Comparison of presystolic Purkinje and late diastolic potentials for selection of ablation site in idiopathic verapamil sensitive left ventricular tachycardia
Comparison of presystolic Purkinje and late diastolic potentials for selection of ablation site in idiopathic verapamil sensitive left ventricular tachycardia
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DOI：
10.1023/b:jice.0000042352.86366.fa
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发表时间：
2004-10-01
影响因子：
1.8
通讯作者：
Sadr-Ameli, MA
中科院分区：
文献类型：
--
作者：
Arya, A;Haghjoo, M;Sadr-Ameli, MA
背景资料：特发性维拉帕米敏感性左室心动过速（ILVT）是特发性左室心动过速（VT）最常见的形式。不同的方法已经提出了消融ILVT.Methods：2002年6月至2004年2月，15例患者（12名男性，年龄28+/-11岁，范围12至51）ILVT在我们的中心接受射频（RF）消融。方法：回顾性分析16例室性心动过速（VT）患者记录浦肯野电位（PP）和舒张晚期电位（DP）的意义及其对消融靶点选择和射频消融次数的影响。临床室性心动过速表现为右束支阻滞伴电轴左移14例，右束支阻滞伴电轴右移2例。心动过速时的QRS时限为124 ± 12 ms，心动过速周期长度为356 ± 53 ms，分别有11例和9例患者在射频消融靶区记录到DP和PP。PP-Q间期、DP-Q间期和DP宽度分别为18+/-4，53 +/-18和14+/-8 ms。射频消融次数为7.2+/-4.3。与靶向DP记录部位（5例患者，12.2+/-3.3）相比，最初靶向PP（有或无DP）记录部位（10例患者，4.7+/-1.8）的RF消融需要较少的应用（P
Background: Idiopathic verapamil-sensitive left ventricular tachycardia (ILVT) is the most common form of idiopathic left ventricular tachycardia (VT). Different methods have been proposed for ablation of ILVT.Methods: Between June 2002 and February 2004, 15 patients (12 men; age 28+/-11 years, range 12 to 51) with ILVT underwent radiofrequency (RF) ablation at our center. We retrospectively assessed the significance of recording purkinje potential (PP) and late diastolic potential (DP) and its effect on selection of ablation target and number of RF application.Results: Sixteen VTs were observed. The clinical VT had either RBBB and left axis morphology (14 cases) or RBBB and right axis morphology (2 cases). The QRS duration during tachycardia was 124+/-12 ms and the tachycardia cycle length was 356+/-53 ms. DP and PP were recorded at the targeted area for RF ablation in 11 and 9 patients respectively. The PP-Q interval, DP-Q interval and DP width were 18+/-4, 53+/-18 and 14+/-8 ms, respectively. The number of RF application was 7.2+/-4.3. Fewer applications were needed in whom RF ablation was initially targeted to PP (with or without DP) recording site (10 patients, 4.7+/-1.8) compared to those targeted to DP recording site (5 patients, 12.2+/-3.3) (P