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目的 探讨10极Lasso电极导管对局灶性房性心动过速(房速)标测及射频消融的指导作用.方法 局灶性房速病人5例,接受电生理检查,初步判断房速起源于左心房或右心房;应用Lasso电极标测心房,指导消融导管寻找局灶性房速最早心房激动(A波)点,于最早心房激动点处消融.结果 局灶性房速病人5例均在房速持续发作时进行Lasso电极标测;消融导管在Lasso电极指导下分别于左心房耳部(2例)、左上肺静脉口部(1例)、上腔静脉(1例)、右心房侧壁(1例)标测到最早A波;较P波提早30~40 ms;Lasso电极记录的A波顺序均呈离心性;在上述最早激动点处消融,均成功终止房速,放电次数为1~3次;未出现并发症;随访2~20个月,无复发;手术时间40~60 min,X线照射时间8~12 min.结论 应用Lasso电极指导标测与射频消融局灶性房速,快速、准确,可提高消融成功率,减少X线照射时间,缩短手术时间,特别对病灶位于心内大静脉、心房耳部病例尤有帮助. 相似文献
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《中国心脏起搏与心电生理杂志》2015,(6)
目的总结本院射频消融治疗局灶性房性心动过速(简称房速)的消融点、方法及疗效。方法分析5年间40例行射频消融治疗的房速患者的临床资料,探究消融靶点的分布、消融术的成功率和特殊起源点的消融方法,随访复发情况。结果 1起源于右房的房速多于左房(60%vs 40%)。右房常见消融点依次为右房间隔、界嵴、三尖瓣环、冠状窦口、上腔静脉和右心耳。左房常见消融点依次为肺静脉、左房间隔和左心耳。2射频消融治疗的成功率为85%(34/40)。85%的患者在En Site 3000三维标测指引下消融。3起源于右房间隔His束旁的6例房速通过无冠窦消融成功治愈4例,另2例于His束周围低功率消融失败。结论三维标测系统指引下行射频消融治疗局灶性房速效果肯定。His束旁起源的房速可通过主动脉无冠窦内消融。 相似文献
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目的 探讨小儿局灶性房性心动过速(房速)的起源位置、电生理特点和射频消融结果.方法 2010年7月至2013年7月清华大学第一附属医院心脏中心小儿科住院接受射频消融的局灶性房速患儿38例,年龄3.0~13.6(7.9±3.3)岁.分析不同起源位置的局灶性房速射频消融效果、复发及并发症的发生情况,对比不同年龄组射频消融效果.结果 38例患儿中20例(20/38,52.6%)为无休止性房速,18例(18/38,47.4%)为阵发性房速.38例患儿中的12例(31.6%)并发心动过速性心肌病,其中10例(10/12,83.3%)继发于无休止性房速.房速起源部位以心耳部位最为多见(12/38,31.6%),其次依次为肺静脉(7/38,18.4%)、心房壁(7/38,18.4%)、房间隔(7/38,18.4%)、冠状静脉窦口(3/38,7.9%)、上腔静脉(1/38,2.6%)、三尖瓣环(1/38,2.6%).38例患儿中的36例(36/38,94.7%)射频消融成功,复发10例(10/36,27.8%).复发病例中7例(7/10,70.0%)为心耳起源,外科手术将患侧心耳切除后均未再复发.18例(18/38,47.4%)发病年龄≤3岁,20例发病年龄>3岁;≤3岁组和>3岁组无休止性房速的发生率、心动过速性心肌病的发生率及起源部位的比例差异无统计学意义.结论 ①对于抗心律失常药物治疗无效的小儿局灶性房速患者,射频消融是安全且有效的治疗方法;②小儿局灶性房速以起源于心耳最为常见;③起源于心耳部位的局灶性房速复发率与失败率最高,外科心耳切除术为安全有效的补充根治方法;④小儿无休止性局灶性房速更易进展为心动过速性心肌病. 相似文献
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目的 探讨起源于心房后间隔及邻近区域局灶性房性心动过速(房速)心脏电生理特点及射频导管消融特点.方法 入选23例患者,男12例,女11例,平均年龄(48.3±19.3)岁,自发或心房程序刺激诱发房速后,分析体表心电图P'波特点并于后间隔各个部位进行激动标测和射频消融治疗.结果 23例心房刺激均能反复诱发或终止房速,平均周长(346.7±61.8) ms,房速时P'波时限明显短于窦性心律时P波时限[(86.2±14.0)ms对(115.4±19.9) ms,P<0.05].体表P'波表现为Ⅰ导联多呈等电位线,下壁导联呈深倒负向波,aVR和aVL导联呈正向波,V3~W5导联呈负向波.常规激动标测,所有患者于冠状静脉窦口(CSO)附近标测到相对提前的心房激动,其中12例起源于右后间隔,6例起源于CSO及近端,2例起源于心中静脉,3例起源于左后间隔.靶点提前体表P'波平均(34.4±18.0) ms,放电开始至心动过速终止时间为(6.2±4.2)s,11例患者放电过程中出现交界区心律.所有患者均消融成功,其中3例需应用盐水灌注导管.随访4个月~ 10年,无复发病例及手术相关并发症.结论 后间隔局灶性房速P'波形态具有特异性,对导管消融定位意义较大.由于解剖的复杂性,部分病例标测和消融困难,需结合右心房后间隔、冠状静脉窦(CS)内和/或其分支、左心房后间隔等多部位标测和/或消融方能获得成功. 相似文献
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目的探讨局灶性房性心动过速(简称房速)的临床和电生理、靶点标测及导管射频消融(RFCA)的结果。方法16例房速行心内电生理检查和RFCA,房速靶点标测采用激动标测方法,射频消融功率设置20—30W,或预设温度50-60℃放电消融。结果经电生理确诊为房速16例,RFCA即刻成功15例(93.75%),15例房速共有17个起源病灶,分布在右房侧壁5个,房间隔5个,希氏束(HIS)旁2个,上腔静脉(SVC)1个,左上肺静脉(LSPV)2个,右上肺静脉(RSPV)2个。合并左前侧壁旁道(AVRT)1例,消融旁道后诱发不出房速,合并房室结折返心动过速(AVNRT)1例,房速的起源灶就在间隔中下部,消融靶点相当于HIS与冠状动脉窦(CS)口间中下1/3处,消融效果如改良房室结,结果房速及AVNRT均不能再诱发。1例LSPV房速,2个月后复发,并诱发出AF及Af,做LSPV电隔离消融获得成功。有1例HIS旁房速,术中出现三度房室传导阻滞(AVB)。结论局灶性房速RFCA成功率高,病灶起源部位以右心房侧壁及房间隔多见,HIS旁房速作消融要谨慎,应尽量避免出现三度AVB并发症。 相似文献
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目的探讨结合左心耳电位快速鉴别二尖瓣环折返性房性心动过速(房速)的临床应用价值。方法连续348例心房颤动(房颤)导管消融患者中发生大折返房速时,将环状标测电极置于左心耳内,消融导管置于左心房前壁,根据冠状静脉窦、左心耳和左心房前壁电位的激动模式初步判断大折返房速的机制,然后在Carto系统指导下进行激动标测和拖带标测明确折返机制,评价结合左心耳和冠状静脉窦电位快速鉴别诊断二尖瓣环折返的准确性和特异性。结果40例房颤患者消融过程中共发生经Carto系统激动标测及拖带验证明确诊断的53种大折返房速,其中24种二尖瓣折返、19种三尖瓣折返和10种房顶依赖的折返。24种二尖瓣折返中,8种为冠状静脉窦近端领先的逆钟向折返,均表现为冠状静脉窦近端.中间.远端一左心耳(CSP—CSM—CSD-LAA)的激动模式,16种是冠状静脉窦远端领先的顺钟向折返,均表现为左心耳一冠状静脉窦远端一中间一近端(LAA—CSD—CSM—CSP)的激动模式。与Car-to指导的激动标测和拖带标测出的折返环相比,用CSP·CSM-CSD—IJAA或LAA—CSD—CSM—CSP的激动模式判断二尖瓣折返性房速总体敏感性100%,特异性75%,结合左心房前壁电位可进一步提高诊断特异性。结论结合左心耳电位的快速标测是鉴别二尖瓣环折返性房速的有效方法。 相似文献
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目的探讨体表心电图房性P波形态对局灶性房性心动过速的预测价值。方法选取52例均经射频导管消融(下称消融)治疗成功的房性心动过速患者房性心动过速发作时体表心电图房性P波,分析P波的形态特征及其与房性心动过速起源部位的关系。结果V1P波正相预测左心房起源房性心动过速的敏感性和特异性分别为82.4%和80.0%;而I和aVL P波负相预测左心房起源房性心动过速的敏感性分别为4617%和52.9%,特异性分别达100.0%和88.2%;V1P波负相预测右心房起源房性心动过速的敏感性和特异性分别为80.0%和100.0%。心电图与消融诊断房性心动过速起源的比较,差异无统计学意义(P〉0.05)。结论通过房性心动过速发作时的P波形态分析,可初步预测局灶性房性心动过速的起源部位,为消融术前准备及选择恰当的手术方式提供一定临床参考。 相似文献
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目的:报道心房耳尖部房性心动过速(房速)的临床特点和射频消融结果。方法:对7例[男性2例,女性5例,平均年龄(24.8±7.9)岁]房速患者进行体表心电图和动态心电图检查。采用三维电解剖(Carto)标测系统,确定房速病灶的起源部位和指导经导管射频消融。结果:7例房速均为持续性发作(5~432个月,中位数96个月),未发现器质性心脏病。房速起源于右心房耳尖部(1例)和左心房耳尖部(6例),呈局灶性和异常自律性增高机制。7例房速均消融成功,无并发症。随访7~28个月(中位数15个月),无一例房速复发。结论:心房耳尖部房速表现为持续性发作和异常自律性增高机制。采用三维电解剖标测系统和盐水灌注消融导管,可提高病灶定位的准确性和消融的成功率。 相似文献
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主动脉无冠状窦内射频导管消融前间隔局灶性房性心动过速 总被引:2,自引:1,他引:2
目的报告经主动脉无冠状窦内射频消融8例前间隔局灶性房性心动过速(房速)。方法8例患者男性3例,女性5例,平均年龄(50.6±12.3)岁。阵发性房速病史(7.5±5.5)年。术中心房和心室刺激诱发房速,分别在右心房、左心房和主动脉无冠状窦内标测最早心房激动,并进行消融。结果心房刺激能反复诱发和终止8例患者的房速,房速的平均周长(329±66)ms。右心房和左心房的前间隔部位标测相对提前的心房激动,但多次消融未成功。主动脉无冠状窦内的心房激动较希氏束处的心房波提前(11.6±7.2)ms,放电1~2次于8s内终止8例房速。随访(10.2±4.8)个月,无一例房速复发。结论主动脉无冠状窦内可作为消融前间隔局灶性房速的一种新途径,尤其适用于在希氏束部位消融失败的患者。 相似文献
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目的 报道应用三维标测指导射频导管消融起源于右心耳的局灶性房性心动过速(房速),并初步探讨其临床及心电学特征.方法 共6例患者(男性4例,女性2例,年龄(43±19)岁]临床诊断为窄QRS心动过速,其中3例曾行常规射频消融失败,4例左心房内径明显扩大.经电生理检查证实为房速.术中行EnSite-NavX激动标测或者Carto电解剖标测以明确局灶性房速并指出最早激动大致范围.在局部做精细标测找到心房最早激动处,于心动过速时应用盐水灌注导管放电消融,能量30~40 W,温度43℃.即刻成功指标为心动过速终止并不再被诱发.结果 6例心动过速平均心动周期为(343±53)ms.三维激动标测结果显示房速呈右心耳部位点状扩布,并且整个右心房激动时间占心动周期的27%±8%.成功消融靶点局部A波较体表心电图P波提前(52±13)ms.消融后行右心房心耳造影确认消融导管位置.6例右心耳房速均成功消融且未有并发症发生.随访3个月其中1例复发心动过速,经再次标测证实为三尖瓣前侧部局灶性房速并且成功消融.左心房扩大者心房内径较术前显著缩小[(41±6)mm对(36±6)mm,P<0.05].结论 局灶性房速可起源于右心耳并可以成功消融.三维标测有助于靶点定位及消融成功. 相似文献
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Fabien Squara MD Didier Scarlatti MD Delphine Baudouy MD PhD Sok-Sithikun Bun MD PhD Pamela Moceri MD PhD Emile Ferrari MD 《Journal of cardiovascular electrophysiology》2023,34(7):1577-1581
Introduction
We describe an unusual case of atrial tachycardia (AT) emanating from the left atrial appendage body (LAA), successfully treated by chemical ablation.Methods
A 66-year-old patient with cardiac amyloidosis and history of persistent atrial fibrillation ablation presented poorly tolerated AT with 1:1 atrioventricular nodal conduction at 135/min, despite amiodarone therapy. Three-dimensional mapping suggested a reentrant AT from the anterior aspect of the left LAA.Results
The tachycardia could not be terminated with radiofrequency ablation. The LAA vein was then selectively catheterized and infused with Ethanol, resulting in immediate termination of tachycardia, without LAA isolation. No recurrence occurred at 12 months.Conclusion
Atrial tachycardias emanating from the LAA that are resistant to radiofrequency ablation may respond to chemical ablation of the LAA vein. 相似文献14.
目的 报道一组起源于左心耳局灶性房性心动过速(房速)的电生理特征和射频消融治疗.方法 9例患者中男性5例,平均年龄(21±9)岁,经心内电生理检查和射频消融证实为起源于左心耳的房速,对其电生理特点及射频消融进行分析.结果 左心耳房速表现为无休止性或静脉滴注异丙肾上腺素诱发,程序刺激不能诱发或终止房速.左心耳房速有独特的体表心电图特征,所有患者P波Ⅰ、aVL导为负向,Ⅱ、Ⅲ、aVF导联P波高而直立.V_1导P波为直立或正负双向(以直立为主),V_2~V_6导P波为等电位线(5例)或<0.1 mV低幅直立(4例).常规心内标测,最早心房激动为CS远端.成功靶点处局部心房激动领先P波起始(36.7±7.9)ms.5例患者最终使用盐水灌注导管消融成功,随访(12 ±5)个月无房速复发.结论 左心耳房速有独特的心电图特征和房内激动顺序,对这类房速盐水灌注导管可能是更好的选择,左心耳内局灶消融长期随访安全有效. 相似文献
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Video-assisted thoracoscopy to treat atrial tachycardia arising from left atrial appendage 总被引:1,自引:0,他引:1
Yamada Y Ajiro Y Shoda M Kawai A Hagiwara N Kurosawa H Kasanuki H 《Journal of cardiovascular electrophysiology》2006,17(8):895-898
A 17-year-old male with tachycardia-induced cardiomyopathy presented with persistent, drug-resistant atrial tachycardia (AT). An electrophysiological study suggested focal abnormal automaticity, and localized the AT origin to the left atrial appendage. Radiofrequency catheter ablation at the site of the earliest endocardial activation during AT failed. A minimally invasive, video-assisted thoracoscopic (VAT) atrial appendectomy terminated the AT and restored left ventricular contractility. The patient remained free of AT and normal left ventricular function was maintained over a 24-month follow-up period. To our knowledge, we are the first to use VAT atrial appendectomy to treat focal AT. 相似文献
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Temperature sensitivity has not been reported in focal atrial tachycardia. We describe a patient with a left atrial tachycardia whose tachycardia rate was affected by hot and cold drinks. The effects were still evident after autonomic blockade. The arrhythmia focus was located at the entrance of the left upper pulmonary vein. Radiofrequency ablation was carried out, which proved to be difficult, but it was successful after several applications of energy, suggesting an epicardial location of the arrhythmia focus. Sensitivity of atrial tachycardia rate to the temperature of food or drink ingested suggests a left atrial focus with a posterior and possibly epicardial location. 相似文献
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Wang YL Li XB Quan X Ma JX Zhang P Xu Y Zhang HC Guo JH 《Journal of cardiovascular electrophysiology》2007,18(5):459-464
Introduction: This study sought to investigate electrophysiologic characteristics and radiofrequency ablation (RFA) in patients with focal atrial tachycardia (AT) arising from the left atrial appendage (LAA).
Methods: This study included seven patients undergoing RFA with focal AT. Activation mapping was performed during tachycardia to identify an earlier activation in the left atria and the LAA. The atrial appendage angiography was performed to identify the origin in the LAA before and after RFA.
Results: AT occurred spontaneously or was induced by isoproterenol infusion rather than programmed extrastimulation and burst atrial pacing in any patient. The tachycardia demonstrated a characteristic P-wave morphology and endocardial activation pattern. The P wave was highly positive in inferior leads in all patients. Lead V1 showed upright or biphasic (±) component in all patients. Lead V2 –V6 showed an isoelectric component in five patients or an upright component with low amplitude (<0.1 mV) in two patients. Earliest endocardial activity occurred at the distal coronary sinus (CS) ahead of P wave in all seven patients. Mean tachycardia cycle length was 381 ± 34 msec and the earliest endocardial activation at the successful RFA site occurred 42.3 ± 9.6 msec before the onset of P wave. RFA was acutely successful in all seven patients. Long-term success was achieved in seven of the seven over a mean follow-up of 24 ± 5 months.
Conclusions: The LAA is an uncommon site of origin for focal AT (3%). There were consistent P-wave morphology and endocardial activation associated with this type of AT. The LAA focal ablation is safe and effective. Long-term success was achieved with focal ablation in all patients. 相似文献
Methods: This study included seven patients undergoing RFA with focal AT. Activation mapping was performed during tachycardia to identify an earlier activation in the left atria and the LAA. The atrial appendage angiography was performed to identify the origin in the LAA before and after RFA.
Results: AT occurred spontaneously or was induced by isoproterenol infusion rather than programmed extrastimulation and burst atrial pacing in any patient. The tachycardia demonstrated a characteristic P-wave morphology and endocardial activation pattern. The P wave was highly positive in inferior leads in all patients. Lead V
Conclusions: The LAA is an uncommon site of origin for focal AT (3%). There were consistent P-wave morphology and endocardial activation associated with this type of AT. The LAA focal ablation is safe and effective. Long-term success was achieved with focal ablation in all patients. 相似文献
19.
肺静脉隔离是心房颤动(房颤)导管消融的基石,对于阵发性房颤有良好效果,但在持续性房颤中的效果则不尽人意.肺静脉隔离以外的辅助消融策略有助于提高持续性房颤的手术成功率.左心耳不仅是心腔内血栓的常见起源,还是导致快速性房性心律失常发生或维持的因素,因而左心耳电隔离成为持续性房颤辅助消融策略之一,研究表明其可能有助于提高持续... 相似文献