Abstract
In guidelines for CPR at ECC (Emergency Cardiovascular Care) 2000, early defibrillation was emphasized, and there were a lot of good data on AED. Whenever people recovered from VF by AED, the total resuscitation rate did not change or become worse. Therefore, there are several changes to the 2005 guidelines. The first major change is that the chest compression ventilation ratio is changed from 15 : 2 to 30 : 2. This change decreases the hands-off time. The second major change is that the respiration time is changed from 2 seconds to 1 second. This change also decreases the hands-off time. The third and final major change is that the series of 3 shocks for VF has been changed to a single shock. This change also decreases the hands-off time and is dependent on the papers that most cases of VF were converted to a normal sinus rhythm or asystole by the first shock during a series of 3 shocks.
