CPR quality assessment accounting for pause aspect

A system for Cardiopulmonary Resuscitation (CPR) feedback, comprising:

• a sensor configured to detect sets of CPR chest compressions received by a patient, the sets separated by pauses;
• a base device operatively coupled with the sensor and configured to generate patient data from the detected sets;
• a user interface coupled to the base device;
• and
• a processor configured to:
• receive the patient data,
• receive a classification criterion from the user interface, the classification criterion being related to the pauses in the sets of CPR chest compressions,
• identify at least some of the pauses from the patient data,
• classify at least some of the identified pauses in one of at least two pause groups based on the classification criterion,
• determine a penalty value for each pause group based on a corresponding classification, wherein at least one penalty value varies non-linearly with pause duration, and
• derive respective indicative values for each of the pause groups based on the corresponding penalty values, and
• in which the user interface is configured to output the indicative values and a prompt to alter an administration of CPR chest compressions received by the patient, the prompt based at least in part on the indicative values.