Purpose The purposes of the study were to evaluate and char- ping can help identify maximum voltage areas within the isth- acterize the cavotricuspid isthmus using multipoint high den- mus and when ablated can create bidirectional block with sity voltage gradient mapping (HD-VGM) to see if this would decreased ablation times and length of the lesion. improve on current ablation techniques compared to standard . . cavotricuspid isthmus ablation techniques. Keywords Typicalatrialflutter Radiofrequency ablation . . Methods Group 1, 25 patients who underwent ablation using 3D anatomic mapping High density mapping Voltage standard methods of 3D mapping and ablation, was compared gradient mapping Catheter ablation to group 2, 33 patients undergoing ablation using HD-VGM and ablation. Using this method, we are able to identify the maximum voltage areas within isthmus and target it for abla- Abbreviations tion. Total procedure times, ablation times and number of AF Atrial fibrillation lesions, distance ablated, and fluoroscopy times were HD-VGM High density activation sequence mapping compared. with voltage gradient mapping Results Fifty-eight patients were included in this study. AFL Typical atrial flutter Compared to group 1, in group 2, HD-VGM decreased the LA Left atrium total ablation time 18.2 ± 9.2 vs 8.3
Journal of Interventional Cardiac Electrophysiology – Springer Journals
Published: Jul 22, 2017
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