ST. PAUL, Minn.--(BUSINESS WIRE)--St. Jude Medical, Inc. (NYSE:STJ) today announced that it is the leading sponsor of the Catheter Ablation Versus Anti-arrhythmic Drug Therapy for Atrial Fibrillation (CABANA) Trial. The pivotal trial, announced today by Mayo Clinic, is intended to determine the effectiveness of catheter ablation (using long, narrow tubes to non-invasively reach and destroy abnormal heart tissue) in eliminating atrial fibrillation (AF), a condition in which the upper chambers of the heart beat quickly and erratically.