Sudden cardiac arrest is one of the leading causes of death, yet emergency procedures have not proven to be as effective as the medical community would hope them to be. In this conference, Brian J. O'Neil examines current treatment procedures for cardiac arrest and how the use of hypothermia with these patients can help reduce mortality rates and neurological damage. In this talk, O'Neil examines cardiopulmonary resuscitation (CPR) in detail, presents the conclusions of several recent studies, and discusses clinical cases. He also looks at the predictors for CPR survival and explains what goes on in the brain during CPR.