The 2010 AHA Guidelines for CPR and ECC recommend a
change in the BLS sequence of steps from A-B-C (Airway,
Breathing, Chest compressions) to C-A-B (Chest compressions,
Airway, Breathing) for adults, children, and infants (excluding the
newly born; see Neonatal Resuscitation section). This fundamental
change in CPR sequence will require reeducation of everyone
who has ever learned CPR, but the consensus of the authors and
experts involved in the creation of the 2010 AHA Guidelines for
CPR and ECC is that the benefit will justify the effort.
SOURCE: heart.org