An apparatus (1) for assisting cardiopulmonary resuscitation by applying compression to the chest of a patient to stimulate blood circulation. The apparatus (1) comprises a pressurized gas container (70), preferably storing a gas in liquid form, a turbine (90), an electrical power generator (91) and a defibrillator (80). The turbine is actuated by the pressurized gas and adapted for powering the electric power generator (91), and the electric power generator (91) is adapted for energizing the defibrillator (80). The apparatus may further comprise a pneumatic compressor assembly (10) operably connected to the pressurized gas container (70).
