In paroxysmal AF, first-line catheter ablation vs. antiarrhythmic drugs reduces atrial arrhythmia recurrence

Author(s):  
Laura Rees Willett ◽  
Sarang Kim
2021 ◽  
Author(s):  
Mohit K. Turagam ◽  
Daniel Musikantow ◽  
William Whang ◽  
Jacob S. Koruth ◽  
Marc A. Miller ◽  
...  

2021 ◽  
Vol 77 (18) ◽  
pp. 384
Author(s):  
Rhanderson Cardoso ◽  
Gustavo B. Justino ◽  
Leonardo Knijnik ◽  
Leticia B.C. Soares ◽  
Luana M.F. Sanchez ◽  
...  

EP Europace ◽  
2021 ◽  
Vol 23 (Supplement_3) ◽  
Author(s):  
M Casula ◽  
L Pignalosa ◽  
F Fortuni ◽  
E Baldi ◽  
A Sanzo ◽  
...  

Abstract Funding Acknowledgements Type of funding sources: None. Background In patients with symptomatic atrial fibrillation (AF), current international guidelines favor the use of antiarrhythmic drugs (AAD) as initial therapy for the maintenance of sinus rhythm. Previous studies have compared catheter ablation for pulmonary vein isolation versus AAD in this clinical scenario but the best first-line therapeutic option in patients with symptomatic AF candidates for rhythm control strategy remains an open issue. Aim To compare efficacy and safety of catheter ablation versus AAD as first-line therapy in patients with symptomatic AF. Methods We searched electronic databases for randomized controlled trials (RCTs) comparing catheter ablation versus AAD as first-line therapy for symptomatic AF. The primary efficacy outcome was any recurrence of atrial tachyarrhythmias. The secondary efficacy outcomes were symptomatic arrhythmic recurrences. The safety outcomes were serious adverse events related to the therapeutic regimen. Outcome events were defined according to the definition used in each original study. The effect size was estimated using a random-effect model as risk ratio (RR) and relative 95% confidence interval (CI) with the statistical software Review Manager 5.3. Results Five RCTs counting 997 patients (503 treated with catheter ablation and 494 with AAD) were included in the analysis. Mean age was 57 ± 3 years, 30% were female. Mean left ventricle ejection fraction was 60%±4% and mean left atrial diameter was 40 mm ± 1 mm. At baseline 52% of patients were treated with a beta-blocker and 11% with a calcium channel blocker. In the catheter ablation group 258 patients (51%) underwent cryoablation and 245 (49%) radiofrequency ablation. Median follow-up was 12 months (IQR 12-24 months). Patients treated with catheter ablation had statistically significant lower risk of atrial tachyarrhythmias recurrences (RR 0.59; 95%CI 0.45-0.76; p < 0.0001 – Figure A) and of symptomatic arrhythmia recurrences (RR 0.45; 95%CI 0.25-0.80; p = 0.007 – Figure B) compared with those treated with AAD. The risk of serious adverse events related to the therapeutic regimen did not differ significantly between patients undergoing catheter ablations and those treated with AAD (RR 0.85; 95%CI 0.45-1.59 – Figure C). Conclusions In patients with symptomatic AF, catheter ablation as first-line therapy is associated with a reduced risk of atrial tachyarrhythmias recurrences compared with AAD, without statistically significant differences in the risk of serious adverse events related to the treatment. Abstract Figure.


2010 ◽  
Vol 6 (3) ◽  
pp. 60
Author(s):  
Richard Schilling ◽  

Atrial fibrillation (AF) is linked to an increased risk of adverse cardiovascular events. While rhythm control with antiarrhythmic drugs (AADs) is a common strategy for managing patients with AF, catheter ablation may be a more efficacious and safer alternative to AADs for sinus rhythm control. Conventional catheter ablation has been associated with challenges during the arrhythmia mapping and ablation stages; however, the introduction of two remote catheter navigation systems (a robotic and a magnetic navigation system) may potentially overcome these challenges. Initial clinical experience with the robotic navigation system suggests that it offers similar procedural times, efficacy and safety to conventional manual ablation. Furthermore, it has been associated with reduced fluoroscopy exposure to the patient and the operator as well as a shorter fluoroscopy time compared with conventional catheter ablation. In the future, the remote navigation systems may become routinely used for complex catheter ablation procedures.


Author(s):  
Johannes Steinfurt ◽  
Babak Nazer ◽  
Martin Aguilar ◽  
Joshua Moss ◽  
Satoshi Higuchi ◽  
...  

Abstract Background The short-coupled variant of torsade de pointes (sc-TdP) is a malignant arrhythmia that frequently presents with ventricular fibrillation (VF) electrical storm. Verapamil is considered the first-line therapy of sc-TdP while catheter ablation is not widely adopted. The aim of this study was to determine the origin of sc-TdP and to assess the outcome of catheter ablation using 3D-mapping. Methods and results We retrospectively analyzed five patients with sc-TdP who underwent 3D-mapping and ablation of sc-TdP at five different institutions. Four patients initially presented with sudden cardiac arrest, one patient experienced recurrent syncope as the first manifestation. All patients demonstrated a monomorphic premature ventricular contraction (PVC) with late transition left bundle branch block pattern, superior axis, and a coupling interval of less than 300 ms. triggering recurrent TdP and VF. In four patients, the culprit PVC was mapped to the free wall insertion of the moderator band (MB) with a preceding Purkinje potential in two patients. Catheter ablation using 3D-mapping and intracardiac echocardiography eliminated sc-TdP in all patients, with no recurrence at mean 2.7 years (range 6 months to 8 years) of follow-up. Conclusion 3D-mapping and intracardiac echocardiography demonstrate that sc-TdP predominantly originates from the MB free wall insertion and its Purkinje network. Catheter ablation of the culprit PVC at the MB free wall junction leads to excellent short- and long-term results and should be considered as first-line therapy in recurrent sc-TdP or electrical storm. Graphic abstract


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