Monocentric, prospective, randomized trial of cardiac surgical arrhythmia using endocardial radiofrequency atrial ablation compared with a cryo ablation system in the setting of cardiac surgery.

Regular, rhythmic monitoring (24-hour Holter ECG, 5 and 28 days, 3 and 6 months po) of patients after cardiac surgery on the mitral valve with atrial ablation for paroxysmal, persistent, and permanent atrial fibrillation with regard to the presence or stability of sinus rhythm.

Inclusion Criteria:

• Patients ≥ 18 years
• Present, written informed consent from the patient
• paroxysmal, persistent, or permanent atrial fibrillation not longer than 10 years according to guidelines (ACC, AHA, ESC)
• planned cardiac surgery on the mitral valve
• ECHO parameters : LA size a.p. ≤ 55mm

Exclusion Criteria:

• permanent atrial fibrillation longer than 10 years
• ECHO parameters : LA size a.p. > 55mm
• pregnancy
• life expectancy < 12 months
• lack of cognitive or mental capacity to participate in the study
• Patients who are to be included in another clinical (interventional) study at the same time or who are already participating in such a study