To compare the differences among atrial potential of atrial fibrillation and sinus rhythm after defibrillation with rheumatic heart disease (RHD), sinus rhythm with RHD, sinus rhythm with non-RHD.

• 摘要采用术中心外膜标测方法，对风湿性心脏病（简称风心病）慢性心房颤动（简称房颤）及其电复律后窦性心律、风心病窦性心律及非风心病窦性心律的心房电位进行比较研究。