【摘要】 目的:探讨电重构对肺静脉内电位的影响。方法:窦性心律下,标测左心房和左上肺静脉的电位。在人工电刺激条件下,使左心房和左上肺静脉发生电重构,再次标测左心房和左上肺静脉的电位。结果:窦性心律下,左心房未测到尖峰电位,部分肺静脉内记录到尖峰电位,但不能驱动房颤的发生;电重构后,人工刺激,肺静脉内尖峰电位即提前且能驱动房颤的发生。结论:左上肺静脉更易于发生电重构;电重构后,左上肺静脉内尖峰电位即可提前且能驱动房颤的发生。更多还原

【Abstract】 Objective To observe the electrical remodeling effect on pulmonary veins. Methods The left atrial,left superior pulmonary veins were mapped in the sinus rhythm.Under electro-stimuls,the refractory of left atrial,left superior pulmonary vein were recorded.The left atrial,left superior pulmonary veins were remapped after electrical remodeling.Results Under sinus rhythm,the peak potential could be mapped in some left superior pulmonary veins.Paroxysmal atrial fibrillation could be initiated by peak potential originating from the pulmonary veins after electrical remodeling. Conclusion Pulmonary veins,especially superior pulmonary veins can be electrical remodeling.Paroxysmal atrial fibrillation could be initiated by peak potential originating from the pulmonary veins.更多还原