A method of cardioverting the atrium of a human heart, comprising insertion of first and second elongated electrodes tranvenously into the heart and associated vessels. One electrode is preferably located in the coronary sinus and great vein of the heart. The other electrode is preferably located in...http://www.google.com/patents/US5165403?utm_source=gb-gplus-sharePatent US5165403 - Difibrillation lead system and method of use