What is the appropriate action for an unconscious pulseless diving victim?

In a situation involving an unconscious, pulseless diving victim, the appropriate action hinges on the urgency of interventions and the principles of hyperbaric medicine. Choosing to avoid immediate pressure and instead waiting for evacuation is often the best course of action in scenarios involving potential decompression sickness or arterial gas embolism.

Pressurizing immediately can complicate the victim's condition, especially if they have air trapped in their body or if there are other complications that arise from being rapidly put under pressure. Addressing the situation under controlled conditions—such as while arranging for evacuation or at a suitable hyperbaric facility—ensures that the victim receives the most effective care without exacerbating any possible injuries.

Starting CPR without hyperbaric intervention may seem feasible, but without further evaluation of the underwater environment and the potential for decompression problems, this could lead to suboptimal outcomes.

Administering oxygen is pivotal in treating certain dive-related issues, such as decompression sickness, but it should also be performed in conjunction with the correct environment and not as a standalone emergency first response, especially before ensuring the victim is stabilized or evacuated appropriately.

Thus, choosing to abstain from immediate pressurization—unless evacuation is not feasible—reflects a cautious and well-informed approach