New data presented at a major cardiology meeting Monday brought mostly good news on atrial fibrillation, the potentially dangerous abnormal heartbeat that afflicts more than 2 million Americans…

One trial described by researcher Dr. Douglas L. Packer, a cardiologist at the Mayo Clinic in Rochester, Minn., used a cryogenic -- frozen-tip -- catheter to treat 245 people with a form of atrial fibrillation in which there are unpredictable episodes of irregular or racing heartbeat.

HealthDay, by Ed Edelson, 3/15/2010

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Tags: Cardiology, Dr. Douglas L. Packer, irregular heart rhythm