Low recruitment

Randomized phase III clinical trial to compare the efficacy of the two most widely used ablation techniques (cryotherapy and radiofrequency) after recurrence of atrial fibrillation (AF) in patients requiring a new ablation procedure.

Inclusion Criteria:

• Paroxysmal FA (one that ends, spontaneously or not, within 7 days of its onset. GUIDELINES ESC FA 2020)
• Have undergone an initial AF ablation procedure using Cryoballoon or point-to-point focal RF within the three years prior to the initial visit.
• During the initial AF ablation procedure ONLY pulmonary vein isolation / ablation will have been performed
• Documented recurrence of AF lasting more than 30 seconds after the first ablation procedure.
• With the ability and willingness to sign the informed consent of the patient.
• With a minimum follow-up capacity of 12 months.

Exclusion Criteria:

• Patients aged <18 years.
• Previous heart surgery.
• Moderate or severe mitral valve disease.
• Severe dilation of the left atrium, defined as a volume greater than 48 ml / m2 or a left atrial diameter greater than 50 mm in the parasternal long axis.
• Contraindication for anticoagulation.
• Pregnancy or pregnancy intention during the 12-month follow-up.
• Life expectancy less than 12 months.
• Unavailability for follow-up for 12 months.
• Simultaneous participation in another clinical trial