A method an apparatus for treating fibrillation, particularly atrial fibrillation. In response to detection of fibrillation, a high frequency, low energy pulse burst is delivered via pacing electrodes, accompanied by a high energy pulse delivered via defibrillation electrodes. The low energy...http://www.google.es/patents/US5713924?utm_source=gb-gplus-sharePatente US5713924 - Defibrillation threshold reduction system
