The low acute effectiveness of a high-power short duration radiofrequency current application technique in pulmonary vein isolation for atrial fibrillation
| Autor: | Lars S. Maier, Sabine Fredersdorf, F Poschenrieder, Manuel Kaufmann, Ekrem Ücer, Carsten Jungbauer, Christian Hauck |
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| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Adenosine medicine.medical_treatment Provocation test 030204 cardiovascular system & hematology Left sided Pulmonary vein 03 medical and health sciences 0302 clinical medicine Recurrence Internal medicine Atrial Fibrillation medicine Humans Short duration Procedure time business.industry Atrial fibrillation General Medicine Ablation medicine.disease Catheter Treatment Outcome Pulmonary Veins Catheter Ablation Cardiology Cardiology and Cardiovascular Medicine business |
| Zdroj: | Cardiology Journal. 28:663-670 |
| ISSN: | 1898-018X 1897-5593 |
| DOI: | 10.5603/cj.a2020.0033 |
| Popis: | Background: Application of high power radiofrequency (RF) energy for a short duration (HPSD) to isolate pulmonary vein (PV) is an emerging technique. But power and duration settings are very different across different centers. Moreover, despite encouraging preclinical and clinical data, studies measuring acute effectiveness of various HPSD settings are limited. Methods: Twenty-five consecutive patients with symptomatic atrial fibrillation (AF) were treated with pulmonary vein isolation (PVI) using HPSD. PVI was performed with a contact force catheter (Thermocool SF Smart-Touch) and Carto 3 System. The following parameters were used: energy output 50 W, target temperature 43°C, irrigation 15 mL/min, targeted contact force of > 10 g. RF energy was applied for 6–10 s. Required minimal interlesion distance was 4 mm. Twenty minutes after each successful PVI adenosine provocation test (APT) was performed by administrating 18 mg adenosine to unmask dormant PV conduction. Results: All PVs (100 PVs) were successfully isolated. RF lesions needed per patient were 131 ± 41, the average duration for each RF application was 8.1 ± 1.7 s. Procedure time was 138 ± 21 min and average of total RF energy duration was 16.3 ± 5.2 min and average amount of RF energy was 48209 ± 12808 W. APT application time after PVI was 31.1 ± 8.3 min for the left sided PVs and 22.2 ± 4.6 min (p = 0.005) for the right sided PVs. APT was transiently positive in 18 PVs (18%) in 8 (32%) patients. Conclusions: Pulmonary vein isolation with high power for 6–10 s is feasible and shortens the procedure and ablation duration. However, acute effectiveness of the HPSD seems to be lower than expected. Further studies combining other ablation parameters are needed to improve this promising technique. |
| Databáze: | OpenAIRE |
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