If a diver is pulseless and an AED is not available, what is the appropriate action?

In scenarios involving a pulseless diver, it is crucial to take immediate life-saving actions. Recompression to 60 feet, followed by continued Basic Life Support (BLS) measures, is recommended because this approach addresses both potential decompression sickness and provides a controlled environment for administering resuscitation efforts. At that depth, maintaining the diver's condition may prevent further complications associated with their pulseless state.

During this process, BLS measures such as chest compressions and breaths can be effectively implemented, which are vital in restoring circulation and oxygenation. It also allows for monitoring while preparing the diver for evacuation once stabilized. This response aligns with the principles of emergency care, which prioritize effective resuscitation techniques while considering the unique underwater conditions.

The other options do not address the immediate medical needs of the diver or may put further risk to their health. Ensuring that the diver receives both oxygen and potential treatment for any decompression issues is essential, making the chosen action the most appropriate in that situation.