72-year-old male had a TIA in 1995 and has been in chronic atrial fibrillation since 1992. In 2005 2 ablative procedures were ineffective. The main treatment strategy for his atrial fibrillation has consisted of rate control and oral anticoagulation. Despite several attempts of different medications (digoxin, beta-blockers) he has remained in atrial fibrillation with a relatively moderate to fast ventricular response.