Patient: Description of condition (onset, main symptoms, hospital visited, etc.): I am 27 years old and was found to have pre-excitation syndrome type B with episodes of supraventricular tachycardia during a physical examination in 2007, which occurred once in early August this year, about 2 years after the last episode in 2008. No medication was used and it stopped on its own in about 2 hours. I have not been paying attention to it, and this time I feel that it lasts longer. I didn’t take any medication for it either. I went to Xuanwu Hospital cardiology department, the specialist said that the frequency of episodes is not high, no need for surgery. Another hospital specialist recommended radiofrequency ablation, saying that otherwise there is a possibility of sudden death. The two statements are opposite. Personally, I don’t want to operate, I’m afraid that the effect after surgery is not as good as no surgery, because after reviewing some information, I feel that surgery is still risky. I would like to hear your advice and suggestions, thank you, I am in Beijing, I can find you to see the doctor. Yao Yan, Department of Cardiovascular Medicine, Fu Wai Hospital, Beijing