I have 8 people who have walked out of hospital after a cardiac arrest without a neurological deficit , this is in 20 years as a paramedic !Every one arrested in front of me, I do not consider any return of pulse and sometimes breathing a sucessful result if they do not walk out . This is why I have an advanced directive (living will !)This states that I am only to be kept alive long enough to harvest organs ,otherwise ONLY pain relief and nothing else ! Please ,some one tell me CPR works because I HAVE A MORBID FEAR OF WAKING UP BRAIN DAMAGED .