CAJ | 학술논문

目的从不同亚型房室结折返性心动过速电生理学特性及射频消融前后房室结快径前传不应期差异.探讨其电生理学机制.方法 178例慢快型房室结折返性心动过速患者中按消融完成顺序取连续30例,与慢慢型11例和快慢型8例,比较AH跳跃、心动过速时HA、△VA等电生理参数差异,以及射频消融术前后房室结快径前传不应期改变.结果慢慢型患者AH跳跃明显小于慢快型及快慢型,HA、△VA介于后两型之间;慢快型及快慢型消融术后快径前传不应期显著缩短,慢慢型则有轻度延长趋势.结论慢慢型房室结折返性心动过速电生理特性明显不同于慢快型及快慢型,消融前传慢径后房室结快径前传不应期未相应缩短,支持其折返环中尚存在逆传慢径.
목적 종불동아형방실결절반성심동과속전생이학특성급사빈소융전후방실결쾌경전전불응기차이.탐토기전생이학궤제.방법 178례만쾌형방실결절반성심동과속환자중안소융완성순서취련속30례,여만만형11례화쾌만형8례,비교AH도약、심동과속시HA、△VA등전생리삼수차이,이급사빈소융술전후방실결쾌경전전불응기개변.결과 만만형환자AH도약명현소우만쾌형급쾌만형,HA、△VA개우후량형지간;만쾌형급쾌만형소융술후쾌경전전불응기현저축단,만만형칙유경도연장추세.결론 만만형방실결절반성심동과속전생리특성명현불동우만쾌형급쾌만형,소융전전만경후방실결쾌경전전불응기미상응축단,지지기절반배중상존재역전만경.
Objective To investigate the electrophysiolnglcal mechanism aceording to the electrophysiolngical characteristics of different sub-forms of AVNRT(atrioventricular nodal reentrant tachycardia)and differences in refractory period of fast pathway before and after radiofrequency catheter ablation.Methods Electrophysiological parameters of AH jump,HA interval and △VA et al.were compared between consecutive 30.cases of 178 patients with slow/fast AVNRT,11cases with slow/slow AVNBT and 7cases with fast/slow AVNRT.The differences in refractory period of antngrade fast pathway before and after RFCA were also compared.Results AH jump of slow/slow patients was apparently shorter than that of slow/fast and fast/slow patients.HA interval and △VA of slow/slow patients were between slow/fast and fast/slow.Refractory period of slow/fast and fast/slow after BFCA became shorter remarkably.However,refractory period of slow/slow was prone to elongate slightly.Conclusion Electrophysiological characteristics of slow/slow AVNRT is quite different from slow/fast and fast/slow.Antegrade slow pathway ablated,refractory period of antegrade fast pathway of slow/slow are not shorten.It supports that there exists retrograde slow pathway in reentrant circuit of alow/slow AVNRT.