What is the primary consideration for the immediate care of an injured diver at the scene of a diving accident?

The primary consideration for the immediate care of an injured diver at the scene of a diving accident is administering oxygen at the highest possible concentration. This is crucial because many diving injuries, particularly those related to decompression sickness (DCS) or arterial gas embolism (AGE), benefit significantly from the provision of high-concentration oxygen. Oxygen helps to reduce the volume of nitrogen bubbles in the bloodstream and tissues, facilitates faster off-gassing of inert gases, and improves cellular oxygenation, which is essential for recovery.

The immediate administration of high-concentration oxygen can be a life-saving intervention, maximizing the diver's chances of recovery before they can be transported for further treatment in a hyperbaric chamber. Quick access to oxygen therapy is vital in mitigating the potential severity of diving-related complications.

While maintaining body heat and hydration, transportation to a chamber, and assessing dive depth are also important aspects of managing a dive accident, they are secondary to the immediate need for high-concentration oxygen in the initial care of the diver.