Patent ID: 8897872

Claim:
A medical device, comprising: an energy storage module configured to store an electrical charge; and a processor configured to: receive ECG data of a patient receiving chest compressions; identify the occurrence of a chest compression group within the received ECG data, the identified chest compression group corresponding to a series of consecutive, substantially periodically repeating chest compressions being administered to the patient; determine, within the received ECG data, a first one of a beginning interval and an ending interval of the identified chest compression group, wherein the beginning interval corresponds to a first chest compression of the chest compression group and the ending interval corresponds to a final chest compression of the chest compression group; analyze a segment of the ECG data that includes both first ECG data occurring within the first one of a beginning interval and an ending interval of the identified chest compression group and second ECG data occurring outside the first one of a beginning interval and an ending interval of the identified chest compression group, the analysis discounting partially but not completely the first ECG data relative to the second ECG data; and determine whether stored electrical charge should be guided to the patient based on the analysis.