Stereotaxis, Inc. announced that cardiac ablation procedures were performed with the NAVISTAR RMT THERMOCOOL catheter by clinicians at two centers in the United States since the announcement of its approval by the US Food and Drug Administration on February. A 65-year old male with persistent left-sided abnormal heart rhythm was treated successfully in the first procedure with the magnetic irrigated catheter by Dr. Andrea Natale, Executive Medical Director of the Texas Cardiac Arrhythmia Institute at St. David's Medical Center in Austin, Texas. In a separate case, a 72-year old male patient with atrial flutter was treated by Dr. David Tschopp, electrophysiologist at The Heart Hospital of Austin. Before FDA approval, Dr. Peter Weiss, MD MSc at Intermountain Medical Center in Salt Lake City received a compassionate use exemption to treat a patient with incessant premature ventricular contractions (PVCs) that accounted for over 30% of his heart beats each day. The patient's PVCs were reduced to less than 5% of his total heart beats after treatment with the magnetic irrigated catheter. At catheter ablation the patient had two previous attempts and failed medications.