A method and system provides for generating a snapshot representative of one beat of a patient's normal cardiac rhythm. Cardiac rate channel signals and shock channel signals are sensed. A fiducial point is determined for a predefined number of the cardiac rate channel signals. A predefined number of...http://www.google.ca/patents/US6708058?utm_source=gb-gplus-sharePatent US6708058 - Normal cardiac rhythm template generation system and method
