An implantable pacemaker continuously records pacing events and their respective rates of occurrence in sequence, as they occur, into an Event Record stored in a circular buffer. The circular buffer always contains the most recent events and rates collected. The recording of the pacing events selectively...http://www.google.com/patents/US5431691?utm_source=gb-gplus-sharePatent US5431691 - Method and system for recording and displaying a sequential series of pacing events
