DR ABC is an acronym used in first aid to guide responders through a primary survey of a casualty in an emergency. It stands for:

• D – Danger: Check the scene for any immediate danger to yourself, the casualty, or others. Do not approach if it is unsafe.
• R – Response: Assess if the casualty is conscious and responsive by speaking to them or gently shaking them.
• A – Airway: Open the casualty's airway by tilting the head back and lifting the chin to prevent blockage.
• B – Breathing: Look, listen, and feel for normal breathing for up to 10 seconds.
• C – Circulation: Check for signs of significant bleeding or circulation problems and manage accordingly.

There are related acronyms such as ABCD and DRSABCD that add steps like "Send for help" and "Defibrillation." While DR ABC is commonly used for basic first aid, ABCD includes defibrillation (using a defibrillator) and is often used in advanced or medical settings. The focus of these protocols is on ensuring safety first, checking responsiveness, and then maintaining airway, breathing, and circulation to save lives in emergencies. Knowing these steps helps responders stay calm and act effectively when someone is in urgent need of help.