Patent ID: 8634937

Claim:
A method for providing Cardiopulmonary Resuscitation (CPR) treatment to a person in need of emergency assistance, the method comprising: obtaining, by a computing unit, from an accelerometer positioned to move in coordination with a person's breastbone values for depths of a plurality of the chest compressions; obtaining, by a computing unit, from a light sensor affixed to the patient information about light detection; determining, based on the information from the light sensor, whether a rescuer is releasing the chest of a person during manual CPR chest compressions, wherein determining whether the rescuer is releasing the chest of the person during manual CPR chest compressions includes: determining a frequency at which light is detected by the light sensor; comparing the determined frequency with a compression rate obtained from the accelerometer; and determining that the rescuer is not releasing the chest of the person if the determined frequency at which light is detected by the light sensor is less than the compression rate obtained from the accelerometer; and providing feedback to a rescuer about chest compressions performed by the rescuer based at least in part on the values for the depths of the plurality of the chest compressions and the determination of whether the rescuer is releasing the chest of the person.