In ablation therapy, the cardiac tissue causing arrhythmia is targeted. In this procedure, a thin, flexible tube called a catheter is typically inserted into blood vessels and guided towards the heart. Once the target area in the heart is reached, various energy sources such as heat (radiofrequency ablation), cold (cryoablation), laser, or chemicals are applied to inactivate the tissue. Through these methods, the electrical pathways responsible for the heart producing irregular or abnormal rhythms are eliminated.

Specifically in radiofrequency (heat) ablation, radio waves are used to precisely heat the targeted tissue. This area, exposed to temperatures typically between 50 and 70 degrees Celsius, completely loses its function. Thus, the part causing arrhythmia and palpitations is permanently deactivated, and the patient's heart rhythm returns to normal.