Hello, the precautions are as follows: 1. Weakness and chest discomfort may occur within 48 hours after operation. If the symptoms are obviously aggravated or last for a long time, please inform your doctor, and the doctor will deal with them according to the specific situation. 2. After braking for 6-8 hours, you usually need to be hospitalized for 3 days. 3. Anticoagulants such as warfarin should be taken in the first three months after operation to prevent thromboembolism. At the same time, INR (an index for evaluating warfarin dose) needs to be monitored frequently to keep it within an appropriate range of anticoagulant strength. 4. Arrhythmia may still occur within three months after operation, so you should continue to take antiarrhythmic drugs to fight it for about two or three months after operation, and if necessary, cardioversion treatment. 5. After the operation, your family should accompany you home. You don't need to stay in bed for a long time. You can do appropriate activities to help restore your body's function (such as taking a walk). 6. Don't swim for five days after returning to China. Try to take a bath and avoid a bath. Keep the puncture point clean and dry. Usually you can move normally 48 hours after operation, but you should avoid lifting more than 10 pounds within one week. 7. You may still feel palpitations or even short-term atrial fibrillation within three months after operation. This phenomenon is normal because the atrial muscle stops suddenly after operation. When the heart function is fully recovered, it is possible to recover. If this happens, please contact your doctor. 8. If the following conditions occur, please contact a doctor: local redness or hematoma with atrial fibrillation symptoms, and the body temperature exceeds 38.4 degrees Celsius.