【摘要】 目的分析在12导联动态心电图中频发性P on T房性早搏的形态、联律间期、前周期间期、时间分布,探讨其机制及临床意义。方法选自2013年1月至2013年12月在我院行12导联动态心电图检查诊断P on T房性早搏33例,分析其形态、联律间期、前周期间期、时间分布。并随访8~22个月,期间每3个月或患者有心前区不适来行动态心电图检查,或者以发现阵发性心房颤动/行射频消融术为终点。结果 33例中29例(87.9%)发生阵发性心房颤动;根据P on T房性早搏极性诊断起源部位,双上肺静脉占27例(81.8%),在28例行心内标测中25例(89.2%)符合;P on T房性早搏的联律间期364±46ms,时间分布:白天42.6%±14.3%,夜间54.3%±15.5%,p<0.05。结论频发性P on T房性早搏易引发阵发性心房颤动,并对确定其心电触发因素及部位和临床选择治疗方式、观察疗效都有重要的参考价值。更多还原

【Abstract】 Objective To analyze the morphology, coupling interval, the previous week period and time distribution of P on T atrial premature in 12 lead DCG, exploring its mechanism and clinical significance. Methods From 2013.01 to 2013.12 in our hospital of 12 lead dynamic electrocardiogram of 24 h examination in diagnosis of P on T atrial premature in 33 cases, analysis of its morphology, coupling interval, the previous week period, time distribution. They were followed up for 8 ~22 months, and recorded DCG every 3 months during or patients had discomfort, or finding the paroxysmal atrial fibrillation / radiofrequency ablation for the end. Results In 33 cases, 29 cases(87.9%) occurred paroxysmal atrial fibrillation. According to the P on T atrial premature polarity diagnosis site of origin, the double upper pulmonary vein accounted for 27 cases(81.8%). 25 cases(89.2%) meet in the 28 routine intracardiac mapping. The coupling interval is 364±46ms. Time distribution during the day accounted for 42.6%±14.3%,the night accounted for 54.3%±15.5%, p<0.05. Conclusions Frequent P on T atrial premature easily lead to paroxysmal atrial fibrillation.There is a important reference value to determine the curative effect observation of ECG triggering factors and the location and clinical treatment.更多还原