The American Heart Association changed its guidelines for CPR chest presses in 2005. It said people should increase the number of chest presses from 15 to 30 for every two breaths given.

• 2005年美国心脏协会修改了针对CPR胸部按压的指导方法。说是施救者应该每两次呼吸就把胸部按压的数量从15次增加到30次。