What is the primary aim of first aid measures for someone who has drowned?

The primary aim of first aid measures for someone who has drowned is to restore breathing and circulation. In drowning situations, the individual experiences asphyxia and potential cardiac arrest due to a lack of oxygen. Therefore, the immediate priority is to revive the person by re-establishing their ability to breathe and ensuring effective circulation.

Administering rescue breaths can help provide the oxygen needed for the body to function, while chest compressions may be necessary if the heart has stopped beating. This response is critical because without prompt action to restore these vital functions, the individual may suffer from irreversible brain damage or death.

Other options like preventing dehydration, reducing swelling, or warming the body, although they may be relevant in different medical emergencies, do not address the immediate life-threatening issues caused by drowning. The focus must be on ensuring that the person can breathe and their heart is functioning correctly as a priority in these scenarios.