At a serious motorcycle accident, what should you prioritize with an unconscious casualty?

In the event of a serious motorcycle accident where the casualty is unconscious, the priority is to check their breathing. This step is crucial because ensuring that the person is breathing is fundamental to their survival. An unconscious individual may have compromised airway management, which can lead to suffocation if not promptly addressed. Assessing their breathing allows you to determine if they are in need of immediate life-saving measures, such as resuscitation or the need to position them to maintain an open airway.

Other actions, such as taking their temperature, giving them something to drink, or applying a bandage, are not appropriate under these circumstances. Taking their temperature does not address any immediate life-threatening conditions that might arise from their unconscious state, providing liquids could lead to choking and applying a bandage does not address the primary concern of whether the individual can breathe adequately. Therefore, checking their breathing takes precedence as it directly impacts their chance of survival.