经食管心房调搏在儿童阵发性室上性心动过速机制研究中的价值

目的探讨经食管心房调搏(TEAP)在儿童阵发性室上性心动过速(PSVT)机制研究中的价值。方法回顾性分析2008年1月至2013年12月行TEAP检查且后期行射频消融术(RFCA)的50例PSVT患者的电生理资料。结果以经心内电生理检查(IEPS)为诊断金标准,TEAP对房室结折返性心动过速(AVNRT)、左侧房室旁道(LAP)、右侧房室旁道(RAP)的灵敏度分别为92.9%、83.1%、90%,特异度为86.4%、100%、95%,准确性为90%、96%和94%。TEAP对AVNRT诊断符合率为92.9%(26/28),其中对慢快型AVNRT的诊断符合率为100%,而2例快慢型的AVNRT均被误诊为房室折返性心动过速(AVRT)。TEAP对AVRT诊断的符合率为86.4%(19/22),3例被诊断为慢快型的AVNRT。结论 TEAP对儿童PSVT发生机制的判定及初步定位具有很好的临床实用价值,但对少数PSVT发生机制的判定具有一定的局限性。

The value of transesophageal atrial pacing in assessing the mechanism of paroxysmal supraventricular tachycardia ;in children

Objective To explore the value of transesophageal atrial pacing (TEAP) in assessing the mechanism of paroxysmal supraventricular tachycardia (PSVT) in children. Methods The electrophysiological data of 50 children with PSVT who had undergone TEAP and, at a later stage, radio-frequency catheter ablation (RFCA) examination were retrospectively analyzed from January 2008 to December 2013. Results When using the intracardiac electrophysiological study (IEPS) as the diagnostic gold standard, the sensitivity of TEAP for atrioventricular nodal reentrant tachycardia (AVNRT), left accessory pathway (LAP) and right accessory pathway (RAP) was 92.9%, 83.1%and 90%respectively;the speciifcity was 86.4%, 100%and 95%respectively;the accuracy was 90%, 96%, and 94%respectively. The diagnostic accuracy of TEAP for AVNRT was 92.9%(26/28), the diagnosis accuracy for slow-fast AVNRT was 100%, but 2 cases of fast-slow AVNRT were both misdiagnosed as AVRT. The diagnostic accuracy of TEAP for AVRT was 86.4%(19/22) and 3 cases were misdiagnosed as slow-fast AVNRT. Conclusions TEAP has good clinical value in ifnding the mechanism of PSVT and its preliminarily location in children, but it has some limitations for some types of PSVT.