Another medical procedure besides electrical cardioversion is ablation. It involves the removal of body tissue but is considered safe with minimal serious risks. Catheter ablation stops the irregular heartbeat in most patients because it destroys the parts of the heart that trigger the rhythm problem. Catheters are threaded through a vein into the heart. On the end of each wire is an electrode that creates heat to remove the bad tissue. Freezing the tissue off or using radiofrequency energy to ablate this heart tissue also works.

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