What do the letters ABC in first aid stand for?

In first aid, the letters ABC stand for Airway, Breathing, and Circulation, which are critical components to assess when providing emergency care.

Airway refers to ensuring that the individual’s airway is clear and free from obstructions, which is vital for breathing. If the airway is blocked, the person cannot inhale oxygen, making this the first priority in an emergency situation.

Breathing follows, as it is essential to check if the person is breathing adequately or at all. If they are not breathing, it is necessary to begin rescue breaths or other interventions quickly.

Circulation pertains to the heart's pumping ability and overall blood flow. Assessing circulation includes checking for a pulse and identifying any signs of severe bleeding. Effective circulation is crucial for oxygen delivery to tissues and organs.

This ABC sequence serves as a systematic approach for first responders and bystanders to prioritize life-saving measures efficiently during emergencies. The other combinations presented do not accurately reflect the established protocol for first aid, as they either mix up the order of critical priorities or replace key terms that are essential to the procedure.