Method and apparatus for monitoring manual chest compression efficiently during CPR

A cardiopulmonary resuscitation (CPR) compression measurement and feedback system, comprising:

• a compression sensor for measuring a magnitude and a direction of a CPR compression force, of a CPR compression, applied to a patient undergoing CPR and for providing, as compression data, the measured magnitude and the measured direction;
• and
• a monitor for receiving and processing the compression data, the monitor configured to:
• based on the compression data, calculate an extent of variation in the magnitude and an extent of variation in the direction of the applied CPR compression force from desired CPR compression characteristics, and
• based on the extent of the variation in the magnitude and the extent of the variation in the direction, generate graphical feedback, for a CPR provider, to indicate the measured magnitude and the measured direction of the applied CPR compression force and to indicate the extent of the variation in the magnitude and the extent of the variation in the direction of the applied CPR compression force from the desired CPR compression characteristics, the graphical feedback comprising an expandable shape that expands as the CPR compression is applied and that moves to provide feedback on the direction of the CPR compression force, the graphical feedback comprising the feedback.