First, an electrophysiological study will be carried out to map the points that produce irregular electrical impulses. At this stage, a catheter will be inserted into your body via a puncture, which can be made in the femoral artery. In some cases, it can be accessed through the arm, chest or neck. The doctor will guide this catheter to the left atrium to identify the points.

After mapping, ablation is performed. The catheter will be replaced by another with a small device that emits pulses or intense cold to isolate or cauterize the tissues and vessels responsible for the arrhythmia. Generally, the pulmonary veins are isolated.

The patient may be hospitalized for 24 hours. Before they are discharged, they will receive a series of instructions detailing the care they should observe in the post-intervention period, which is usually seven days. After this period, they can continue with their daily routine.