What is the first step you should take at an accident scene involving injuries?

In an accident scene involving injuries, stopping heavy bleeding and keeping the injured warm is a crucial first step. This action addresses immediate life-threatening issues that might arise from blood loss. Heavy bleeding can quickly lead to shock or, in severe cases, fatality; thus, stabilizing the patient's condition is essential before any other actions are taken.

While administering first aid is also important, focusing initially on controlling bleeding is vital because it can prevent further deterioration of the injured person's situation. Keeping the injured warm is equally significant, as it helps to combat shock and maintain body temperature, especially if they are in an exposed or cold environment.

Calling emergency services is important as well, but it should generally be done simultaneously with, or immediately after, ensuring that heavy bleeding is controlled. Moving the injured without professional evaluation can exacerbate injuries, particularly spinal or head injuries, so it is not advisable. Prioritizing the management of critical life signs can save a life, making it the most important initial response in these situations.