Atrial fibrillation surgery may be followed by conduction block, narrowing of the pulmonary vein orifices, and embolization of organs. 1. Conduction block: If the AV node is damaged during the surgery, atrioventricular block of the heart may occur after the surgery. This is usually an irreversible change and needs to be treated by implanting a pacemaker. 2. Stenosis of the pulmonary vein orifices: Atrial fibrillation surgery requires radiofrequency ablation if the lesion is near the patient’s pulmonary vein orifices. Radiofrequency ablation in this area may cause stenosis of the pulmonary vein orifices in some patients. 3. Embolism of organs: small blood clots in the heart may cause embolism of important organs if the clots are dislodged during the procedure. Such as cerebral embolism, mesenteric artery embolism and other conditions. After atrial fibrillation surgery, closely monitor the heart rate and blood pressure. In normal life, you should pay attention to more rest, keep local hygiene and cleanliness, avoid bleeding or infection and other complications.