Atrial fibrillation is the most common arrhythmia
following valvular heart surgery. Radiofrequence catheter ablation of atrial
fibrillation in patients with prothetic mechanical mitral valve is feasible and
relatively safe in experienced center. Implementation of real-time three dimensional transoesophageal echocardiography in atrial fibrillation can demonstrate on-line
left atrial and left atrial appendix spontaneous echo contrast and thrombus. This condition makes the electrophysiologist
allerted for the expected complications.