导管射频消融术治疗持续性交界区反复性心动过速2例报告

本文报告两例持续性交界区反复性心动过速(PJRT)患者,应用导管射频消融术治疗,成功地阻断了位于后间隔具有递减传导特性的稳若旁路.随访7～10个月.病人无心动过速发作,提示导管射频消融术是治疗PJRT的有效方法.     

阵发性心房颤动局灶消融后复发病例的大静脉肌袖电隔离治疗

对肺静脉内点消融治疗术后随访 2 2± 1 1 .1个月内的心房颤动 (简称房颤 )复发病例 ,在Lasso标测导管指引下 ,进行再次心内电生理检查及大静脉肌袖电隔离治疗。探讨点消融治疗阵发性房颤后复发的机制 ,并对再次经验性大静脉肌袖电隔离治疗的结果进行分析与评价。 5例患者共接受心内电生理标测和电隔离治疗 6次 (一例行第二次电隔离 ) ,除一例行右下肺静脉靶肌袖的电隔离外 ,其余病例均进行了经验性全部大静脉的电隔离 ,共电隔离心脏大静脉 1 5根 ,其中肺静脉 1 3根、上腔静脉 2根 ,即刻电隔离成功率 1 0 0 %。术后随访 1 1 .8± 8.9个月 ,均无房颤复发。因此 ,对于阵发性房颤导管射频点消融后复发病例进行经验性全部大静脉肌袖电隔离治疗可以满意控制房颤的发作。     

房室结慢径区域消融对迷走神经功能及心房颤动易感性的影响

Objective Atrioventricular node reentrant tachycardia (AVNRT) ablation may effect the vagal response,which is indicated by sinus tachycardia. On the other hand,atrial fibrillation (AF) ,which was found to be associated with vagal irmervation, often coexists with AVNRT. However,little is known about the im-pact of slow pathway ablation on local vagal innervation to atria. Methods In 11 dogs, bilateral cervical sympa-thovagal trunks were decentralized and metoprolol was given to block sympathetic effects. Linear lesion was per-formed from coronary sinus (CS) ostium to the middle area of Koch triangle. Atrial effective refractory period(ERP) ,vulnerability window (VW) of AF, and sinus rhythm cycle length (SCL) were measured at high fight atrium (HRA),low right atrium (LRA), distal (CSd) and proximal CS (CSp) at baseline with and without vagal stimulation before and after ablation. The histological study was also performed. Results (1) SCL during vagal stimulation remained unchanged before and after ablation(107±19)bpm vs (108±8) bpm (P > 0.05). (2) After ablation, ERP during vagal stimulation remained unchanged at HRA (55±34) ms vs (69 ±37) ms (P >0.05),and decreased slightly at CSd (42±32) ms vs (55±30) ms (P =0.08). However,at LRA and CSp,ERP was significantly decreased after ablation (19±21) ms vs (66±24) ms (P <0.001) ; and (7± 18) ms vs (46±24) ms (P < 0.001), respectively. (3) AF was difficult to be induced at baseline before and after ablation in all sites (VW close to 0). While during vagal stimulation, after ablation VW of AF significantly decreased at LRA (1±3) ms vs (49±36) ms (P < 0.005) and CSp (10±12) ms vs (45±34) ms (P < 0.05) ,decreased slightly at CSd after ablation (35±37) ms vs (57±28) ms (P =0.07) ,and remained un-changed at HRA (63±31) ms vs (63±25) ms (P > 0.05). (4) The altered architecture of individual gan-glia was histologically observed. Conclusions The decreased ERP shortening to vagal stimulation in CS and LRA induced by slow pathway ablation indicates that ablation in such area may result in the vagal dennervation in LRA and CS,thereby attenuating the susceptibility to vagal mediated AF. While unchanged SCL,ERP short-ening and VW to vagal stimulation in sinus node area and HRA indicate that slow pathway ablation did not change the vagal innervation to these sites.     

最紊乱的心房颤动波在肺静脉内及其口部的分布特点

越来越多的证据表明肺静脉与心房颤动（房颤）的发生和维持密切相关，肺静脉隔离术也成为目前房颤治疗的重要手段。最紊乱的房颤波分布部位可能是房颤维持的关键所在。本文分析了最紊乱的房颤波在肺静脉内及肺静脉口部的分布特点，解释肺静脉内快速紊乱的电活动是否是房颤的主要机制。[第一段]     

阵发性心房颤动大静脉电隔离后复发病例的再次电隔离治疗

背景导管射频消融尤其是肺静脉电隔离治疗是近年来心房颤动(简称房颤)治疗的热点,但如何降低一次消融后的房颤复发率以及房颤复发的原因是目前急需解决和探讨的焦点问题之一.     

阵发性心房颤动心脏大静脉肌袖电活动特征的临床研究

目的总结和探讨阵发性心房颤动(PAF)患者心内电生理标测中肺静脉和上腔静脉内肌袖电活动的特征以及与心房颤动的关系.     

Ebstein畸形合并右侧旁道的射频消融及靶点图特征探讨

报道６例Ｅｂｓｔｅｉｎ畸形合并右侧房室旁道患者（１例为外科手术切断未成功），其中顺向型房室折返性心动过速（ＡＶＲＴ）５例、逆向型１例。６例中有心房颤动和电击复律史者３例。经导管射频消融均成功地阻断了旁道。与心内结构正常的１５例右后侧壁显性旁道消融结果比较，平均消融时程（１３９±７４ｍｉｎｖｓ１１３±４６ｍｉｎ）、Ｘ线曝光时间（２８±１７ｍｉｎｖｓ２３±１２ｍｉｎ）均无显著性差异（Ｐ＞０．０５）。平均随访８±５月，１例术后６个月复发，经再次消融成功。其余病例未服用任何抗心律失常药物无心动过速复发。无并发症发生。提出掌握Ｅｂｓｔｅｉｎ畸形旁道消融的有效靶点图特征及其消融的特殊性，此种病人的消融疗效可与心内结构正常的旁道者相当     

导管射频消融电隔离心脏大静脉治疗阵发性心房颤动93例

目的总结导管射频消融行心房-肺静脉和(或)上腔静脉电隔离(大静脉电隔离)治疗阵发性心房颤动(房颤)的疗效. 方法选择发作频繁,症状明显,药物治疗无效的阵发性房颤患者,年龄小于75岁,无瓣膜病等器质性心脏病依据.     

导管射频消融电隔离肺静脉治疗局灶性心房颤动一例

导管射频消融治疗起源于肺静脉的局灶性心房颤动 (房颤 )是近年来心律失常介入治疗领域的热点 ,但由于复发率较高以及出现肺静脉狭窄等并发症 ,对其方法学有很大争议。近来我们对 1例局灶性房颤通过射频消融左肺静脉口成功的造成肺静脉与左心房之间的电隔离 ,现报道如下。　　资料和方法　患者男性 ,6 3岁 ,有阵发性心悸病史 10年 ,心电图和动态心电图示频发房性早搏 (房早 ) ,可见“Ｐ在Ｔ上”房早诱发短阵房颤 ,持续数分钟和数小时。平时房颤发作频繁 ,多种抗心律失常药物治疗无效。此次因发作房颤入院。入院诊断 :阵发性房颤 ,冠心病、陈…