Cardiac ablation uses heat or cold energy to create tiny scars in your heart to block abnormal electrical signals and restore a normal heartbeat. The procedure is used to correct heart rhythm problems (arrhythmias).

Are ablations necessary?

Ablation can relieve symptoms and improve the quality of life in people with atrial fibrillation. But it doesn't work for everyone. If atrial fibrillation happens again after the first ablation, you may need to have it done a second time. Repeated ablations have a higher chance of success.

How serious is an ablation of the heart?

In general, cardiac (heart) catheter ablation is a minimally invasive procedure and risks and complications are rare. Catheter ablation may require an overnight stay in the hospital though most patients can return home the same day as the procedure.