方法：窦性心律下，标测左心房和左上肺静脉的电位。
Methods the left atrial, left superior pulmonary veins were mapped in the sinus rhythm.
结果：左心耳、左上肺静脉口、左下肺静脉口、右上肺静脉口及右下肺静脉口的ERP差异无统计学意义（P>0.05）；
Results: There was no difference among the ERPs of muscle in left superior and left inferior pulmonary vein ostia, right superior and right inferior pulmonary vein ostia and left auricle(P>0.05).
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