A system for recording trigger events and noise in conjunction with the recording of physiological signals is provided for use in an implantable medical device. In one embodiment, recorded trigger and noise data is provided for display to a physician along with reconstructed ECG data to facilitate interpretation...http://www.google.es/patents/US6347245?utm_source=gb-gplus-sharePatente US6347245 - Medical device ECG marker for use in compressed data system
Medical device ECG marker for use in compressed data system