In order to be able to save the lives of sudden cardiac arrest patients, effective and uninterrupted chest compressions are required. Performing manual chest compressions of high quality is difficult and depends a lot upon the person performing the CPR. The quality of CPR varies time to time and with each compression. The important determinant of return of spontaneous circulation (ROSC) and survival with good a neurological outcome is a proper depth and rate of chest compressions during CPR. This creates adequate blood flow and oxygen delivery to the heart and brain. Nihon Kohden’s new CPR assist supports performing and maintaining high quality CPR. It is also a training tool for ALS and BLS teams with a mannequin to improve and maintain CPR skills.