Linear ablation lesions for control of unmappable ventricular tachycardia in patients with ischemic and nonischemic cardiomyopathy
Linear ablation lesions for control of unmappable ventricular tachycardia in patients with ischemic and nonischemic cardiomyopathy
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DOI：
10.1161/01.cir.101.11.1288
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发表时间：
2000-03-21
期刊：
影响因子：
37.8
通讯作者：
Zado, E
中科院分区：
文献类型：
--
作者：
Marchlinski, FE;Callans, DJ;Zado, E
背景：如果没有可诱导的、稳定的室性心动过速（VT），常规的激活映射是困难的。方法与结果：对16例药物难治性、不均匀性、无法定位的室性心动过速进行评价，其中缺血性9例，非缺血性7例。所有患者都有植入式除颤器，并且在治疗前一个月内经历了6至55次VT发作。患者在基线节律期间接受双极导管测绘。3例患者采用x线透视，13例患者采用磁测系统（CARTO）对心电图幅值异常的心内膜数量进行了估计。对于磁成像，正常的心内膜以振幅>1.5 mV定义；这项测量是基于6名非结构性心脏病患者的窦性心律图。射频点病变从具有电压振幅的“致密疤痕”呈线性延伸
Background-Conventional activation mapping is difficult without inducible, stable ventricular tachycardia (VT).Methods and Results-We evaluated 16 patients with drug refractory, unimorphic, unmappable VT. Nine patients had ischemic and 7 had nonischemic cardiomyopathy. All patients had implantable defibrillators and had experienced 6 to 55 VT episodes during the month before treatment. Patients underwent bipolar catheter mapping during baseline rhythm. The amount of endocardium with an abnormal electrogram amplitude was estimated using fluoroscopy in 3 patients and a magnetic mapping system (CARTO) in 13 patients. For the magnetic mapping, normal endocardium was defined by an amplitude >1.5 mV; this measurement was based on sinus rhythm maps in 6 patients who did not have structural heart disease. Radiofrequency point lesions extended linearly from the "dense scar," which had a voltage amplitude