Evaluation of stroke incidence with duty‐cycled multielectrode‐phased radiofrequency ablation of persistent atrial fibrillation results of the VICTORY AF Study

2020 ◽  
Vol 31 (6) ◽  
pp. 1289-1297
Author(s):  
John Hummel ◽  
Atul Verma ◽  
Hugh Calkins ◽  
Lee H. Schwamm ◽  
Daryl Gress ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Persistent Atrial Fibrillation ◽  
Stroke Incidence ◽  
Phased Radiofrequency

Treatment of persistent atrial fibrillation using phased radiofrequency ablation technology

2011 ◽  
Vol 9 (8) ◽  
pp. 1041-1049 ◽  
Author(s):  
Thomas Deneke ◽  
Andreas Mügge ◽  
Osman Balta ◽  
Marc Horlitz ◽  
Peter H Grewe ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Persistent Atrial Fibrillation ◽  
Phased Radiofrequency

Simultaneous Catheter and Epicardial Ablations Enable a Comprehensive Atrial Fibrillation Procedure

2011 ◽  
Vol 6 (4) ◽  
pp. 243-247 ◽  
Author(s):  
Andy C. Kiser ◽  
Mark D. Landers ◽  
Ker Boyce ◽  
Matjaž šinkovec ◽  
Andrej Pernat ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Sinus Rhythm ◽  
Pulmonary Veins ◽  
Persistent Atrial Fibrillation ◽  
Chronic Atrial Fibrillation ◽  
Lesion Pattern ◽  
Atrial Size ◽  
Cardiac Surgeon ◽  
Successful Collaboration

Objective Transmural and contiguous ablations and a comprehensive lesion pattern are difficult to create from the surface of a beating heart but are critical to the successful treatment of persistent, isolated atrial fibrillation. A codisciplinary simultaneous epicardial (surgical) and endocardial (catheter) procedure (Convergent procedure) addresses these issues. Methods Patients with symptomatic atrial fibrillation who failed medical treatment were evaluated. Using only pericardioscopy, the surgeon performed near-complete epicardial isolation of the pulmonary veins and a “box” lesion on the posterior left atrium using unipolar radiofrequency ablation. Simultaneous endocardial catheter radiofrequency ablation completed pulmonary vein isolation, performed a mitral annular and cavotricuspid isthmus line of block, and debulked the coronary sinus. Twelve-month results for the Convergent procedure were compared with 12-month results for concomitant and pericardioscopic (stand-alone transdiaphragmatic/thoracoscopic) atrial fibrillation procedures using unipolar radiofrequency ablation. Results Sixty-five patients underwent the Convergent procedure (mean age, 62 y; mean body surface area, 2.17 m2; mean atrial fibrillation duration, 4.8 y; mean left atrial size, 5.2 cm). Ninety-two percent were in persistent or long-standing persistent atrial fibrillation. At 12 months, evaluation with 24-hour Holter monitors found 82% of patients in sinus rhythm, while only 47% of pericardioscopic and 77% of concomitant patients treated with unipolar radiofrequency ablation were in sinus rhythm. Conclusions Simultaneous epicardial and endocardial ablation improves outcomes for patients with persistent or longstanding persistent atrial fibrillation. This successful collaboration between cardiac surgeon and electrophysiologist is an important treatment option for patients with large left atriums and chronic atrial fibrillation.

scholarly journals EFFICACY OF A NOVEL DUTY-CYCLED PHASED RADIOFREQUENCY ABLATION SYSTEM TO TREAT PATIENTS WITH ATRIAL FIBRILLATION

2011 ◽  
Vol 57 (14) ◽  
pp. E21
Author(s):  
Thomas Deneke ◽  
Osman Balta ◽  
Helge Anders ◽  
Marcus Päsler ◽  
Katrin Bünz ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Phased Radiofrequency

scholarly journals Epicardial Unipolar Lead Loss of Ventricular Capture during Radiofrequency Ablation of Atrial Fibrillation

2020 ◽  
Vol 2020 ◽  
pp. 1-3
Author(s):  
Daniel J. Chu ◽  
Wilson W. Lam
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Pulmonary Vein ◽  
Case History ◽  
Pulse Generator ◽  
Persistent Atrial Fibrillation ◽  
Dual Chamber ◽  
Dual Chamber Pacemaker ◽  
Cellular Changes ◽  
Unipolar Lead

Introduction. Abnormal pacemaker behavior can occur during radiofrequency ablation. The behaviors are varied and include loss of capture. The mechanisms in this context have not been well described in the literature. We describe a case of epicardial unipolar lead loss of ventricular capture during pulmonary vein isolation. Case History. A 48-year-old man with an epicardial dual chamber pacemaker and persistent atrial fibrillation presented for radiofrequency ablation (RFA) of his abnormal rhythm. During RFA, intermittent loss of ventricular capture was witnessed. Review of the device settings prior to and after the procedure showed an increase in ventricular threshold after the procedure. Loss of capture was shown to be dependent on location and RF energy delivered. It was independent of QTc and independent of local cellular changes that would increase threshold. Conclusion. We hypothesize the mechanism of loss of ventricular capture in this patient with an epicardial pacemaker with unipolar leads is related to intermittent shunt of voltage from the pulse generator to the grounding pad rather than the unipolar lead.

scholarly journals Predictors of recurrence following radiofrequency ablation for persistent atrial fibrillation

EP Europace ◽  
2010 ◽  
Vol 13 (3) ◽  
pp. 355-361 ◽  
Author(s):  
J. W. McCready ◽  
T. Smedley ◽  
P. D. Lambiase ◽  
S. Y. Ahsan ◽  
O. R. Segal ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Persistent Atrial Fibrillation ◽  
Predictors Of Recurrence

scholarly journals 073_16387-H5 Role of Right Atrial for Effective Radiofrequency Ablation for Paroxysmal and Persistent Atrial Fibrillation

2017 ◽  
Vol 3 (10) ◽  
pp. S26
Author(s):  
E.A. Artyukhina ◽  
A.S.h. Revishvili ◽  
V.A. Vaskovsky ◽  
M.V. Yashkov
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Persistent Atrial Fibrillation ◽  
Right Atrial

Phased radiofrequency ablation (PVAC), for atrial fibrillation – Acute procedural results

2015 ◽  
Vol 24 ◽  
pp. S243
Author(s):  
B. Wilsmore ◽  
W. Ahmad ◽  
M. Sky ◽  
M. Barlow ◽  
J. Leitch
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Phased Radiofrequency
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