Patient: Female, 70 years old, diagnosed with pre-excitation syndrome six or seven years ago, with frequent episodes in the last year. The hospital said before the hospitalization that the surgery cannot be done without the ECG at the onset, but yesterday, Saturday, they said that the ECG was lost and the surgery can be done. Chen Taibo: If there is a clear history of seizures and no ECG, it is determined that surgery is undoubtedly possible. Patient: Thank you very much for your timely answer, our family is in anxiety, thank you again, wish you good work, happiness and peace! Chen, Taibo: I wish you a successful and smooth operation.