To evaluate and compare operator radiation exposure during the catheter placement in the coronary sinus via the femoral vein with a steerable catheter or the jugular vein with a fixed curve catheter.
Clinical EP Lab & Arrhythmia Center, Fuwai Hospital and Cardiovascular Institute, Peking Union Medical College (PUMC)-Chinese Academy of Medical Sciences (CAMS), 167 Beilishi Road, Xicheng, Beijing 100037, China.