Abstract
Atrial fibrillation is one of the most frequent complications of pneumonectomy, reaching a frequency of 37% regardless the side of surgical intervention. This enhances respiratory and hemodynamic disorders and increases the duration of intensive care unit stay, as well as the risk of thrombosis, and prolongs the recovery period after surgery. Therefore, it is advisable to identify the main risk factors of atrial fibrillation and develop methods for prevention and long-term recovery of sinus rhythm. In our report we present a clinical case of the atrial fibrillation one day after successful left-side pneumonectomy in a 69 y.o. patient without episodes of arrhythmia before. The consistent administration of antiarrhythmic drugs of different classes resulted in a short-term effect on sinus rhythm recovery. Subsequently, the patient was directed to the radiofrequency pulmonary veins isolation, as a result of which a stable sinus rhythm was achieved.