Unipolar electrogram‐based voltage mapping with far‐field cancellation to improve detection of abnormal atrial substrate during atrial fibrillation

2021 ◽  
Author(s):  
Don Ragot ◽  
Sachin Nayyar ◽  
Sophia Z. Massin ◽  
Andrew C. T. Ha ◽  
Sheldon M. Singh ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Far Field ◽  
Voltage Mapping ◽  
Unipolar Electrogram

scholarly journals B-PO04-079 HEAD-TO-HEAD COMPARISON OF ATRIAL CMR AND VOLTAGE MAPPING FOR PREDICTION CLINICAL OUTCOMES AFTER ATRIAL FIBRILLATION ABLATION

Heart Rhythm ◽  
2021 ◽  
Vol 18 (8) ◽  
pp. S311
Author(s):  
Iain Sim ◽  
Daniel O'Hare ◽  
Louisa O'Neill ◽  
John Whitaker ◽  
Irum Kotadia ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Clinical Outcomes ◽  
Atrial Fibrillation Ablation ◽  
Voltage Mapping

scholarly journals Voltage mapping as a method of left atrial fibrosis evaluation

2016 ◽  
Vol 20 (2) ◽  
pp. 111 ◽  
Author(s):  
O. V. Sapelnikov ◽  
Yu. A. Shuvalova ◽  
D. Yu. Cherkashin ◽  
A. A. Krupnov ◽  
A. S. Partigulova ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Large Scale ◽  
Atrial Fibrosis ◽  
Instrumental Data ◽  
Voltage Mapping ◽  
Special Software ◽  
Mechanisms Of Development ◽  
Left Atrial Fibrosis ◽  
And Control

<p><strong>Aim:</strong> This pilot study is designed to better understand the mechanisms of development and control of atrial fibrillation.<br /><strong>Methods:</strong> The correlation between fibrosis index (FI), which was calculated intraoperatively with special software, and clinical and instrumental data was analyzed. Also evaluated were FI values as compared to AF catheter ablation outcomes. <br /><strong>Results:</strong> Voltage mapping may be considered as a possible alternative to MRI examination and in some cases it is more informative. <br /><strong>Conclusion:</strong> It was found out that the preliminary results received are a good start for planning a large-scale study in this area related to assessment of the predicative and practical value of the fibrosis index.</p>

Abstract 15692: Voltage Mapping in Atrial Fibrillation vs Sinus Rhythm: Results From the Mavs Study

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Carola Gianni ◽  
Jerri A Cunningham ◽  
Sanghamitra Mohanty ◽  
CHINTAN TRIVEDI ◽  
Domenico G Della Rocca ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Sinus Rhythm ◽  
Low Voltage ◽  
Lateral Wall ◽  
Posterior Wall ◽  
Anterior Wall ◽  
Inferior Wall ◽  
Voltage Mapping ◽  
First Time ◽  
Mapping Catheter

Background: Left atrial (LA) scar can be identified with bipolar voltage mapping during sinus rhythm (SR). It is not clear whether the same voltage criteria can be applied during atrial fibrillation (AF). Objective: Aim of this study was to compare voltage maps performed in the same patient both in AF and SR. Methods: Voltage mapping was performed using a 10-pole circular mapping catheter in patients with non-paroxysmal AF undergoing first time RF ablation. For descriptive purposes, the LA was divided in 6 regions: septum, posterior wall (PW), inferior wall (IW), lateral wall, anterior wall, and roof. The threshold for low voltage was <0.5 mV (with a color range setting 0.2-0.5 mV). Mild “scar” was defined as an area low voltage 5-20%, moderate 20-35% and severe as >35%. Results: 16 patients (62% persistent AF, 38% longstanding persistent AF) were included in the study. The map density was comparable during AF and SR (mean points per map 551 vs 547, paired t test P = NS). 2 patients displayed normal voltage during both AF and SR. 14 patients showed areas of low voltage during AF, which were still present during SR in 8. All patients with mild “scarring” during AF (n = 4), showed normal voltage during SR. Of the 7 patients with moderate “scarring”, 2 patients showed normal voltage during SR, while in the remaining 5 “scarring” was only mild during SR. 3 patients showed extensive “scarring” during AF, which was only moderate during SR. During AF, areas of low voltage were more commonly observed in the PW (12/14) followed by the IW (6/14) and antero-septum (4/14); while in SR, in the antero-septum (4/8), PW (3/8) and IW (3/8). Interestingly, in all patients both the PW/IW and (less dramatically) the antero-septum showed more “scarring” during AF as compared to SR. Conclusion: Areas of low voltage are more severe and diffuse during AF when compared to SR. When areas of low voltage are detected during AF, they are more commonly seen in the PW, IW and antero-septal areas.

Left atrial voltage mapping using a new impedance-based algorithm in patients with paroxysmal atrial fibrillation

2018 ◽  
Vol 41 (11) ◽  
pp. 1447-1453 ◽  
Author(s):  
Dimitrios Asvestas ◽  
Konstantinos Vlachos ◽  
George Bazoukis ◽  
Claire A. Martin ◽  
Konstantinos P. Letsas ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Paroxysmal Atrial Fibrillation ◽  
Left Atrial ◽  
Voltage Mapping

Catheter Ablation of Low-Voltage Areas for Persistent Atrial Fibrillation: Procedural Outcomes Using High-Density Voltage Mapping

2020 ◽  
Vol 36 (12) ◽  
pp. 1956-1964 ◽  
Author(s):  
Pablo B. Nery ◽  
Wael Alqarawi ◽  
Girish M. Nair ◽  
Mouhannad M. Sadek ◽  
Calum J. Redpath ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Low Voltage ◽  
Persistent Atrial Fibrillation ◽  
High Density ◽  
Voltage Mapping ◽  
Procedural Outcomes

Voltage mapping for delineating inexcitable dense scar in patients undergoing atrial fibrillation ablation: A new end point for enhancing pulmonary vein isolation

Heart Rhythm ◽  
2014 ◽  
Vol 11 (11) ◽  
pp. 1904-1911 ◽  
Author(s):  
Fabien Squara ◽  
David S. Frankel ◽  
Robert Schaller ◽  
Suraj Kapa ◽  
William W. Chik ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Pulmonary Vein ◽  
Pulmonary Vein Isolation ◽  
Atrial Fibrillation Ablation ◽  
End Point ◽  
Voltage Mapping

scholarly journals Cryoballoon pulmonary vein isolation and voltage mapping for symptomatic atrial fibrillation 9 months after Watchman device implantation

2018 ◽  
Vol 4 (1) ◽  
pp. 6-9 ◽  
Author(s):  
Henry D. Huang ◽  
Viren M. Patel ◽  
Parikshit S. Sharma ◽  
Zenith Jameria ◽  
Sorin Lazar ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Pulmonary Vein ◽  
Pulmonary Vein Isolation ◽  
Device Implantation ◽  
Voltage Mapping ◽  
Watchman Device
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