What treatment method should be used when there’s a loss of O2 for greater than 15 minutes but less than 2 hours?

The recommended treatment method when there’s been a loss of oxygen for a duration of greater than 15 minutes but less than 2 hours is to resume at the point of interruption with maximum oxygen extensions. This approach is effective because it allows the diver to regain proper oxygen levels and support recovery without unnecessarily abandoning the treatment started prior to the incident.

Resuming at the point of interruption utilizes the established protocols for managing oxygen levels, which is critical in preventing hypoxic conditions that can lead to severe complications. By using maximum oxygen extensions, the treatment helps to ensure that the diver receives sufficient oxygen quickly, facilitating a safer recovery process.

While considering other options, aborting the treatment and surfacing might not provide the necessary support to counter the effects of oxygen deprivation experienced during the incident. Similarly, performing a rapid ascent can provoke additional risks such as decompression sickness, which is particularly dangerous following a loss of oxygen. Continuing without changes to the treatment protocol neglects the specific challenges presented by the incident and does not address the need for additional oxygen support.

By resuming the treatment at the point of interruption with maximum oxygen extensions, divers can effectively mitigate risks and promote recovery in a structured manner.