The 2010 AHA Guidelines for CPR and ECC once again emphasize the need for high-quality CPR, including
• A compression rate of at least 100/min (a change from “approximately” 100/min)
• A compression depth of at least 2 inches (5 cm) in adults and a compression depth of at least one third of the anteriorposterior diameter of the chest in infants and children(approximately 1.5 inches [4 cm] in infants and 2 inches[5 cm] in children). Note that the range of 1½ to 2 inches is no longer used for adults, and the absolute depth specified for children and infants is deeper than in previous versions of the AHA Guidelines for CPR and ECC
Allowing for complete chest recoil after each compression
• Minimizing interruptions in chest compressions
• Avoiding excessive ventilation
There has been no change in the recommendation for a compression-to-ventilation ratio of 30:2 for single rescuers of adults, children, and infants (excluding newly born infants). The 2010 AHA Guidelines for CPR and ECC continue to recommend
that rescue breaths be given in approximately 1 second. Once an advanced airway is in place, chest compressions can be continuous (at a rate of at least 100/min) and no longer cycled with ventilations. Rescue breaths can then be provided at about 1 breath every 6 to 8 seconds (about 8 to 10 breaths per minute). Excessive ventilation should be avoided.

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