The document discusses the American Heart Association's process for updating its Guidelines for Cardiopulmonary Resuscitation (CPR) and Emergency Cardiovascular Care (ECC) based on the latest resuscitation science. It describes how an international committee called ILCOR systematically reviews over 300 resuscitation topics to reach a consensus on the science. This consensus will then be used to update the AHA's 2010 Guidelines for CPR and ECC later in the year. The new guidelines are aimed at helping healthcare providers and lay rescuers save more lives through improved resuscitation practices and training.