Long-term results of minimally invasive epicardial video-assisted radiofrequency isolation of pulmonary veins in isolated atrial fibrillation
https://doi.org/10.51922/2616-633X.2022.6.1.1459
Abstract
Aim. To analyze long-term results of the use of minimally invasive epicardial video-assisted radiofrequency ablation (RFA) of the pulmonary veins (PV) in patients with various forms of isolated atrial fibrillation (AF).
Materials and methods. Since February 2011 to December 2014, 22 patients (male/female – 21/1) with paroxysmal / persistent / long-standing persistent idiopathic form of AF were operated on the basis of the Republican Scientific and Practical Center “Cardiology”, 7 (31.8%) / 9 (41%) / 6 (27.2%) cases respectively. Mean age was 48.33 ± 9.37 (31–66) years old. The average duration of the history of AF before the operation was 58.6 ± 32.5 months. RFA was performed through a bilateral mini-thoracotomy approach using video endoscopy with the application of bipolar irrigated Gemini X ablative clamp electrodes. All patients underwent bilateral antral RFA isolation of the PVs. In 100% of patients it was possible to achieve a conduction block from the PV collectors.
Results. During the hospital period, there were not no lethal cases, conversions to sternotomy, and neurological complications. The long-term period was studied in 100% of patients, the average follow-up period was 7.4+0.5 years. The final rhythm was assessed using Holter monitoring in 3, 6, and 12 months after surgery, then annually. In 6 (28%) cases in patients with initial non-paroxysmal AF, endocardial RFA of the isthmus of the right atrium or PV orifices was performed at different times after surgery due to the presence of atrial flutter (4/19%) or AF (2/9.5%). Implantation of the pacemaker was required in 2 cases (9.0%).
The effectiveness of bipolar antral RFA isolation of the PV using the Gemini X device, depending on the initial form of AF in the long-term period: paroxysmal – 100%, persistent – 66.7%, long-term persistent – 33.3%.
Conclusion. Epicardial minimally invasive bipolar antral PV isolation is a highly effective treatment for paroxysmal AF. In non-paroxysmal forms of AF, it is necessary to expand isolation of arrhythmogenic zones in the atria.
About the Authors
A. Zhyhalkovich
Republican Scientific and Practical Center “Cardiology”
Belarus
Belarus
Minsk
R. Zhmailik
Republican Scientific and Practical Center “Cardiology”
Belarus
Belarus
Minsk
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Review
For citations:
Zhyhalkovich A., Zhmailik R. Long-term results of minimally invasive epicardial video-assisted radiofrequency isolation of pulmonary veins in isolated atrial fibrillation. Emergency Cardiology and Cardiovascular Risks journal. 2022;6(1):1459-1465. (In Russ.) https://doi.org/10.51922/2616-633X.2022.6.1.1459
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