In the ABC rescue procedure, what does the B stand for?

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Breathing is the step that focuses on whether the casualty is effectively ventilating. After you’ve opened the airway, you assess if the person is breathing on their own. If there are no breaths or they’re not breathing adequately, you provide rescue breaths to ventilate the lungs and deliver oxygen to the body. Observe chest rise, listen for breath sounds, and feel for air flow. Each rescue breath should be controlled and aimed to make the chest rise, typically about one breath per second for adults. If the person isn’t breathing, continue delivering breaths as you monitor for signs of improvement or until professional help arrives. Once breathing is established or being supported, you proceed to the next step focused on circulating blood through the heart and body, such as starting chest compressions if there’s no pulse. Bleeding isn’t part of this sequence, even though controlling severe bleeding remains important in trauma situations.