Correlation of atrial electrocardiographic amplitude with radiofrequency energy required to ablate cavotricuspid isthmus-dependent atrial flutter.
Correlation of atrial electrocardiographic amplitude with radiofrequency energy required to ablate cavotricuspid isthmus-dependent atrial flutter.
复制标题
心房心电图振幅与消融三尖瓣峡部依赖性心房扑动所需的射频能量的相关性。
DOI：
10.1016/j.hrthm.2004.12.018
复制
发表时间：
2005
期刊：
影响因子：
5.5
通讯作者：
M. Haïssaguerre
中科院分区：
文献类型：
--
作者：
M. Rotter;C. Scavée;F. Sacher;P. Sanders;Y. Takahashi;L. Hsu;T. Rostock;M. Hocini;P. Jaïs;J. Clémenty;M. Haïssaguerre
本研究的目的是评估普通心房扑动（AFL）的心房ECG幅度与实现三尖瓣环峡部阻滞所需的射频（RF）能量之间的可能相关性。这种变化归因于三尖瓣环峡部的解剖结构。心房心电图振幅可以是心房解剖变异的标志，因此可能与RF持续时间需要实现三尖瓣环峡部block.METHODSSeventy连续患者进行了前瞻性研究。通过使用8 mm头端电极导管在下三尖瓣环和下腔静脉之间建立一条阻断线，进行三尖瓣环峡部消融。如果需要超过20分钟的射频时间来实现传导阻滞，则将导管更换为灌注头端导管。在导联II、III、aVF和aVL中评估心房ECG振幅。在所有患者中，总共输送了14 ± 11分钟的射频能量以实现阻滞; 12例患者（8%）需要超过20分钟。心房心电图振幅与累积射频能量高度相关（II导联F波和P波：r = 0.703和r = 0.737，P <0.001）。Ⅱ导联P波振幅<0.2mV和/或扑动波振幅<0.35mV对<20 min射频消融有较高的阴性预测值（分别为96%和89%）。心房ECG振幅可能是峡部解剖特征的替代标记。这些发现可能会影响三尖瓣环峡部消融导管的选择。
OBJECTIVESThe purpose of this study was to evaluate a possible correlation between atrial ECG amplitude in common atrial flutter (AFL) and radiofrequency (RF) energy required to achieve cavotricuspid isthmus block.BACKGROUNDThe amount of RF delivery required for ablation of typical AFL is variable. This variation has been attributed to the cavotricuspid isthmus anatomy. Atrial ECG amplitude can be a marker of atrial anatomic variations and therefore may correlate with RF duration required to achieve cavotricuspid isthmus block.METHODSSeventy consecutive patients were prospectively studied. Ablation of the cavotricuspid isthmus was performed by creating a line of block between the inferior tricuspid annulus and the inferior caval vein using 8-mm-tip electrode catheters. If more than 20 minutes of RF time was required to achieve conduction block, the catheter was changed to an irrigated-tip catheter. Atrial ECG amplitude was assessed in leads II, III, aVF, and aVL.RESULTSA total of 14 ± 11 minutes of RF energy was delivered to achieve block in all patients; 12 patients (8%) required more than 20 minutes. Atrial ECG amplitude showed highly significant correlations with cumulative RF energy (F and P waves in lead II: r = 0.703 and r = 0.737, P < .001). P-wave amplitude <0.2 mV and/or flutter wave amplitude <0.35 mV in lead II have a high negative predictive value to predict <20 min RF delivery (96% and 89% respectively).CONCLUSIONSA significant correlation exists between atrial ECG amplitude and amount of RF required to ablate typical AFL. Atrial ECG amplitude may be a surrogate marker of characteristics of isthmus anatomy. These findings may influence the choice of catheter used for cavotricuspid isthmus ablation.
室间隔缺损后心房扑动一例被认为是下环折返
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
福原淳示、住友直方;他
通讯作者：
他