采用EnSite NavX和X线结合下与常规X线下射频消融改良房室结折返性心动过速慢径的比较

Comparative Study of the Slow Pathway of Atrioventricular Nodal Reentry Tachycardia Modified by RFCA between Conventional X-ray and EnSite NavX Combined with X-ray

目的:探讨采用Ensite NavX和X线结合,行房室结折返性心动过速(atrioventricular nodal reentry tachycardia,AVNRT)的慢径改良的安全性和可行性。方法:63例阵发性室上性心动过速的患者经电生理检查证实为房室结双径路,接受射频消融术被随机分为采用EnSite NavX与X线结合组(32例)和常规X线透视组(31例)。结果:所有手术均获得即刻的成功,无手术并发症。与常规X线透视组比较,EnSite NavX与X线结合组手术时间少,X线曝光时间明显少,差异有统计学意义(P<0.05),其中有15例(46.88%)X线曝光时间(62.42±22.73)s。平均随访1年均无心动过速复发。结论:EnSite NavX与X线结合下行AVNRT慢径改良安全有效,且明显减少了X线曝光时间。

Objective： To explore the safety and feasibility of the modification of the slow pathway of atrial ventricular nodal reentrant tachycardia（AVNRT） under the EnSite NavX mapping guidance combined with X-ray.Method： 63 cases of atrioventricular nodal reentry tachycardia（AVNRT） confirmed by electrophysiological examination were randomly divided into the group using EnSiteNavX system combined with X-ray（32 cases） and conventional group only using X-ray（31 cases）.Result：All cases were immediately successful and no complications.The operative time was shorter in the EnSite NavX system combined with X-ray group than that in the conventional group only using X-ray, the X-ray exposure time in the EnSite NavX system combined with X-ray group was significantly less than that in conventional group only using X-ray, the differences were statistically significant（P〈0.05）.The X-ray exposure time of the 15 cases（46.88%） in EnSite NavX system combined with X-ray group was only （62.42 ± 22.73）s.At one year follow-up, there was no tachy-cardia recurrence.Conclusion： The EnSite NavX system combined with X-ray to steer RFCA of AVNRT is safe and effective.It can obviously reduce X-ray exposure time.