Disclosed is a (PR apparatus comprising a chest compression unit and a mounting device for mounting the chest compression unit on a patient The chest compression unit comprises a housing, plunger disposed in the housing, a compression member at one end of the plunger and extending from the housing. The apparatus includes a linear induction motor comprising a stator affixed to the housing and a rotor capable of linear motion and surrounding the stator, a connection front the rotor to the plunger for driving the plunger in a reciprocating manner. The apparatus also includes an induction motor control unit including a microprocessor, a monitor operable for monitoring the position of the plunger in respect of the housing, the position monitored by the motor being communicated to the induction motor control unit. Also disclosed is a method of CPR.
