follows the loss of oxygen during treatment if it can be repaired within 15 minutes?

When there is a loss of oxygen during treatment and it can be repaired within 15 minutes, the appropriate step is to maintain depth until the repair is complete. This approach prioritizes the safety and stability of the diver's condition. Ascending to the surface immediately could expose the diver to a rapid change in pressure, which may lead to complications such as decompression sickness. Administering emergency oxygen might seem like a viable option, but if the issue can be resolved quickly and safely at depth, maintaining the current pressure allows for a controlled environment while repairs are made. Transferring to a different chamber could unnecessarily complicate the situation and delay the required intervention. Therefore, maintaining depth is crucial for ensuring that the diver remains in a stable condition while addressing the issue with oxygen supply.