摘要
目的 :分析房室结慢径路消融术中出现的一过性交界性心律 (JR)的特征。方法 :2 1例 (男 6例 ,女 15例 )进行房室结改良术的房室结折返性心动过速患者 ,术中详细记录释放射频的次数、能量、持续时间、以及出现一过性交界性心律的时间、频率及数目 ,比较释放射频有效时 /无效时出现的一过性交界性心律之特征有无显著性差异。结果 :共进行 10 6次射频电流释放 ,其中 2 1次有效 (A组 ) ,85次无效 (B组 )。A组有 19次出现 JR,B组有 2 2次出现 JR(P <0 .0 5 ) ;JR的平均出现时间为 6 s,A组有 10次 ,B组有 4次出现的 JR在释放射频后 6～ 10 s(P <0 .0 5 ) ;每次 JR的平均个数为 7个 ,A组有 13次 ,B组有 7次出现的 JR个数大于 7(P <0 .0 5 ) ;JR频率中位数为 110次 / m in,A组有 8次 ,B组有 14次的 JR大于 110次 / m in (P >0 .0 5 )。结论 :慢径路改良过程中出现的一过性 JR是消融导管接近靶点的标志 ,JR的个数越多、出现时间在放电后 6～ 10 s则消融成功的可能性愈大。
Objective:To study the quantitative and qualitive aspects of junctional rhythm (JR) during RFCA of slow pathway in atrioventricular nodal reentrant tachycardia (AVNRT) patients Methods:[WT10.5,10.BZ]21 patients (6 males 15 females,ages raging from 23 to 68 ys,mean age 39+-9) with AVNRT,underwent RFCA of slow pathway During RFCA applications,electrocardiograph was continuously recorded The recordings were posteriorly used to study the presence and characteristics of JR (numbers of episodes,frequency and time of onset )at the effective and ineffective radiofrequency sessions All variables were expressed as median Univariate analysis of the effects of each variable on success or failure of ablation were performed,using x 2 test A P value <0 05 was considered significant Results:106 radiofrequency sessions were performed,21 effective and 85 ineffective(mean per patient 5,range from 1 to 17) JR was present in 19 of 21 effctive and 22 of 85 ineffective sessions (P<0 05) Median of time of appearance was 6 seconds,occurring between 6 and 10 seconds in 10 of 19 effective and in 4 of 22 ineffctive sessions (P<0 05) Median of number of episodes was 7,ocurring higher number in 13 of 19 effective and 7 of ineffective sessions (P<0 05) Median of frequency of JR was 110 bpm,8 of 19 effective and 14 of 22 ineffctive sessions (P>0 05) Conclution:JR during slow pathway ablation is a sensitive marker of ablation success JR as a predictor of success has higher number of episodes and more occur rences between 6 and 10 seconds than that one of ineffective sessions
出处
《广西医科大学学报》
CAS
2000年第1期50-52,共3页
Journal of Guangxi Medical University
关键词
房室结折返性心动过速
射频导管消融
交界性心律
atrioventricular node
atrioventricular nodal reentrant tachycardia
radiofrequency catheter ablation
junctional rhythm
