A mechanical device for providing external chest compression for cardiac resuscitation, comprising, a first support member positionable horizontally and a second support member positionable vertically, where the first and second support members are rotationally connected together with a swivel attachment that permits the first support member to rotate in an arc with respect to the second support member in at least one of a vertical and horizontal plane for positioning the first support member over a horizontally positioned victim or to maneuver the first support member out of the operative field when not in use, wherein the swivel attachment allows the first support member to be operated in up and down singular strokes in a pumping motion.