690例快速心律失常的射频消融回顾分析

目的总结射频消融(RFCA)治疗快速心律失常病人的经验,提高其临床疗效和安全性.方法回顾分析690例快速心律失常的射频消融治疗,其中房室结折返性心动过速(AVNRT)260例,房室折返性心动过速(AVRT)385例,特发性室性心动过速(IVT)45例.结果经射频消融治疗后成功率为98.4%,复发率为1.3%,并发症发生率为3.5%.其中AVRT成功率为98.7%,AVNRT成功率为99.6%,IVT成功率为98.0%.结论RFCA治疗快速心律失常安全有效,成功率高.     

儿童心律失常的射频消融治疗

目的总结儿童心律失常患儿射频消融的疗效。方法回顾性研究2016年1月1日至2018年9月30日期间,因心律失常接受心内电生理检查+射频消融术治疗患儿的心律失常类型及疗效。结果 95例患儿进行了电生理检查,其中4例在术中未诱发心律失常,未行射频消融治疗。91例患儿中,阵发性室上性心动过速67例,其中房室折返性心动过速48例、房室结折返性心动过速19例,房性心动过速3例,室性心律失常21例。91例患儿射频消融术后随访(15±8)个月。84例消融成功,成功率92.31%;复发7例(7.69%),其中左侧隐匿性旁路复发3例(3/16),B型预激复发1例(1/23),左后分支室性心动过速3例(3/7)。只有1例患儿出现股浅动脉闭塞的并发症。结论射频消融治疗患儿心律失常安全有效。     

射频消融治疗快速心律失常54例次报告

本文报告用射频消融术治疗快速心律失常53例病人共54例次消融结果。总成功率96.3％。其中房室旁路伴房室折返性心动过速32例（32次），房室结双径路伴房室结折返性心动过速17例（18次），均无器质性心脏病，定性早搏3例（3次），心房纤额行房室结改良1例次。本组54例次消融治疗无任何并发症，提示对快速心律失常射频消融可作为常规的选择治疗方法。     

能量滴定法在慢径改良术中预防房室传导阻滞的作用研究

目的探讨“能量滴定法”在射频消融治疗房室结折返性心动过速术中对房室传导阻滞的预防作用。方法收集经射频消融术治疗的房室结折返性心动过速865例;消融过程采用“下位法+能量滴定法”。结果治疗成功率98.9%,复发率为2.08%,10例患者出现I°房室传导阻滞,无III°房室传导阻滞发生。靶点数≥5.0、有效靶点/总靶点<70%和累计消融能量(W*S)≥2300的患者房室传导阻滞的发生率明显增高(P<0.05),而复发率则无明显差异。结论射频消融术治疗房室结折返性心动过速减少累计消融能量、控制总靶点数和提高靶点有效率能有效减少房室传导阻滞的发生。     

冷冻导管消融与射频消融治疗房室结折返性心动过速对比分析

目的比较冷冻导管消融与射频消融治疗房室结折返性心动过速的有效性和安全性。方法回顾性分析中国医科大学附属第四医院2014年6月至2016年5月122例房室结折返性心动过速行导管消融术的患者,其中冷冻导管消融组56例,采用8 mm冷冻大头消融导管;射频消融组66例。比较两组患者成功率、复发率、房室传导阻滞发生率、手术时间及X线曝光量的情况。结果两组患者年龄、性别、器质性心脏病史、手术成功率比较,差异均无统计学意义(均P0.05);但射频消融组患者手术时间[(70.00±7.50)min比(66.29±4.72)min,P=0.001]、X线曝光量[(837.52±138.38)m Sv比(674.14±126.12)m Sv,P0.001]显著大于冷冻导管消融组,差异均有统计学意义。结论采用8 mm冷冻大头导管消融治疗房室结折返性心动过速安全有效,较普通射频消融术有潜在优势。     

导管射频消融术治疗儿童快速型心律失常

目的 探讨射频导管消融(radiofrequency catheter ablation,RFCA)治疗儿童快速型心律失常的有效性及安全性.方法 用体表心电图的大体定位及常规心内电生理检查,寻找消融靶点,采用温度控制方式进行RFCA.结果 心内电生理检查显示房室折返性心动过速(atrioventricular reentrant tachycardia,AVRT)10例,房室结折返性心动过速(atrioventricular nodal reentrant tachycardia,AVNRT)10例,房性心动过速(atrial tachycardia,AT)3例,特发性室性心动过速(idiopathic ventricular tachycardia,IVT)2例(1例起源于左后分支、1例起源于右心室流出道).手术即刻成功25例.术中1例在放置ABL导管时机械性的压迫希氏束出现一过性的Ⅱ～Ⅲ度房室传导阻滞(auriculo-ventricular block,AVB),给予异丙肾上腺素、阿托品、糖皮质激素处理,2 h后恢复正常的房室传导;2例放置希氏束电极时,出现Ⅰ度AVB,未经处理自行恢复正常的房室传导;22例平均随访(2.8±1.3)年未复发,3例半年后复发,其中AVNRT 2例,AVRT 1例,再次消融均获得成功.结论 RFCA治疗儿童快速型心律失常技术成熟、安全、疗效好.术后复发可能与消融点准确性、消融能量及消融时间趋于保守有关.     

回顾分析射频消融治疗快速性心律失常

目的:探讨射频消融术治疗快速性心律失常的临床疗效及安全性。方法:回顾分析射频消融术(RFCA)治疗快速心律失常病人1230例,其中房室结折返性心动过速(AVNRT)522例,房室折返性心动过速(AVRT)678例(左侧旁道598例,右侧旁道80例),特发性室性心动过速(IVT)30例。结果:经射频消融治疗后总成功率为97.8%,其中AVRT成功率为98.3%,AVNRT成功率为99.8%,IVT成功率为96.7%;复发率为1.6%。结论:射频消融术是根治快速心律失常的一种安全有效的方法,成功率高,并发症少。     

冷冻消融治疗房室结折返性心动过速的应用

房室结折返性心动过速,是目前最为常见的使用导管消融治疗的室上性心动过速,虽然目前射频消融术治疗房室结折返性心动过速具有很高的成功率,但是也伴有房室传导阻滞的风险。而冷冻消融技术作为近十年来在经皮导管消融治疗心律失常领域兴起的一项新兴技术,则与传统的射频消融术不同,它在对靶点进行消融形成永久性损伤之前,便可在进行冷冻标测时对消融靶点进行功能性的评价,确保消融的电生理安全性,避免了术后房室传导阻滞的风险,弥补了射频消融术的不足。现对应用冷冻消融治疗房室结折返性心动过速进行综述。     

射频消融治疗房性快速心律失常现状

导管射频亍肖融术自1987年应用于临床以来，现已成为治疗房室折逗性心动过速和房室结折返性心动过速安全和有效的方法，成功率可达95%。随着射频消融技术和心内电生理标测技术的发展。一些房性和室性快速心律失常的消融治疗逐渐成熟。兹就目前射频消融治疗房性快速心律失常(房性心动过速、心房扑动和心房颤动)的现状做一综述。     

射频消融治疗136例房室折返性心动过速临床分析

目的回顾性分析导管射频消融治疗房室折返性心动过速患者的疗效与安全性。方法随访观察我院136例房室折返性心动过速患者行导管射频消融治疗的成功率、复发率、并发症发生率。结果 136例患者中2例复发,1例术中出现一过性三度房室传导阻滞,经治疗后恢复正常心律,无死亡病例。结论导管射频消融治疗房室折返性心动过速成功率高,并发症少,安全有效。     

射频消融治疗快速心律失常428例总结

目的：报告射频消融术（RFCA）治疗快速心律失常的经验。方法：分析本院428例RFCA患者资料，其中房室结折返性心动过速（AVNRT）127例，房室折返性心动过速（AVRT）261例，特发性室性心动过速（IVT）28例，阵发性心房扑动（PAF）9例，房性心动过速（AT）3例。结果：消融总成功率96．9％（其中AVNRT97．6％，AVRT97．4％，IVT82．1％，PAF77．8％，AT100％），总复发率4．6％（其中AVNRT2．4％，AVRT4．3％，IVT 17．4％，PAF 14．3％），并发症发生率o．9％，无致命并发症出现。结论：RFCA治疗快速心律失常成功率高，并发症少，是安全有效的根治方法。     

儿童和青少年快速性心律失常的临床特点

研究儿童和青少年快速性心律失常的临床特点。选择 1995～ 2 0 0 2年在我院行射频消融 (RFCA)治疗的儿童和青少年快速性心律失常患者 ,共 32 1例 ,男 2 10例、女 111例 ,年龄中位数 13.4± 3.6 (1.5～ 18)岁 ;其中 ,房室折返性心动过速 (AVRT) 2 0 4例、房室结折返性心动过速 (AVNRT) 74例、特发性室性心动过速 (IVT) 35例、房性心动过速 (AT) 5例、心房扑动 (AFL) 2例、不适当窦性心动过速 (IST) 1例。记录所有病例术前未发作心动过速及心动过速发作时的体表 12导联心电图 ,结合电生理检查 ,分析其临床特点。结果 :AVRT、AVNRT和IVT分别占6 3.6 %、2 3.1%和 10 .9%。年岁较小的儿童和青少年 ,右侧旁道较多 ,随着年龄的增加 ,左侧旁道相对越来越多。B型预激合并多旁道较常见。 35例IVT ,其中 2 3例为左室IVT ;6例为右室IVT。 12例合并先天性心脏病 ;13例并发心动过速性心肌病 ,心功能及心脏大小在RFCA术后 3～ 6个月恢复正常。结论 :①AVRT、AVNRT和IVT是儿童和青少年快速性心律失常中最常见的 3种类型。②心动过速性心肌病经早期适当的治疗是可逆的。     

射频消融治疗快速性心律失常1108例临床总结

对1993～2003年10年间开展射频消融治疗的1108例快速性心律失常进行总结,统计其成功率、复发率、并发症发生率,并比较射频消融开始时与近期5年的有关指标。结果:①各种心律失常治疗总成功率为96.7%,其中房室折返性心动过速(AVRT)98.3%、房室结折返性心动过速(AVNRT)97.5%;总复发率3.7%,其中AVRT3.1%、AVNRT2.6%;总并发症发生率0.99%;②近期5年与开始时5年相比,每例患者的手术时间明显缩短(1.1±0.6hvs4.2±0.8h,P<0.001),X线照射时间减少(20.1±7.1minvs40.3±10.3min,P<0.001),复发率降低(1.6%vs6.8%,P<0.001),并发症发生率降低(0.6%vs1.6%,P<0.001),成功率进一步提高(98.40%vs93.20%,P<0.05)。结论:①射频消融根治快速性心律失常安全、有效、复发率低、并发症少;②随着治疗病例数增多,技术水平明显提高。     

体外无创性起搏终止快速心律失常的临床观察

为评价体外无创性程控起搏终止快速心律失常的疗效、安全性和患者的耐受性，对３１例房室折返性心动过速（ＡＶＲＴ）、１６例房室结折返性心动过速（ＡＶＮＲＴ）、１例房性心动过速、３例心房扑动和２例室性心动过速患者进行体外程控起搏终止心动过速的治疗。４７例ＡＶＲＴ和ＡＶＮＲＴ患者的６７次发作中６１次（９１．０％）被成功终止，其中ＡＶＲＴ的有效率（９３．５％）高于ＡＶＮＲＴ（８５．７％），Ｐ＜０．０５。１例室性心动过速被终止。所有房性心律失常都未被终止。同一输出电流强度下，递减刺激法终止ＡＶＲＴ和ＡＶＮＲＴ的总成功率（８６．４％）高于期前刺激法（４１．０％）和短阵超速抑制法（５５．０％），Ｐ均＜０．０５。部分患者有胸部皮肤疼痛感，但大多数患者能够耐受，且无心肌损伤。因此，体外无创性程控起搏可作为一种终止ＡＶＲＴ和ＡＶＮＲＴ的紧急治疗手段运用于临床     

食管心房调搏诊断室上性心动过速的临床研究

为探讨食管心房调搏揭示室上性心动过速发生机制的价值和局限性,回顾性分析成功射频导管消融的１３８例隐匿性单房室旁道参与的顺向型房室折返性心动过速和１００例单一类型房室结折返性心动过速的食管心房调搏结果。结果显示：前１３８例中,３例前间隔旁道引起者食管心房调搏均诊断为房室结折返性心动过速余为左右侧其它部位的旁道,诊断正确。后１００例中,５例为慢－慢型,２例为快－慢型,食管心房调搏均诊断为房室折返性心动     

Influence of age and gender on the mechanism of supraventricular tachycardia.

OBJECTIVES: The objective of this study was to determine the impact of age and gender on the mechanism of paroxysmal supraventricular tachycardia (PSVT). BACKGROUND: Previous studies have indicated that PSVT mechanism may be influenced by age and gender, but contemporary data are limited. METHODS: In 1,754 patients undergoing catheter ablation of 1,856 PSVTs between 1991 and 2003, the mechanism was classified as atrioventricular reentrant tachycardia (AVRT), atrioventricular nodal reentrant tachycardia (AVNRT), or atrial tachycardia (AT). Patients with inappropriate sinus tachycardia, atrial flutter, atrial fibrillation, and age <5 years were excluded. RESULTS: The mean age was 45 +/- 19 years (range 5-96), and the majority were women (62%). Overall, AVNRT was the predominant mechanism (n = 1,042 [56%]), followed by AVRT (n = 500 [27%]) and AT (n = 315 [17%]). There was a strong relationship between age and PSVT mechanism; the proportion of AVRT in both sexes decreased with age, whereas AVNRT and AT increased (PM < .001 by ANOVA). The majority of patients with AVRT were men (273/500 [54.6%]), whereas the majority of patients with AVNRT and AT were women (727/1,042 [70%] and 195/315 [62%], respectively). The distribution of PSVT mechanism was significantly influenced by gender (P < .001). In women, 63% had AVNRT, 20% had AVRT, and 17.0% had AT. In men, 45% had AVNRT, 39% had AVRT, and 17% had AT. AVNRT replaced AVRT as the dominant PSVT mechanism at age 40 in men and at age 10 in women. CONCLUSIONS: The mechanism of PSVT in patients presenting for ablation is significantly influenced by both age and gender.     

Radiofrequency ablation for treating paroxysmal supraventricular tachycardia complicated by atrial fibrillation:A single-center retrospective analysis

Background The effect of selective radiofrequency ablation for treating paroxysmal supraventricular tachycardia(PSVT) and its associated paroxysmal atrial fibrillation(PAF) was assessed. Methods Data were collected retrospectively from patients diagnosed of PSVT and subsequently treated with radiofrequency ablation. Regular monthly follow-up by dynamic electrocardiography(ECG) was performed. Incident rates of atrial fibrillation before and after ablation were compared. Results 382 PSVT patients with 58 having atrial fibrillation were enrolled. The order of complicated PAF from high to low in these patients was displayed as: atrial tachycardia(AT),atrioventricular reentrant tachycardia(AVRT) and atrioventricular nodal reentrant tachycardia(AVNRT). Among AVRT patients, PAF was more frequent in patients having accessory pathways. AVNRT patients had significantly lower PAF rate comparing to other patients. PAF incident rate was significantly reduced by radiofrequency ablation therapy. Conclusion We advise regular dynamic ECG for PSVT patients, especially those with atrial flutter, AT or pre-excitation syndrome. Selective radiofrequency ablation is a feasible approach for treating AF complicated PSVT patients.     

Usefulness of ST-segment elevation in lead aVR during tachycardia for determining the mechanism of narrow QRS complex tachycardia

In the present study, we analyzed ST-segment elevation in lead aVR during tachycardia to differentiate the narrow QRS complex tachycardia. A total of 338 12-lead electrocardiograms during narrow QRS complex tachycardia were analyzed. Each patient underwent a complete electrophysiologic study. There were 161 episodes of atrioventricular nodal reentrant tachycardia (AVNRT), 165 episodes of atrioventricular reciprocating tachycardia (AVRT), and 12 episodes of atrial tachycardia (AT). The prevalence of aVR ST-segment elevation was 71% for AVRT, 31% for AVNRT, and 16% for AT. For ST-T changes in different leads, logistic regression analysis showed aVR ST-segment elevation was the only significant factor to differentiate the types of narrow QRS complex tachycardia (p <0.001 for AVRT and AVNRT; P = 0.02 for AVRT and AT). The sensitivity, specificity, and accuracy of aVR ST-segment elevation to differentiate AVRT from AVNRT and AT were 71%, 70%, and 70%, respectively. Among 117 episodes of AVRT with aVR ST-segment elevation, there were 76 (65%) left side, 23 (20%) right side, 14 (12%) posterior septal, and 4 (3%) antero- and mid-septal accessory pathways (p = 0.002). In conclusion, aVR ST-segment elevation during narrow QRS complex tachycardia favors the atrioventricular reentry through an accessory pathway as the mechanism of the tachycardia.     

Detection of concealed left sided accessory atrioventricular pathway by P wave signal averaged electrocardiogram

Objectives. The purpose of this study was to examine whether P wave signal-averaged electrocardiogram (P-SAECG), which detects subtle changes in P wave, detects the concealed accessory atrioventricular pathway (AP).Background. It is difficult to differentiate atrioventricular reciprocating tachycardia (AVRT) due to the AP from atrioventricular nodal reentrant tachycardia (AVNRT) when the ventricular preexcitation is absent on 12-lead electrocardiograms. By electrophysiological studies, the anterograde conduction in the concealed AP is shown to be blocked near the AP-ventricular interface during sinus rhythm.Methods. P-SAECG during sinus rhythm was performed in 20 normal volunteers (control), 21 patients with AVRT due to the concealed AP, 19 with AVNRT, 22 with paroxysmal atrial fibrillation (PAF), and 7 with automatic atrial tachycardia (AT). The filtered P wave duration (FPD) and AR20 (power spectrum area ratio of 0–20 to 20–100 Hz) were measured and repeated in AVRT, AVNRT and AT groups at one week after catheter ablation.Results. The anterograde conduction in the concealed left-sided AP was confirmed in all cases by an electrophysiological study. The FPD in AVRT group was more prolonged than that in controls or AVNRT group. Although the FPD was similar between AVRT and PAF groups, AR20 differentiated between the two groups. Ablation of the concealed AP shortened FPD in AVRT group but that of the slow pathway or the atrial focus did not shorten in the AVNRT or AT groups, respectively. The changes in FPD after ablation were correlated with those in the duration of atrial activity by an electrophysiological study (r = 0.67).Conclusions. Our findings suggest that P-SAECG detects the concealed left-sided AP, providing a clinical tool in noninvasively assessing atrial activation patterns.