Which action is included among the four main actions in first aid for diving accidents?

Which action is included among the four main actions in first aid for diving accidents?

• A. Apply a tourniquet
• B. Perform only observation
• C. Deliver 100% oxygen
• D. Ascend immediately

Answer: (C)

Providing high-concentration oxygen right away is a primary first aid action for diving injuries. Giving 100% oxygen helps reduce the size of nitrogen bubbles in decompression sickness and arterial gas embolism and improves overall oxygen delivery to tissues while you arrange medical care. It buys time and supports the diver’s breathing as you seek advanced treatment, such as hyperbaric therapy. In diving emergencies, the four main steps typically include giving oxygen, summoning professional help, monitoring and supporting vital functions, and arranging rapid transport to a hyperbaric facility. The other options don’t fit: a tourniquet isn’t a standard measure for diving injuries unless there’s severe external bleeding; doing only observation leaves the diver untreated; ascending immediately can worsen conditions like decompression sickness and delays definitive care.

Providing high-concentration oxygen right away is a primary first aid action for diving injuries. Giving 100% oxygen helps reduce the size of nitrogen bubbles in decompression sickness and arterial gas embolism and improves overall oxygen delivery to tissues while you arrange medical care. It buys time and supports the diver’s breathing as you seek advanced treatment, such as hyperbaric therapy. In diving emergencies, the four main steps typically include giving oxygen, summoning professional help, monitoring and supporting vital functions, and arranging rapid transport to a hyperbaric facility. The other options don’t fit: a tourniquet isn’t a standard measure for diving injuries unless there’s severe external bleeding; doing only observation leaves the diver untreated; ascending immediately can worsen conditions like decompression sickness and delays definitive care.