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The surgical treatment of atrial fibrillation

During the last decade, surgical therapy in the treatment of cardiac arrhythmias has changed significantly. The development of catheter-based techniques in cardiology has ousted surgery, for example in the field of Wolff-Parkinson-White syndrome or in the major part of the surgical treatment of ventricular arrhythmias. Further indications for surgery still exist for the exclusion of the arrhythmogenic areas in the form of left ventricle reduction plasty, initially described by Vincent Dor. However, the surgical treatment of atrial fibrillation is rapidly gaining significance and popularity.
In the late eighties, Professor Cox and his co-workers put into practice the first surgical approach in the treatment of atrial fibrillation, which was performed by fragmentation of both atria with the “cut and sew” technique according to a particular pattern. This procedure was described as the Maze procedure. However, this very complex operation had to be performed using extracorporeal circulation. The rate of success in long-term follow-up after more than eight years was approximately 90% of sinus rhythm. Today, the Maze III procedure is described as the “golden standard” in the treatment of atrial fibrillation and is proven to be the most effective method in the prevention of cerebral embolism. However, these outstanding results could not be reproduced by most surgical groups. Due to its complexity, this procedure was not widely adopted in cardiac surgical centres and is applied very rarely nowadays.
After Professor Haissaguerre clarified that the focus of atrial fibrillation resides in the left atrium, and specifically in the pulmonary veins, numerous working groups focused their interest predominantly on the modes of treatment within the left atrium. Firstly, the idea of radiofrequency ablation, transferred from the cath-labs, was applied in the operating rooms from the endocardium. Using various energy sources (unipolar and bipolar radiofrequency, microwaves, ultrasound and cryothermy) during the last ten years, the surgical treatment of atrial fibrillation has gained popularity worldwide including both isolated stand-alone and combined procedure.
The rate of stable sinus rhythm after the operation ranges between 70 and 95%. According to scientific data, using exclusively left atrial ablation techniques for the treatment of paroxysmal, persistent or permanent atrial fibrillation without significant comorbidity, excellent...


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