Final answer:
The correct sequence for basic life support is CAB-compressions, airway, breathing. CPR is critical for maintaining blood flow to the brain after the heart stops, and should be done at 100 compressions per minute, following proper technique to avoid injury.
Step-by-step explanation:
The correct sequence for basic life support, as recommended by current standards, is CAB-compressions, airway, breathing. This method prioritizes starting with chest compressions. Cardiopulmonary resuscitation (CPR) is essential when the heart stops, and chest compressions help maintain blood flow, particularly to the brain, to prevent irreversible damage and death of neurons.
This sequence of actions is intended to sustain life until the heart can spontaneously recover or until professional healthcare decisions are made. It is crucial that CPR is performed correctly to avoid potentially fatal injuries, such as driving the xiphoid process into the liver or causing broken ribs. Accordingly, CPR training through certified courses is highly advised for both medical personnel and the general public.