Dynamic Changes in Electrocardiogram Parameters After Epicardial Substrate Catheter Ablation of Brugada Syndrome
| Autor: | Keita Mamiya, Satoshi Yanagisawa, Aya Fujii, Yasuya Inden, Toshiro Tomomatsu, Shuro Riku, Koichi Furui, Rei Shibata, Kazumasa Suga, Hiroya Okamoto, Toyoaki Murohara, Toshifumi Nakagomi |
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| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment Catheter ablation 030204 cardiovascular system & hematology Electrocardiography 03 medical and health sciences 0302 clinical medicine Internal medicine Primary prevention medicine Humans 030212 general & internal medicine Brugada Syndrome Brugada syndrome business.industry General Medicine Ablation medicine.disease Defibrillators Implantable Icd implantation Shock (circulatory) Ventricular Fibrillation Ventricular fibrillation Catheter Ablation Cardiology medicine.symptom Icd shocks Cardiology and Cardiovascular Medicine business |
| Zdroj: | Circulation Journal. 85:1283-1293 |
| ISSN: | 1347-4820 1346-9843 |
| DOI: | 10.1253/circj.cj-20-1060 |
| Popis: | Background Catheter ablation (CA) is effective for recurrent episodes of ventricular fibrillation (VF) in Brugada syndrome (BrS). VF development in BrS is associated with several electrocardiogram (ECG) abnormalities. This study investigated changes in ECG parameters in high-risk BrS patients who underwent epicardial CA.Methods and Results:In all, 27 BrS patients were implanted with an implantable cardioverter-defibrillator (ICD). Patients were divided into 2 groups: (1) an ablation group (n=11) that underwent epicardial CA because of VF recurrence; and (2) a primary prevention (PP) group (n=16) with ICD implantation only. ECG parameters were evaluated before and 12 months after CA and compared with ECG parameters in the PP group. The T wave peak-to-end interval was significantly longer and the number of abnormal spikes in leads V1-V3 at the second, third, and fourth intercostal spaces was greater in the ablation than PP group. After ablation, ST levels and the sum of abnormal spikes in leads V1-V3 were significantly decreased. The mean (±SD) number of ICD shocks decreased markedly during a mean follow-up period of 42.0 months (from 3.8±3.7 to 0.2±0.4/year). Four patients had an ICD shock following the ablation procedure. Greater reductions in ST-segment elevation and abnormal spikes were observed in the group without than with VF recurrence. Conclusions Improvements in surface ECG parameters appear to be associated with successful ablation in high-risk BrS patients. |
| Databáze: | OpenAIRE |
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