Which priority action supports a casualty who may be in shock?

Providing reassurance and maintaining a calm environment is crucial for a casualty who may be in shock. Shock can cause significant anxiety and panic, which can exacerbate the condition and lead to further complications. By reassuring the individual and ensuring they feel safe, you can help to stabilize their mental state, which is an important aspect of overall care.

Additionally, keeping calm helps to prevent the casualty from experiencing an increase in stress or discomfort. It is important to remind them that assistance is on the way and that they are not alone. The atmosphere of reassurance can influence their physical response, as stress can negatively affect vital signs and worsen the symptoms of shock.

Other options, such as providing food or drink, leaving the person unattended, or conducting a physical examination, may not be appropriate actions to take in the event of shock. For instance, giving food or drink can be hazardous, as it may lead to choking or complications if the individual requires medical intervention. Leaving someone unattended can increase the risk of deterioration, and a physical examination might be too strenuous or could worsen their condition if they are not properly stabilized first. Thus, focusing on reassurance is the priority action that best supports someone potentially suffering from shock.