Depending on the first aid or medical courses you might have taken you will have come across a number of different ways to do an assessment. The type of assessment you do may vary depending on the situation.
The introduction of the use of tourniquets as the first line treatment for arterial bleeding, introduced and tested by the military during the Gulf War, significantly changed the survivability of victims of trauma. The use of tourniquets and the “STOP THE BLEED” campaign has become main stream in the civilian world. Many places have STOP THE BLEED kits with AED kits in facilities and many public places.
This also required a re-evaluation of the way we do assessments. It used to be Airway – Breathing – Circulation (stopping bleeding) but now it is recognized that stopping massive hemorrhaging (bleeding) is the first priority, especially when a tourniquet can be applied in less than a minute, even by the victim if they are conscious.