A new method to evaluate linear block at the left atrial roof: is it reliable without pacing?

Journal of Cardiovascular Electrophysiology
Cai-Hua SangChangsheng Ma

Abstract

The present study aimed to evaluate a new method for validation of complete linear block at the left atrial (LA) roof. Linear lesions at the LA roof have been reported to improve the success rate of catheter ablation of atrial fibrillation (AF). Complete linear block at the LA roof was evaluated in 31 patients after complete isolation of pulmonary vein antrum (PVA) using a simple method. We hypothesized that complete linear block of the LA roof could be confirmed during sinus rhythm if (1) a continuous line of double potentials could be recorded at the LA roof, and (2) the activation sequence along the posterior wall changed to caudocranial. The results of this method were compared with standard pacing techniques. Thirty-nine lines were assessed using this method: 8 before and 31 after achievement of complete conduction block. After validation of complete linear block at the LA roof, double potentials with a mean interpotential interval of 60 +/- 13 ms were recorded in 25 patients and electroanatomical mapping of the left atrium showed the activation sequence of posterior wall changed to caudocranial in all 31 patients during sinus rhythm. The sensitivity, specificity, positive and negative predictive values of this method for ...Continue Reading

References

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Citations

Apr 21, 2012·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Miki YokokawaAman Chugh
May 10, 2015·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Jian-Zeng DongChang-Sheng Ma
May 4, 2011·Pacing and Clinical Electrophysiology : PACE·Barbara NaegeliChristoph Scharf
Oct 16, 2015·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Arian SultanStephan Willems
Mar 27, 2015·Journal of Cardiovascular Electrophysiology·Martin HuemerLeif-Hendrik Boldt
Sep 7, 2014·Journal of the American Heart Association·Elena ArbeloLluís Mont
Jul 9, 2020·Pacing and Clinical Electrophysiology : PACE·Shangxin LuChangsheng Ma
Mar 19, 2021·Pacing and Clinical Electrophysiology : PACE·Zhuo LiangYongquan Wu

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